EN： The subordinating conjunction 'because' is used to introduce a subordinate clause (adverbial clause of reason) that explains why the action in the main clause happened. In this sentence, 'I joined the club' is the main clause, and 'because I want to help' is the subordinate clause.
中文： 从属连接词“because”（因为）用来引导状语从句（原因从句），解释主要从句动作发生的原因。在本句中，“I joined the club”是主要从句，而“because I want to help”则是从属从句。
She stayed at home because it was raining.
她待在家里是因为下雨了。
EN： The verb 'want' is followed by a to-infinitive ('to help') to express a desire or intention to perform an action. This is a common pattern where the infinitive acts as the direct object of the verb.
中文： 动词“want”（想要）后面接不定式（to + 原形动词，如“to help”），用来表示想要或企图进行某个动作。这是一种常见的句型，不定式在此作为动词的直接宾语。
They want to learn English.
他们想要学习英文。
EN： In English-speaking countries, joining extracurricular clubs or volunteering is highly valued as a way to build community, develop social skills, and show civic responsibility. Expressing a simple desire to 'help' is seen as a positive and genuine motivation.
中文： 在英語系國家中，加入課外社團或參與志願服務被視為建立社區連結、培養社交技巧及展現公民責任的重要方式。表達想要「提供幫助」的單純動機，會被視為非常積極且真誠的態度。
EN： The subordinating conjunction 'although' is used to introduce a concession clause, showing a contrast between two ideas. In English, 'although' and 'but' cannot be used in the same sentence to connect the clauses, unlike in Chinese where '雖然' (although) and '但是' (but) often appear together.
中文： 从属连接词“although”（虽然）用于引导让步状语从句，表示两个想法之间的对比。在英语中，“although”和“but”（但是）不能同时出现在同一个句子中来连接从句，这与中文里“虽然”和“但是”经常成对出现的习惯不同。
Although it was raining, they played soccer.
虽然下着雨，他们还是踢了足球。
EN： The word 'tiring' is a participial adjective (present participle) used to describe a situation or thing that causes fatigue. In contrast, past participle adjectives ending in '-ed' (like 'tired') describe how a person feels.
中文： 单词“tiring”是分词形容词（现在分词），用来描述令人感到疲累的事物或情境。相比之下，以“-ed”结尾的过去分词形容词（如“tired”）则用来描述人的主观感受。
The long hike was very tiring.
那次长途徒步非常令人疲惫。
EN： In English-speaking cultures, community service and volunteering (like cleaning local parks) are highly valued and often integrated into school curricula or community life from a young age. Expressing a sense of accomplishment despite physical fatigue is a common narrative in volunteer experiences.
中文： 在英語系國家中，社區服務和志願服務（例如清理當地公園）受到高度重視，且通常從小就融入學校課程或社區生活中。在志工經驗中，儘管身體疲憊仍表達出成就感，是一種非常常見的敘事方式。
EN： The coordinating conjunction 'so' is used to connect two independent clauses, where the second clause represents the result or consequence of the first clause. A comma is typically placed before 'so' when it connects two complete sentences.
中文： 并列连词“so”（所以）用于连接两个独立分句，其中第二个分句表示第一个分句的结果或影响。当“so”连接两个完整的句子时，通常会在前面加上逗号。
It started to rain, so we stayed indoors.
开始下雨了，所以我们待在室内。
EN： The simple past tense (e.g., 'collected', 'donated') is used to describe completed actions that occurred at a specific time in the past.
中文： 一般过去时（例如“collected”、“donated”）用于描述在过去特定时间已经完成的动作或状态。
They visited the museum yesterday.
他们昨天参观了博物馆。
EN： In English-speaking countries, donating used books to local libraries, charity shops, or community centers is a very common civic activity. It promotes recycling, literacy, and community support.
中文： 在英語系國家，將二手書捐贈給當地圖書館、慈善商店或社區中心是非常普遍的公民活動。這不僅能促進資源循環利用，還能推廣閱讀並支持社區發展。
EN： The verb 'like' can be followed by a gerund (verb-ing) to express a general preference or hobby. 'Volunteering' acts as the noun object of the verb 'like'.
中文： 动词“like”（喜欢）后面可以接动名词（V-ing）来表示一般的喜好或兴趣。在这里，“volunteering”作为动词“like”的宾语。
She likes swimming in the ocean.
她喜欢在海里游泳。
EN： The coordinating conjunction 'but' is used to connect two independent clauses that show a contrast. A comma is typically placed before 'but' when it connects two complete sentences.
中文： 并列连词“but”（但是）用于连接两个表示对比的独立分句。当它连接两个完整的句子时，通常会在“but”前面加上逗号。
I want to go to the party, but I have to study.
我想去参加派对，但我必须读书。
EN： In English-speaking cultures, volunteering is highly valued and often seen as a standard civic duty or a way to build one's resume. However, people also openly discuss the balance between wanting to help and managing their personal time, as reflected in this realistic statement.
中文： 在英語系國家中，志願服務（當志工）受到高度重視，通常被視為一種公民義務或累積履歷的方式。然而，人們也會坦率地討論「想幫忙」與「管理個人時間」之間的平衡，這句話正反映了這種務實的態度。
EN： The conjunction 'because' is used to introduce a subordinate adverbial clause of reason. It explains the cause or motive behind the action in the main clause ('We helped'). In English, adverbial clauses of reason can be placed after the main clause without a comma.
中文： 从属连接词“because”（因为）用来引导表示原因的状语从句，解释主句动作（We helped）背后的因由或动机。在英语中，当原因状语从句置于主句之后时，通常不需要加逗号。
She stayed at home because it was raining.
她待在家里，因为下雨了。
EN： Simple Past Tense (helped, needed): Used to describe completed actions or states in the past. Since this sentence refers to a specific past event (the community service project), both the main verb 'helped' and the subordinate verb 'needed' are in the past tense to maintain tense consistency.
中文： 一般过去时（helped, needed）：用于描述过去已经完成的动作或状态。由于本句指的是过去发生的特定事件（社区服务计划），因此主句动词“helped”与从句动词“needed”皆使用过去式，以保持时态的一致性。
EN： In English-speaking cultures, community service and civic duty are highly valued. Expressing that 'the city needed us' reflects a strong sense of civic responsibility and community belonging, where citizens view themselves as active contributors to the local municipality's well-being.
中文： 在英語系國家中，社區服務與公民義務備受重視。句中提到「城市需要我們」，反映出強烈的公民責任感與社區歸屬感，市民通常將自己視為維護地方福祉的積極參與者。
EN： The conjunction 'although' is used to introduce a subordinate clause of concession, showing a contrast with the main clause. In English, we do not use 'but' in the main clause when 'although' is used.
中文： 从属连接词“although”（虽然）用来引导表示让步的状语从句，与主要从句形成对比。在英语语法中，当句子开头使用了 although，后面的主要从句就不能再使用连接词 but。
Although the test was difficult, she passed it.
虽然考试很难，她还是通过了。
EN： The verb 'keep' followed by a gerund (verb-ing) means to continue doing an action without stopping.
中文： 动词“keep”后面接动名词（V-ing）时，表示“持续、不停地”做某个动作。
They kept talking even after the movie started.
甚至在电影开始后，他们还是一直讲话。
EN： In many English-speaking cultures, volunteering and community service are highly valued. Rain or bad weather is often seen as a minor obstacle that shouldn't stop community efforts, reflecting a strong sense of commitment and resilience.
中文： 在許多英語系國家的文化中，志願服務與社區服務受到高度重視。下雨或惡劣天氣通常被視為不應阻礙社區服務的微小障礙，這反映出強烈的承諾感與韌性。
EN： The conjunction 'so that' is used to express purpose or intention. It connects a main clause (the action) with a subordinate clause (the goal or purpose). In B2 level contexts, it is often followed by a subject and a modal verb like 'can', 'could', 'may', or 'might', or a simple present/past tense verb to show a direct result.
中文： 连词“so that”（以便、为了）用于表示目的或意图。它将主句（行动）与从句（目标或目的）连接起来。在B2难度的语境中，其后通常接主语以及助动词（如can、could、may、might），或直接接一般现在时/过去时动词以表示直接结果。
She saves money so that she can buy a new laptop.
她存钱以便能买一台新笔记本电脑。
EN： The comparative adjective 'cleaner' is the comparative form of 'clean'. It is used to compare the state of the air in the future (after planting trees) with its current state.
中文： 比较级形容词“cleaner”是“clean”（干净的）的比较级形式。在这里用于将未来的空气状态（种树后）与现在的状态进行比较。
Regular exercise makes your heart stronger.
规律运动会让你的心脏更强壮。
EN： In many English-speaking countries, community-led environmental initiatives, such as tree planting or community gardening, are highly valued. Expressing the environmental purpose of an action using 'so that' reflects a common civic discourse around sustainability and collective responsibility.
中文： 在許多英語系國家，由社區主導的環保倡議（如植樹或社區園藝）受到高度重視。使用「so that」來表達某項行動的環保目的，反映了關於永續發展和集體責任的常見公民對話。
EN： The subordinating conjunction 'because' is used to introduce a clause of reason. It connects the main clause ('She smiled') with the subordinate clause ('she felt proud') to explain why the action in the main clause happened.
中文： 从属连接词“because”（因为）用于引导原因从句。它将主句（“She smiled”）与从属从句（“she felt proud”）连接起来，用以解释主句动作发生的原因。
He stayed home because it was raining.
他待在家里，因为下雨了。
EN： The verb 'feel' is a linking verb (copula) that is followed by an adjective ('proud') rather than an adverb, to describe the subject's state of mind or physical sensation.
中文： 动词“feel”（感到）是一个系动词（linking verb），后面接形容词（“proud”）而非副词，用来描述主语的心境或身体感受。
They felt happy after the game.
比赛结束后他们感到很快乐。
EN： The subordinating conjunction 'because' is used to introduce an adverbial clause of reason, explaining why the action in the main clause ('I joined') took place.
中文： 从属连接词“because”（因为）用于引导原因状语从句，解释主句动作（“I joined”，我加入）发生的原因。
I stayed home because it was raining.
我待在家里是因为下雨了。
EN： The simple past tense ('joined', 'invited') is used to describe completed actions that happened at a specific time in the past.
中文： 一般过去时（如“joined”和“invited”）用于描述在过去特定时间已经完成的动作。
She called me because she needed help.
她打电话给我，因为她需要帮助。
EN： In English-speaking cultures, peer invitation is a very common and highly valued reason for joining clubs or volunteering. It highlights the social aspect of community engagement, where friends motivate each other to participate in positive activities.
中文： 在英語系國家的文化中，同儕的邀請是加入社團或參與志願服務非常常見且備受重視的原因。這突顯了社區參與的社交面向，朋友們會互相激勵、共同參與有意義的活動。
EN： The conjunction 'even though' is used to introduce a concession clause. It expresses a strong contrast between two facts, meaning 'despite the fact that'. Note that in English, we do not use 'but' in the main clause when 'even though' is used.
中文： 从属连接词“even though”（虽然、尽管）用于引导让步修饰从句，表示两个事实之间有强烈的对比。需要特别注意的是，英语句中既然使用了“even though”，主要从句就不能再使用连接词“but”（但是）。
Even though it was raining, they played soccer.
虽然下着雨，他们还是踢了足球。
EN： 'Feel' is a linking verb (copular verb) that connects the subject to a subject complement (usually an adjective) describing the subject's state or emotion. In the past tense, it becomes 'felt'.
中文： “feel”（感觉、觉得）是一个系动词（linking verb），后面直接接形容词作为主语补语，用来描述主语的状态或感受。其过去式为“felt”。
She felt excited about the upcoming trip.
她对即将到来的旅行感到兴奋。
EN： In English-speaking cultures, volunteering and community service are highly valued. Expressing positive emotions ('felt happy') despite physical exhaustion ('tired') is a common narrative arc that emphasizes the intrinsic reward and moral fulfillment of helping others.
中文： 在英語系國家中，志願服務與社區參與是非常受重視的價值觀。儘管身體疲憊（tired）仍表達出內心的快樂（felt happy），這是一種常見的敘事方式，用以強調幫助他人所帶來的內在回報與心靈滿足感。
EN： First Conditional (Conditional Sentences Type 1): Used to talk about real and possible future situations. The condition clause (if-clause) uses the Simple Present tense ('if they need us'), while the main clause uses the Simple Future tense ('We will help again').
中文： 第一类条件句（假设语气）：用于描述在未来极有可能发生的真实情况。条件从句（if 从句）使用一般现在时（如 'if they need us'），而主要从句则使用一般将来时（如 'We will help again'）。
We will go to the park if it does not rain tomorrow.
如果明天不下雨，我们就会去公园。
EN： Adverb 'again': Used to describe an action that is repeated. In this sentence, it modifies the verb 'help', indicating that the assistance has happened before and will happen once more.
中文： 副词 'again'（再次）：用于修饰动词，表示动作的重复。在本句中，它修饰动词 'help'，表示帮忙的行为之前发生过，未来还会再次发生。
Please read the story again.
请把这个故事再读一遍。
EN： The verb 'matter' is an intransitive verb meaning 'to be important' or 'to have significance.' It does not require a direct object to complete its meaning.
中文： 动词“matter”是不及物动词，意思是“重要”或“有重大关系”。它不需要直接宾语来使句意完整。
Your opinion matters to us.
你的意见对我们来说很重要。
EN： The phrasal verb 'add up' means to gradually increase in amount or size until it becomes significant. It is often used to describe how small actions or amounts accumulate over time.
中文： 短语动词“add up”意为“积少成多”或“累计”。常用于描述微小的行动或数量随着时间推移而逐渐累积，最终产生显著的效果。
Saving a few dollars every day will eventually add up.
每天存几块钱，最后也会积少成多。
EN： The concept of 'small acts matter' is deeply rooted in the volunteer culture of English-speaking societies. It reflects the belief in individual agency—that anyone, regardless of age or resources, can make a meaningful contribution to the community through small, daily acts of kindness.
中文： 「微小善行也很重要」的概念深植於英語系國家的志工文化中。這反映了對個人力量的信念——即任何人不論年齡或資源多寡，都能透過日常生活中微小的善意舉動，為社區做出有意義的貢獻。
EN： The Simple Past Tense is used to describe completed actions that occurred at a specific time in the past. In this sentence, the past time marker 'Last month' triggers the use of the past tense verb 'started'.
中文： 一般过去时（Simple Past Tense）用于描述在过去特定时间已经完成的动作。在本句中，过去时间副词“Last month”（上个月）明确指出了时间，因此动词 start 必须使用过去式 started。
Last year we visited a local nursing home.
去年我们拜访了当地的一家养老院。
EN： Noun Adjuncts (or noun premodifiers) occur when a noun is used to modify another noun, functioning like an adjective. In 'community service project', 'community' and 'service' act as modifiers for the head noun 'project'.
中文： 名词作修饰语（Noun Adjuncts）是指用名词来修饰另一个名词，其功能类似形容词。在“community service project”（社区服务项目）中，“community”（社区）和“service”（服务）共同修饰中心名词“project”（项目）。
The school library needs more volunteers.
学校图书馆需要更多的志愿者。
EN： In many English-speaking countries, 'community service' is highly valued and often integrated into the school curriculum. High school students frequently participate in volunteer projects to develop civic responsibility, and these activities are often a key component of university applications.
中文： 在許多英語系國家，「社區服務」（community service）受到高度重視，且經常融入學校課程中。中學生經常參與志工服務以培養公民責任感，而這些活動通常也是申請大學時的重要加分項目。
EN： The subordinating conjunction 'because' is used to introduce a dependent adverbial clause of reason. It explains the cause or motivation behind the action in the main clause ('We cleaned the streets').
中文： 从属连接词“because”（因为）用于引导表示原因的状语从句。它解释了主句（我们打扫了街道）中动作发生的原因或动机。
We stayed indoors because it was raining heavily.
我们待在室内，因为雨下得很大。
EN： The verb 'deserve' is a transitive verb meaning to be worthy of something. It is typically followed by a noun phrase (like 'care') or an infinitive ('to be cared for') and is rarely used in the continuous/progressive tense.
中文： 及物动词“deserve”（值得、应得）表示配得上或该得到某事物。后面通常接名词短语（如“care”）或不定式，且极少用于进行时。
After working hard all day, you deserve a good rest.
辛苦工作了一整天，你值得好好休息。
EN： In many English-speaking cultures, community service and civic pride are highly valued. Taking care of one's town through volunteering (like cleaning streets or parks) is seen as a standard civic duty and a reflection of a strong, supportive community spirit.
中文： 在許多英語系國家的文化中，社區服務和公民自豪感（civic pride）受到高度重視。透過志願服務（如打掃街道或公園）來愛護自己的城鎮，被視為一種基本的公民義務，也體現了凝聚力強、互助的社區精神。
EN： The subordinating conjunction 'although' is used to introduce a concession clause, showing contrast. Unlike in Chinese where 'although' (雖然) and 'but' (但是) are often used together, in English, you must not use 'but' in the main clause when 'although' is used.
中文： 从属连接词“although”（虽然）用于引导让步状语从句，表示对比。与中文常将“虽然”和“但是”连用不同，在英语中，若从句开头使用了“although”，主要从句中绝对不能再用“but”。
Although it was raining, we went for a walk.
虽然在下雨，我们还是去散步了。
EN： The adverb 'never' is a frequency adverb used to indicate that something has not happened at any time. In the past simple tense, it directly precedes the main verb to emphasize a complete absence of the action in the past.
中文： 频率副词“never”（从未）用于表示某事在任何时候都没有发生过。在过去时中，它直接置于主要动词之前，以强调过去完全没有该行为。
EN： In English-speaking cultures, especially in volunteer and community service contexts, emphasizing teamwork and a positive attitude (like 'not complaining' despite hard work) is highly valued and seen as a sign of strong character and community spirit.
中文： 在英語系國家中，特別是在志願服務和社區服務的背景下，強調團隊合作與積極態度（例如儘管工作艱辛也「不抱怨」）是非常受到推崇的價值觀，這被視為良好品格和社區凝聚力的體現。
EN： The conjunction 'so that' is used to express purpose or intention. It is typically followed by a clause containing modal verbs like 'can', 'could', 'may', 'might', 'will', or 'would'. In this past tense sentence, 'could' is used to match the past tense verb 'collected'.
中文： 连词“so that”（以便、为了）用于表示目的或意图。其引导的从句通常包含助动词，如“can”、“could”、“may”、“might”、“will”或“would”。在本句中，因为主句动词“collected”为过去式，所以后面使用过去式助动词“could”以保持时态一致。
She saved money so that she could buy a new laptop.
她存了钱，以便能买一台新笔记本电脑。
EN： The word 'well' is used here as an adverb modifying the verb 'eat', meaning 'satisfactorily' or 'in a good way' (in this context, meaning having enough nutritious food to eat).
中文： “well”在此处作为副词使用，修饰动词“eat”，表示“令人满意地”或“妥善地”（在此语境中指吃得饱、吃得好）。
EN： In English-speaking countries, community food drives and food banks are very common. Schools, clubs, and local organizations frequently collect non-perishable food items to support low-income families in their communities, reflecting a strong culture of local volunteerism.
中文： 在英語系國家，社區食物募集（food drives）和食物銀行（food banks）非常普遍。學校、社團和地方組織經常募集不易腐壞的食品來幫助社區中的低收入家庭，這反映了當地深厚的志工服務文化。
EN： The pronoun 'some of us' functions as the subject of the sentence. The prepositional phrase 'of us' specifies the group from which 'some' is drawn. Since 'us' is plural, the verb that follows ('read') must agree in the plural form.
中文： 代词“some of us”（我们之中的一些人）作为句子主语。介词短语“of us”限定了“some”所指的群体。因为“us”是复数，所以后面的动词“read”必须使用复数动词形式。
Some of us prefer to work from home.
我们之中有些人更喜欢在家工作。
EN： The subordinating conjunction 'because' is used to introduce an adverbial clause of reason ('because they love stories'), which explains why some of us read to children.
中文： 从属连接词“because”（因为）用来引导原因状语从句（“because they love stories”），用以解释为什么我们之中有些人会读书给孩子们听。
We stayed indoors because it was raining heavily.
我们待在室内，因为雨下得很大。
EN： In many English-speaking countries, volunteering to read to children at local libraries, community centers, or schools is a very common and highly valued community service activity. It is seen as a way to foster a love for reading and support early childhood literacy.
中文： 在許多英語系國家，到當地圖書館、社區中心或學校擔任志工讀書給孩子們聽，是非常普遍且受到高度重視的社區服務活動。這被視為培養孩子閱讀興趣及支持早期幼兒識字能力的重要方式。
EN： The conjunction 'Even though' is used to introduce a concession clause, expressing a strong contrast between two situations. It is more emphatic than 'although' or 'though'. Note that in English, we do not use 'but' in the main clause when 'even though' is used.
中文： 连接词“Even though”（虽然、尽管）用于引导让步修饰从句，表示两个情况之间有强烈的对比。它比“although”或“though”语气更强。请注意，英语中既然使用了“even though”，主要从句中就不能再使用“but”（但是）。
Even though it was raining heavily, they finished the football match.
虽然雨下得很大，他们还是完成了足球比赛。
EN： The verbs 'get' and 'feel' are linking verbs (copular verbs) in this sentence. They are followed by adjectives ('tired', 'full') acting as subject complements to describe the state or change of state of the subject.
中文： 本句中的动词“get”和“feel”为系动词（linking verbs）。其后接形容词（“tired”、“full”）作为主语补语，用来描述主语的状态或状态的转变。
She felt happy when she saw her test results.
当她看到考试成绩时，她感到很高兴。
EN： In English-speaking cultures, the expression 'one's heart feels full' is a common idiom used to describe a deep sense of emotional satisfaction, gratitude, and happiness, often derived from helping others or experiencing meaningful connections.
中文： 在英語系國家中，表達「one's heart feels full」（心裡感到很滿/充實）是一個常見的成語，用來描述一種深層的情感滿足、感激與快樂，通常源自於幫助他人或體驗到人與人之間真摯的連結。
EN： The subordinating conjunction 'because' is used to introduce a dependent clause (adverbial clause of reason) that explains the cause or reason for the action in the main clause. In this sentence, 'because they need our support' explains why 'we helped'.
中文： 从属连接词“because”（因为）用于引导状语从句（表示原因的从属从句），用来解释主句动作发生的原因。在本句中，“because they need our support”解释了“we helped”的原因。
She stayed at home because it was raining heavily.
她待在家里，因为雨下得很大。
EN： The word 'elderly' is an adjective used to describe people who are old. When referring to older people as a group in a polite and respectful manner, 'elderly people' or 'the elderly' is commonly used in English.
中文： “elderly”是一个形容词，用来形容年长的人。当我们要礼貌且具尊重地指称年长者群体时，英语中常用“elderly people”或“the elderly”。
The community center offers various activities for elderly people.
社区中心为年长者提供各式各样的活动。
EN： In English-speaking cultures, referring to older individuals as 'elderly people' or 'seniors' is considered polite and respectful. Avoid using terms like 'old people' in formal or polite conversation as it can sometimes sound insensitive.
中文： 在英語系國家中，將年長者稱為「elderly people」或「seniors」被認為是禮貌且尊重的表達方式。在正式或禮貌的談話中，應避免直接使用「old people」，因為這有時會顯得不夠體貼或有些失禮。
EN： The concession conjunction 'although' is used to introduce a subordinate clause that presents a contrasting or surprising fact. In English, 'although' and 'but' cannot be used in the same sentence to connect the clauses; only one conjunction is needed.
中文： 让步连词“although”（虽然）用于引导一个让步从句，提出一个对比性或令人惊讶的事实。在英文中，“although”和“but”（但是）不能同时出现在同一个句子中，只需使用其中一个连词即可。
Although it was raining, they went for a walk.
虽然下着雨，他们还是去散步了。
EN： The idiom 'make a difference' means to have a significant effect on a person, group, or situation, usually in a positive way.
中文： 短语“make a difference”意为“有所作为”或“产生影响”，通常指对人、群体或处境产生积极、正面的影响。
Every volunteer can make a difference in the community.
每位志愿者都能为社区做出贡献。
EN： In Western culture, especially in volunteerism and community service, there is a strong belief that individuals of any age, including children and teenagers, have the power to contribute positively to society. This sentence reflects the empowering mindset taught to young people in schools.
中文： 在西方文化中，特別是在志願服務和社區參與方面，人們深信任何年齡的人（包括兒童和青少年）都有能力為社會做出積極貢獻。這句話反映了學校教育中常灌輸給年輕人的「自我賦權」與「社會責任」觀念。
EN： The verb 'teach' can take a double object structure (ditransitive verb), where 'us' is the indirect object (recipient) and the 'that' clause acts as the direct object (the thing being taught). The conjunction 'that' introduces a noun clause that functions as the direct object of the verb 'teaches'.
中文： 动词“teach”（教导）可以采用双宾语结构（双宾动词），其中“us”是间接宾语（接受者），而“that”引导的从句则作为直接宾语（被教导的事情）。连接词“that”引导一个名词性从句，在句中作为动词“teaches”的直接宾语。
Experience teaches us that patience is a virtue.
经验教会我们，耐心是一种美德。
EN： The simple present tense is used here ('teaches', 'changes') to express a general truth, timeless fact, or permanent state.
中文： 此处使用一般现在时（“teaches”、“changes”）来表示普遍真理、不随时间改变的事实或永久的状态。
Water boils at 100 degrees Celsius.
水在摄氏100度时沸腾。
EN： The concept of 'service' (volunteering and community service) is highly valued in English-speaking societies, often integrated into school curriculums to foster civic responsibility and empathy from a young age.
中文： 「服務」（志願服務與社區服務）的概念在英語系國家社會中受到高度重視，通常會融入學校課程中，以培養年輕一代的公民責任感與同理心。
EN： The sentence uses the 'Wh-' question word 'Why' to ask for a reason. In present simple questions with action verbs, the auxiliary verb 'do' (or 'does' for third-person singular) is placed before the subject, followed by the base form of the main verb.
中文： 本句使用疑问词“Why”（为什么）来询问原因。在一般现在时的行为动词疑问句中，助动词“do”（或第三人称单数的“does”）需置于主语之前，后接主要动词的原形。
Why do you study English?
你为什么学英语？
EN： The verb 'volunteer' can function as both a noun and an intransitive verb. Here, it is used as an intransitive verb meaning to offer to do something without being paid.
中文： 动词“volunteer”可作名词或不及物动词使用。在此处它作为不及物动词，意思是自愿无偿提供服务（当志愿者）。
They volunteer at the local animal shelter every Sunday.
他们每个星期天都在当地的动物收容所当志愿者。
EN： In English-speaking cultures, volunteering is highly valued and often integrated into school curriculums and community life. Asking someone why they volunteer is a common way to start a meaningful conversation about personal values and passions.
中文： 在英語系國家中，志願服務（當志工）非常受到重視，且經常融入學校課程與社區生活中。詢問他人為什麼當志工，是開啟關於個人價值觀與熱情等深度對話的常見方式。
EN： The subordinating conjunction 'because' is used to introduce a adverbial clause of reason, explaining why the action in the main clause ('I volunteer') happens.
中文： 从属连接词“because”（因为）用来引导原因状语从句，解释主句动作（I volunteer，我当志愿者）发生的原因。
I study hard because I want to pass the exam.
我努力学习是因为我想通过考试。
EN： The verb 'love' is followed by a gerund (verb-ing) to express a general preference or enjoyment of an activity. 'Helping' acts as the object of the verb 'love'.
中文： 动词“love”（喜爱）后面接动名词（V-ing）形式，用来表示对某项活动的普遍喜好或享受。“helping”在此作为动词“love”的宾语。
She loves reading books in her free time.
她空闲时喜欢读书。
EN： In English-speaking cultures, volunteering is highly valued and often seen as a key component of community building and personal growth. Expressing a personal motivation like 'loving to help others' is a very common and respected reason for participating in community service.
中文： 在英語系國家中，志願服務（義工活動）受到高度重視，常被視為社區建設和個人成長的重要基石。表達像「熱愛幫助他人」這樣的個人動機，是參與社區服務時非常常見且受人尊重的理由。
EN： The concession conjunction 'although' is used to introduce a subordinate clause that contains a contrasting statement. In English, unlike in Chinese, we do not use 'but' in the main clause when 'although' is used to start the sentence.
中文： 让步连词“although”（虽然）用于引导包含对比陈述的从属从句。在英语中，当句首使用了“although”时，主要从句中**不能**再使用“but”（但是），这与中文的“虽然……但是……”双重关联词结构不同。
Although it was raining, we went for a walk.
虽然下着雨，我们还是去散步了。
EN： The adverb 'still' is used to emphasize that an action or situation continues to happen despite what has just been mentioned (the concession in the 'although' clause). It usually placed before the main verb.
中文： 副词“still”（仍然、还是）用于强调尽管发生了前面所提到的情况（即 although 引导的让步从句），某个动作或状况依然持续发生。它通常置于主要动词之前。
Although she was tired, she still finished her homework.
虽然她很累，她还是完成了作业。
EN： The 'because' clause (causal clause) explains the reason for the main clause. In English, 'because' introduces a subordinate clause that provides the cause or reason. The main clause comes first, followed by 'because' and the reason.
中文： “because”从句（因果从句）说明主句的原因。在英文中，“because”引导一个从句，提供原因或理由。主句先出现，然后是“because”和原因。
She studies hard because she wants to pass the exam.
她努力学习，因为她想通过考试。
EN： The verb 'trust' is a transitive verb that requires a direct object. It means to have confidence or faith in someone or something. The object here is 'this team,' which receives the action of trusting.
中文： 动词“trust”是及物动词，需要直接宾语。它表示对某人或某事有信心或信任。这里的宾语是“this team”，接受信任的动作。
I trust my best friend with my secrets.
我信任我最好的朋友，把秘密告诉他。
EN： In the context of volunteering and community service (as shown in the surrounding dialogue), expressing trust in a team is important for building group cohesion. The phrase reflects values of teamwork and collective responsibility common in community-oriented cultures.
中文： 在志願服務和社區服務的背景下（如周圍對話所示），表達對團隊的信任對於建立群體凝聚力很重要。這個短語反映了在以社區為導向的文化中常見的團隊合作和集體責任的價值觀。
EN： The 'so that' clause (purpose clause) expresses the reason or intention behind an action. It uses the infinitive form of the verb and shows the desired result or goal. The structure is: [action] + so that + [desired result].
中文： “so that”从句（目的从句）表达行动背后的原因或意图。它使用动词的不定式形式，并显示期望的结果或目标。结构是：[行动] + so that + [期望的结果]。
I study hard so that I can pass the exam.
我努力学习，以便我能通过考试。
EN： Present simple tense is used here to express habitual actions, general truths, or routine activities. In this sentence, 'work' and 'stays' describe what the group regularly does and the ongoing state of the park.
中文： 一般现在时用于表达习惯性行动、普遍真理或日常活动。在这句话中，“work”和“stays”描述了小组经常做的事情和公园的持续状态。
She exercises every morning so that she stays healthy.
她每天早上运动，以便保持健康。
EN： This sentence reflects the value of community service and environmental stewardship, which are important in many cultures. The use of 'so that' emphasizes the purposeful nature of volunteer work—connecting individual effort to collective benefit. This is a common way to express motivation in community service contexts.
中文： 這句話反映了社區服務和環境保護的價值，這在許多文化中都很重要。使用「so that」強調了志願工作的目的性——將個人努力與集體利益聯繫起來。這是在社區服務背景下表達動機的常見方式。
EN： Concessive clauses with 'even though' express a contrast between two ideas. The 'even though' clause presents an obstacle or difficulty, while the main clause shows that the action continues despite this obstacle. This structure emphasizes determination and persistence.
中文： 让步状语从句使用“even though”来表达两个想法之间的对比。“even though”从句提出一个障碍或困难，而主句则显示尽管存在这个困难，行动仍然继续。这种结构强调决心和坚持。
Even though the project was difficult, we completed it on time.
尽管这个项目很困难，我们仍然按时完成了。
EN： The present simple tense 'keep planting' (or 'keep + verb-ing') indicates a continuous or repeated action in the present. This construction emphasizes the ongoing nature of the activity and shows persistence despite the mentioned difficulty.
中文： 一般现在时“keep planting”（或“keep + 动词-ing”）表示现在的连续或重复动作。这种结构强调活动的持续性，并显示尽管存在提到的困难，仍然坚持进行。
Even though she is busy, she keeps studying every day.
尽管她很忙，她仍然每天坚持学习。
EN： This sentence reflects a common theme in community service and environmental activism in English-speaking cultures, where persistence despite challenging conditions (like heat) is valued and celebrated. Volunteering despite discomfort demonstrates commitment to the community.
中文： 這句話反映了英語文化中社區服務和環保行動的常見主題，其中儘管條件困難（如炎熱）仍然堅持被重視和讚揚。儘管不適仍然志願服務表明了對社區的承諾。
EN： The 'because' clause (causal clause) explains the reason for the main action. In English, we use 'because' to connect a cause (reason) with an effect (result). The structure is: Main clause + because + reason clause.
中文： “because”从句（因果从句）说明主要动作的原因。英语中，我们用“because”来连接原因和结果。结构是：主要从句 + because + 原因从句。
She studied hard because she wanted to pass the exam.
她努力学习，因为她想通过考试。
EN： Past tense with emotional verbs: 'felt happy' uses the past tense to describe a completed emotional state. The verb 'felt' (past of 'feel') combines with an adjective 'happy' to express how someone felt at a specific time in the past.
中文： 过去时与情感动词：“felt happy”用过去时来描述已完成的情感状态。动词“felt”（feel 的过去式）与形容词“happy”结合，表达某人在过去特定时间的感受。
He felt proud because he completed the project successfully.
他感到骄傲，因为他成功完成了这个项目。
EN： Volunteering and community service are highly valued in many English-speaking cultures. Expressing one's feelings about helping others reflects the cultural importance of altruism and social responsibility. Emma's statement demonstrates how personal satisfaction from helping is a common motivation for volunteering.
中文： 在許多英語文化中，志願服務和社區服務受到高度重視。表達幫助他人的感受反映了利他主義和社會責任的文化重要性。艾瑪的陳述展示了幫助他人所帶來的個人滿足感如何成為志願服務的常見動力。
EN： The coordinating conjunction 'but' is used to connect two independent clauses (complete sentences) that show contrast. In this sentence, 'He gave his time' and 'he never complained' are joined by 'but' to highlight the contrast between his effort and his lack of complaints.
中文： 并列连词“but”（但是）用于连接两个表示对比的独立分句（完整句子）。在本句中，“He gave his time”与“he never complained”由“but”连接，以强调他付出的努力与他毫无怨言之间的对比。
She studied hard, but she did not pass the exam.
她努力学习，但她没有通过考试。
EN： The frequency adverb 'never' is used to indicate that an action has not occurred at any time. In past tense sentences, 'never' is placed directly before the main verb (e.g., 'never complained') to emphasize the absolute absence of the action in the past.
中文： 频率副词“never”（从未）用于表示某个动作在任何时候都没有发生过。在过去时句子中，“never”直接置于主要动词之前（例如“never complained”），以强调过去完全没有该动作的发生。
They never visited that museum when they lived in Paris.
他们住在巴黎时从未参观过那家博物馆。
EN： In English-speaking cultures, 'giving one's time' (volunteering) is highly valued. Complaining about hard work is often seen as poor sportsmanship, so someone who 'never complained' while helping others is regarded with deep respect and admiration.
中文： 在英語系國家中，「付出時間」（參與志願服務）是一項受到高度重視的價值觀。對於辛苦的工作進行抱怨往往被視為缺乏風度，因此一個在幫助他人時「從不抱怨」的人，會受到人們深切的尊敬與讚賞。
EN： The subordinating conjunction 'because' is used to introduce a clause that states the reason for something. In English, unlike in Chinese, we do not use 'because' and 'so' in the same sentence to connect clauses.
中文： 从属连接词“because”（因为）用来引导表示原因的从句。在英语中，同一个句子里不能同时使用“because”和“so”（所以）来连接从句，这与中文“因为……所以……”的习惯不同。
We stayed indoors because it was raining.
因为下雨，我们待在室内。
EN： The adverb 'together' is used to describe an action done by two or more people in close association or cooperation. It typically modifies the verb and is placed after the verb or verb phrase.
中文： 副词“together”（一起、共同）用来描述两个或以上的人共同进行的动作。它通常修饰动词，并置于动词或动词短语之后。
They solved the problem together.
他们一起解决了那个问题。
EN： In English-speaking cultures, especially in academic and professional settings, 'working together' (collaboration and teamwork) is highly valued. Expressing gratitude or acknowledging that success was a collective effort is a common and appreciated social norm.
中文： 在英語系國家的文化中，無論是在學校還是工作場合，都非常重視「團隊合作」（collaboration / teamwork）。在表達成果時，強調這是大家「共同努力」的結果，是一種非常受到讚賞且常見的社交禮儀。
EN： The subordinating conjunction 'although' is used to introduce a concession clause, showing contrast. In English, when 'although' is used at the beginning of a sentence, we do not use 'but' in the main clause.
中文： 从属连词“although”（虽然）用于引导让步状语从句，表示对比。在英文中，当句首使用了“although”，主句中就不能再使用“but”（但是）。
Although it was raining, we went for a walk.
虽然下着雨，我们还是去散步了。
EN： Linking verbs (copular verbs) like 'feel' are followed by adjectives (such as 'tired' and 'proud') to describe the subject's state, rather than adverbs.
中文： 系动词（如feel）后面须接形容词（如tired和proud）来修饰主语的状况，而非副词。
She feels happy about her test results.
她对自己的考试成绩感到高兴。
EN： In English-speaking cultures, volunteering and community service are highly valued. Expressing pride in hard work (even when tired) is a common and positive sentiment, reflecting a strong sense of civic duty and personal fulfillment.
中文： 在英語系國家中，志願服務和社區參與備受重視。表達對辛勤工作（即使疲憊）的自豪感是一種常見且正向的情感，反映了強烈的公民責任感與個人成就感。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 志愿服务，无偿为社会或他人提供帮助的行为
在本文中： 捐赠，将物品或金钱无偿赠送给需要的人或机构
在本文中： 值得，应得（某种对待、回报或关注）
在本文中： 抱怨，表达不满或痛苦
在本文中： 年长的，上了年纪的（通常指老人，比old更礼貌和尊重）
在本文中： 影响，改变（通常指带来积极、正面的改变）
在本文中： 信任，相信某人的诚实、能力或可靠性
在本文中： 社区服务，为改善社区而进行的公益性无偿劳动
片语包含类型标示、双语定义、用法说明和例句。
To accumulate or increase gradually to a significant amount or effect.
积少成多，聚沙成塔
To have a significant effect on a person or situation, typically a positive one.
发挥作用，产生积极影响，做出贡献
To spend one's time doing something, especially for free or to help others.
付出时间，奉献时间