EN： Present Participle Clauses (分詞構句): Used to reduce an adverbial clause (like 'While I was walking...') when the subject of both clauses is the same. The active action is replaced with a present participle (V-ing).
中文： 现在分词构句：当状语从句（如 'While I was walking...'）与主句的主语相同时，可简化从句。主动动作会改为现在分词（V-ing）开头。
Singing in the shower, he didn't hear the phone ring.
在浴室唱歌时，他没有听到电话响。
EN： Simple Past Tense (簡單過去式): Used to describe completed actions in the past. Here, 'saw' is the irregular past tense of 'see'.
中文： 一般过去时：用于描述过去已完成的动作。在此处，'saw' 是动词 'see' 的不规则过去式。
EN： Participle clauses (specifically using present participles like 'Feeling') are used to express a reason or cause, acting as a shortened version of an adverbial clause (e.g., 'Because I felt tired...'). The subject of the participle clause must be the same as the subject of the main clause.
中文： 分词从句（特别是使用现在分词如 'Feeling'）可用于表示原因或理由，作为副词从句的简化形式（例如：'Because I felt tired...'）。分词从句的逻辑主语必须与主要从句的主语一致。
Feeling hungry, we decided to order some pizza.
因为肚子饿，我们决定点些披萨。
EN： The phrasal verb 'sit down' means to lower your body into a seat. It is often followed by an infinitive of purpose, such as 'to rest', which explains the reason for the action.
中文： 短语动词 'sit down' 意为「坐下」。它后面经常接不定式（如 'to rest'）来表示目的，用以解释该动作的原因。
EN： Perfect Participle Clause: The structure 'Having + past participle' (Having finished) is used to show that one action was completed before another action in the main clause started. It is a concise way to connect two actions with the same subject.
中文： 完成分词从句：结构「Having + 过去分词」（如 Having finished）用于表示一个动作在主句动作开始之前已经完成。这是一种将具有相同主语的两个动作连接起来的简洁方式。
Having packed her bags, Emma left for the airport.
收拾好行李后，艾玛出发前往机场。
EN： Adverbial Particle 'outside': Used here as an adverb of place to indicate movement to the exterior of a building. It modifies the verb 'went'.
中文： 地点副词「outside」：在此处用作地点副词，表示移动到建筑物外部。它修饰动词「went」。
The children ran outside to play in the snow.
孩子们跑到户外去在雪地里玩耍。
EN： Present Participle Clause (V-ing) for simultaneous or sequential actions: When two actions are performed by the same subject, the first action can be reduced to a present participle clause. Here, 'Hearing the news' replaces 'When we heard the news' to make the sentence more concise.
中文： 现在分词引导的状语从句（简化状语从句）：当两个动作由同一个主语发出时，可以将其中一个动作简化为现在分词（V-ing）开头的短语。在此处，「Hearing the news」代替了「When we heard the news」，使句子更为精炼。
Seeing the police officer, the thief ran away.
一看到警察，小偷就逃跑了。
EN： Subject-Verb-Adverb pattern with 'all': The word 'all' is used as a pronoun in apposition to the subject 'we', emphasizing that every person in the group participated in the action. The adverb 'loudly' modifies the verb 'cheered'.
中文： 主语 + 同位语 'all' + 动词 + 副词结构：单词 'all' 在此作为主语 'we' 的同位语，用以强调群体中的每个人都参与了该动作。副词 'loudly' 则修饰动词 'cheered'，说明欢呼的状态。
We all laughed happily.
我们大家都开心地笑了。
EN： In English-speaking cultures, cheering loudly as a group is a common and socially acceptable way to express collective joy, relief, or excitement, whether in sports, classrooms, or casual gatherings.
中文： 在英語系國家中，群體一起大聲歡呼（cheering）是表達集體喜悅、釋放壓力或興奮的常見且被社會廣泛接受的方式，無論是在體育賽事、教室還是日常聚會中都很常見。
EN： Present Participle Clause (Participle Construction): The -ing clause 'Looking up' is used to reduce an adverbial clause of time (When I looked up) when the subject of both clauses is the same (I). It makes the sentence more concise and literary.
中文： 现在分词从句（分词构句）：这里的 -ing 从句 'Looking up' 用于简化时间状语从句（当我抬头看时），前提是两个从句的主语必须相同（皆为 I）。这种用法能使句子更精炼且具文学感。
Walking into the room, she saw her friends waiting for her.
走进房间时，她看到朋友们正在等她。
EN： Perception Verb + Object + Present Participle: The verb 'notice' is a verb of perception. When followed by an object and a present participle (-ing), it emphasizes that the action was in progress or happening at the moment of observation.
中文： 感官动词 + 宾语 + 现在分词：动词 'notice'（注意到）为感官动词。后接宾语与现在分词（-ing）时，用以强调在观察的当下，该动作正在进行或发生中。
I heard the birds singing in the trees.
我听到鸟儿在树上唱歌。
EN： Past Participle Clause (分詞短語): A past participle clause can be used to express a reason or cause. It is a reduced adverbial clause where the subject is the same as the subject in the main clause (in this case, 'we'). 'Surprised by the rain' is short for 'Because we were surprised by the rain'.
中文： 过去分词引导的修饰短语（分词构句）：过去分词短语可用于表示原因或理由。这是一种简化的副词从句，其逻辑主语与主要从句的主语相同（在此句中为「we」）。「Surprised by the rain」是「Because we were surprised by the rain」的简化版。
Exhausted by the long walk, they fell asleep quickly.
因长途跋涉而疲惫不堪，他们很快就睡着了。
EN： Prepositional Phrase for Purpose: 'For shelter' uses the preposition 'for' to indicate the purpose or goal of the action 'ran'.
中文： 表示目的的介词短语：这里的「for shelter」使用介词「for」来表示动作「ran」（跑）的目的或目标（寻求遮蔽）。
We ran for the bus before it started moving.
我们在公交车发车前朝它跑去。
EN： Present Participle Clause (分詞構句): Used to reduce an adverbial clause when the subject of both clauses is the same. 'Holding her hand' is short for 'While he was holding her hand'. It describes an action happening at the same time as the main verb 'crossed'.
中文： 现在分词短语（分词构句）：当主句和从句的主语相同时，可用于简化副词从句。「Holding her hand」是「While he was holding her hand」的简化版，用来描述与主句动词「crossed」同时发生的动作。
Smiling warmly, she welcomed the guests.
她温暖地微笑着，迎接了客人。
EN： Transitive Verb and Object: The verb 'crossed' is a transitive verb that requires a direct object ('the busy street') to complete its meaning.
中文： 及物动词与宾语：动词「crossed」（穿过）是一个及物动词，需要直接宾语（「the busy street」，繁忙的街道）来完整表达其意义。
They crossed the finish line together.
他们一起跨越了终点线。
EN： Participial Phrase (Adjectival/Past Participle): The sentence begins with a past participle phrase 'Excited about the trip' which functions as an adjective modifying the subject 'I'. It is a shortened form of an adverbial clause of reason (e.g., 'Because I was excited about the trip...').
中文： 分词短语（形容词性/过去分词）：句子开头的「Excited about the trip」是一个过去分词短语，用作形容词来修饰主语「I」（我）。这是原因状语从句（例如「Because I was excited...」）的简化结构。
Tired from the long walk, she fell asleep quickly.
因为长途跋涉而感到疲倦，她很快就睡着了。
EN： Adverbial use of 'early': The word 'early' is used here as an adverb modifying the verb 'packed', indicating that the action of packing occurred before the usual or expected time.
中文： 副词「early」的用法：此处「early」用作副词，修饰动词「packed」（打包），表示收拾行李的动作发生在通常或预期的时间之前。
We arrived early to get good seats.
我们提早到达以获得好座位。
EN： A participle clause (here, 'Not knowing the way') is a clause that starts with a participle (an -ing or -ed verb form). It is used to express reasons, time, or conditions in a more concise way, sharing the same subject as the main clause ('we'). To make a participle clause negative, we place 'not' directly before the participle.
中文： 分词从句（此处为 'Not knowing the way'）是以分词（-ing 或 -ed 动词形式）开头的从句。它用于以更简洁的方式表达原因、时间或条件，且与主句共享相同的主语（'we'）。要使分词从句否定，我们直接在分词前加上 'not'。
Not wanting to wake the baby, she walked on tiptoe.
因为不想吵醒婴儿，她蹑手蹑脚地走着。
EN： The phrase 'ask for' is a phrasal verb meaning to request something. It is followed by a noun representing the thing being requested (e.g., 'help', 'directions', 'permission').
中文： 短语 'ask for' 是一个动词短语，意思是请求、寻求某事物。后面接一个名词，代表所请求的事物（例如：'help' 协助、'directions' 指引、'permission' 许可）。
If you don't understand the instructions, ask for clarification.
如果你不理解这些说明，请要求解释。
EN： Past Participle Participle Clause: The sentence starts with a past participle phrase ('Encouraged by friends') which acts as an adverbial clause. It is a shortened form of 'Because she was encouraged by friends'. The past participle ('Encouraged') is used because the subject ('she') receives the action of being encouraged (passive voice).
中文： 过去分词引导的分词构句：句子开头的过去分词短语「Encouraged by friends」充当副词从句，是「Because she was encouraged by friends」的简化形式。这里使用过去分词「Encouraged」，是因为主语「she」与该动作的关系是被动的（她「被」鼓励）。
Satisfied with the results, the manager approved the project.
对结果感到满意，经理批准了这个项目。
EN： Adverbial 'again': The adverb 'again' is used to indicate repetition, showing that the action of trying had occurred before and is being repeated.
中文： 副词「again」的用法：副词「again」用来表示动作的重复，显示「尝试」这个动作之前已经发生过，现在再次进行。
After failing the first test, he decided to study hard and try again.
在第一次考试不及格后，他决定努力学习并再次尝试。
EN： Present Participle Clause (Participle Construction): Used to describe two actions happening at the same time by the same subject. 'Smiling brightly' functions as an adverbial clause modifying the main action 'waved'. It is shortened from 'While the child was smiling brightly...'.
中文： 现在分词短语（分词构句）：用于描述同一个主语同时进行的两个动作。「Smiling brightly」作为副词短语，修饰主句的动作「waved」。它是由「While the child was smiling brightly...」简化而来。
Singing happily, the birds flew away.
鸟儿快乐地歌唱着飞走了。
EN： Phrasal Verb 'wave at': To move one's hand to and fro in greeting or signal to someone. 'At' is the preposition used to indicate the target of the wave.
中文： 短语动词「wave at」：指挥手向某人打招呼或示意。「At」是介词，用来指出挥手对象。
She waved at her friends from the train window.
她从火车车窗向朋友们挥手。
EN： This sentence uses a past participle clause ('Used wisely') as an adverbial modifier. It is a reduced adverbial clause (originally 'If it is used wisely'). The past participle 'used' is used because the subject 'time' receives the action of being used (passive voice).
中文： 本句使用过去分词引导的从句（'Used wisely'）作为副词修饰语。这是一种简化的副词从句（原为 'If it is used wisely'）。使用过去分词 'used' 是因为主语 'time'（时间）是被使用的对象（被动语态）。
Seen from a distance, the island looks like a sleeping giant.
从远处看，这座岛屿看起来像一个熟睡的巨人。
EN： The linking verb 'become' is used to describe a change of state, connecting the subject 'time' with the subject complement 'our best friend'.
中文： 系动词 'become'（成为）用于描述状态的改变，将主语 'time'（时间）与主语补足语 'our best friend'（我们最好的朋友）连接起来。
With practice, she became a skilled pianist.
通过练习，她成为了一位熟练的钢琴家。
EN： This sentence reflects a common philosophical theme in English-speaking cultures regarding time management and mindfulness. Time is often personified (e.g., 'Time is money', 'Time heals all wounds'), and treating time as a 'friend' emphasizes a positive, proactive relationship with one's daily schedule.
中文： 這句話反映了英語系國家中關於時間管理與正念的常見哲學主題。時間在英語中經常被擬人化（例如「時間就是金錢」、「時間能治癒一切創傷」），而將時間視為「朋友」則強調了與個人日常日程建立積極、主動的關係。
EN： Present Participle Clause (Participle Construction): Used to reduce an adverbial clause (such as because/when/after clauses) when the subject of both clauses is the same. 'Waking up early' replaces 'Because I woke up early'.
中文： 现在分词短语（分词构句）：当主句与从属从句的主语相同时，可用于简化状语从句（如表示原因、时间的从句）。「Waking up early」代替了「Because I woke up early」。
Arriving at the station, she realized she had left her ticket at home.
到达车站时，她发现自己把车票忘在家里了。
EN： Decide to + Infinitive: The verb 'decide' is followed by a to-infinitive (to + base verb) to express a choice or plan made by the subject.
中文： Decide to + 不定式：动词「decide（决定）」后面必须接不定式（to + 原形动词），用来表示主语所做的决定或计划。
They decided to buy a new car next month.
他们决定下个月买一辆新车。
EN： Present Participle Clauses (V-ing) can be used to describe two actions happening at the same time or one immediately after another, sharing the same subject. 'Stepping outside' is a shortened form of 'When I stepped outside'.
中文： 现在分词引导的从句（V-ing 分词构句）可用于描述两个同时发生或接连发生的动作，且这两个动作的主语必须相同。这里的 'Stepping outside' 是 'When I stepped outside' 的简化形式。
Walking into the room, she saw her friends waiting for her.
一走进房间，她就看到朋友们正在等她。
EN： The preposition 'on' is used here to indicate the surface where the physical sensation is felt ('on my face').
中文： 介词 'on' 在此处用于表示感受身体知觉的表面部位（'on my face'，意即「在我的脸上」）。
I felt the warm sun on my back.
我感觉到温暖的阳光照在我的背上。
EN： Participle Clauses (Present Participle): A present participle clause ('Walking down...') can be used to express two actions happening at the same time, or one action happening immediately after another. The subject of the participle clause must be the same as the subject of the main clause (in this case, 'I').
中文： 分词从句（现在分词）：现在分词引导的从句（如 'Walking down...'）可用于表示两个动作同时发生，或一个动作紧接另一个动作发生。分词从句的逻辑主语必须与主要从句的主语一致（在此句中为 'I'）。
Walking in the park, she met her old friend.
在公园散步时，她遇见了她的老朋友。
EN： Verbs of Perception + Object + Participle: Verbs of perception like 'hear', 'see', or 'watch' can be followed by an object and a present participle (-ing form) to emphasize that the action was in progress or ongoing when it was perceived.
中文： 感官动词 + 宾语 + 现在分词：像 'hear'（听见）、'see'（看见）或 'watch'（观看）这类的感官动词，后面可以接宾语和现在分词（-ing 形式），用以强调感官察觉到该动作时，该动作正在进行中。
I saw him running across the street.
我看到他正跑过马路。
EN： Past Participle Clause (Participle Construction): Used to describe the reason or state of the subject in the main clause. It is a shortened form of an adverbial clause (e.g., 'Because I was surprised by the calm...'). Since the subject 'I' receives the action of being surprised, the past participle 'Surprised' is used.
中文： 过去分词引导的分词构句：用于描述主句主语的原因或状态。这是状语从句的简化形式（例如：'Because I was surprised by the calm...'）。由于主语「I」（我）是被惊讶到的（被动状态），因此使用过去分词「Surprised」。
Exhausted by the long walk, she fell asleep immediately.
因长途跋涉而疲惫不堪，她立刻睡着了。
EN： Transitive Verb and Possessive Determiner: The verb 'slowed' is used transitively here, meaning 'to make something move slower'. It is followed by the direct object 'my busy steps', where 'my' is a possessive determiner showing ownership of the steps.
中文： 及物动词与所有格限定词：动词「slowed」在此作及物动词使用，意思是「使某物移动得更慢」。其后接直接宾语「my busy steps」，其中「my」为所有格限定词，表示步骤（脚步）的所有权。
He slowed his car when he saw the red light.
当他看到红灯时，他放慢了车速。
EN： The perfect participle ('Having + past participle') is used in participle clauses to show that the action in the participle clause was completed before the action in the main clause.
中文： 完成分词（Having + 过去分词）用于分词从句中，表示该动作在主要从句的动作发生之前已经完成。这常用于简化句子并强调时间先后顺序。
Having finished his homework, Leo went out to play basketball.
完成了作业后，里奥出去打篮球。
EN： The past perfect tense ('had + past participle') is used to describe an action or state that occurred before another action or a specific time in the past.
中文： 过去完成时（had + 过去分词）用于描述在过去某个动作或特定时间点之前，就已经发生或完成的动作或状态。
By the time the movie started, we had already bought our popcorn.
在电影开始之前，我们就已经买好爆米花了。
EN： Present Participle Clause (分詞構句): Used to reduce an adverbial clause when the subject of both clauses is the same. Here, 'Watching...' replaces 'While I was watching...' to make the sentence more concise and flow better in writing.
中文： 现在分词短语（分词构句）：当主句和从句的主语相同时，可用于简化状语从句。在此处，“Watching...”代替了“While I was watching...”，使句子在写作中更为简洁流畅。
Walking down the street, I ran into an old friend.
走在街上时，我偶遇了一位老朋友。
EN： Bare Infinitive after Sensory Verbs (感官動詞後接原形動詞): The sensory verb 'watch' is followed by an object ('the sun') and a bare infinitive ('rise') to emphasize that the entire action was witnessed from start to finish.
中文： 感官动词后接原形动词：感官动词“watch”（观看）后面接宾语（“the sun”）和原形动词（“rise”），用以强调完整目睹了该动作从开始到结束的过程。
We watched the plane land safely.
我们看着飞机安全降落。
EN： A present participle phrase (verb-ing) can be used as an adjective phrase to modify a noun. It is a shortened form of a relative clause (e.g., 'who was sweeping his shop') and describes an active action happening at the same time as the main verb.
中文： 现在分词短语（动词-ing）可用作形容词短语来修饰名词。它是关系从句（例如 'who was sweeping his shop'）的简化形式，用以描述与主句动词同时发生的主动动作。
The girl, sitting by the window, read a book.
坐在窗边的女孩正在读一本书。
EN： Compound verbs share the same subject. When a subject performs two or more actions, we can connect the verbs using 'and' (e.g., 'smiled and greeted') without repeating the subject.
中文： 复合动词共享同一个主语。当主语执行两个或多个动作时，我们可以使用 'and' 连接这些动词（例如 'smiled and greeted'），而不需要重复主语。
He stood up and walked to the door.
他站起身并走向门口。
EN： This sentence uses a past participle clause ('Encouraged by...') to express a reason or cause. It is a reduced adverbial clause (originally 'Because I was encouraged by...'). The subject of the participle clause must be the same as the subject of the main clause ('I').
中文： 本句使用了过去分词引导的分词构句（'Encouraged by...'）来表示原因或理由。这是一种简化的状语从句（原为 'Because I was encouraged by...'）。分词构句的逻辑主语必须与主要从句的主语（'I'）一致。
Excited by the news, she called her mother immediately.
受到这个消息的鼓舞，她立刻打电话给她母亲。
EN： The word 'too' is an adverb used at the end of a sentence to mean 'also' or 'as well'. It is typically preceded by a comma in writing, especially when adding emphasis.
中文： 单词 'too' 是一个副词，用于句尾，表示「也」或「同样」。在书写时，通常会在前面加上逗号，特别是为了加强语气时。
He wants to join the soccer team too.
他也想加入足球队。
EN： In English-speaking cultures, greeting strangers or acquaintances with a warm smile and a simple 'hello' is a common social lubricant, especially in smaller communities or friendly neighborhoods. This sentence reflects how positive social energy ('warmth') easily propagates from one person to others.
中文： 在英語系國家中，用溫暖的微笑和簡單的「哈囉」向陌生人或熟人打招呼是一種常見的社交潤滑劑，特別是在小型社區或友善的鄰里間。這句話反映了積極的社交能量（'warmth'）是如何輕易地在人與人之間傳遞的。
EN： Participle Clauses (Present Participle): Used to express two actions happening at the same time by the same subject. 'Passing the park' is a shortened form of 'While I was passing the park'.
中文： 分词从句（现在分词）：用于表示由同一主语同时发生的两个动作。「Passing the park」是「While I was passing the park」（当我路过公园时）的简化形式。
Walking down the street, she met her old friend.
走在街上时，她遇到了她的老朋友。
EN： Sensory Verb + Object + Present Participle: The verb 'see' (saw) is followed by an object ('runners') and a present participle ('starting') to indicate that the subject witnessed an action in progress.
中文： 感官动词 + 宾语 + 现在分词：动词「see」（saw）后面接宾语（runners）和现在分词（starting），用以表示主语目击了正在进行中的动作。
I saw them playing basketball in the yard.
我看到他们正在院子里打篮球。
EN： In Western countries, especially in urban areas, parks are central to community life. 'Starting their day' with an early morning run is a very common lifestyle habit, reflecting a cultural emphasis on personal health, fitness, and outdoor activity.
中文： 在西方國家（特別是城市地區），公園是社區生活的中心。清晨在公園跑步「開始新的一天」是非常普遍的生活習慣，反映了人們對個人健康、體能鍛鍊和戶外活動的文化重視。
EN： This sentence starts with a past participle clause ('Filled with energy'), which is a type of participial phrase. It functions as an adjective modifying the subject 'I'. It is a shortened version of 'Because I was filled with energy...'. This structure is common in written English to describe the state or cause of the subject's action.
中文： 本句以过去分词短语（'Filled with energy'）开头，这是一种分词构句。它在句中充当形容词，修饰主语“I”（我）。这是“Because I was filled with energy...”的简化版。这种结构在书面英语中非常常见，用于描述主语动作的状态或原因。
Exhausted by the long walk, she fell asleep immediately.
因长途跋涉而疲惫不堪，她立刻睡着了。
EN： The adjective phrase 'ready for anything' acts as a subject complement (or a depictive modifier) describing the state of the subject 'I' at the time of returning home. It means 'in a state of being prepared for whatever might happen'.
中文： 形容词短语“ready for anything”作为主语补足语（或描绘性修饰语），描述主语“I”回到家时的状态。意思是“处于准备好应对任何可能发生的事情的状态”。
He arrived at the interview confident of success.
他抵达面试现场，对成功充满信心。
EN： Participle Clauses (Present Participle): 'Looking back' is a participle clause used to describe an action happening at the same time as the main clause, or to set the scene. The implied subject of the participle clause must be the same as the subject of the main clause (in this case, the speaker 'I', though here it acts as a general perspective modifier for the whole situation).
中文： 分词短语（现在分词）：'Looking back'（回想起来）是一个分词短语，用于描述与主句同时发生的动作或用于铺陈情境。分词短语的逻辑主语通常必须与主句的主语一致（在此句中，虽然主句主语是 'that simple walk'，但 'looking back' 作为固定悬垂分词用法，表示说话者「我」回首过去时的感受）。
Looking out the window, I saw a shooting star.
看着窗外，我看到了一颗流星。
EN： Past Perfect Tense: 'Had changed' uses the past perfect tense (had + past participle) to show that the change in mood occurred prior to the moment of 'looking back' or the specific past timeframe being discussed.
中文： 过去完成时：'Had changed' 使用了过去完成时（had + 过去分词），用以表示心情的改变发生在「回首过去」或所讨论的特定过去时间点之前。
By the time the movie started, we had already bought our popcorn.
在电影开始之前，我们就已经买好爆米花了。
EN： Past Participle Clause (Reduced Relative Clause): The sentence starts with 'Seen with fresh eyes', which is a past participle clause acting as an adverbial modifier. It is a shortened form of 'When it is seen with fresh eyes'. The implied subject of this clause must be the same as the subject of the main clause ('the ordinary').
中文： 过去分词引导的修饰从句（简化状语从句）：句子开头的 'Seen with fresh eyes' 是一个过去分词短语，用作状语修饰语。它是 'When it is seen with fresh eyes' 的省略形式。该从句的逻辑主语必须与主句的主语（'the ordinary'）一致。
Written in simple English, the book is easy to understand.
这本书用简单的英文写成，很容易理解。
EN： The Nominal Use of Adjectives: 'The ordinary' uses the definite article 'the' followed by an adjective to function as a noun, meaning 'ordinary things' or 'that which is ordinary'.
中文： 形容词名词化：'The ordinary' 使用定冠词 'the' 加上形容词，使其具有名词的功能，意指「平凡的事物」或「普通的东西」。
We should always respect the elderly.
我们应该要一直尊重年长者。
EN： The sentence uses a participle clause ('walking to school') as an adverbial modifier. This is a reduced clause where the subject of the participle is the same as the subject of the main clause ('you'). It functions similarly to 'while you were walking to school'.
中文： 本句使用了分词从句（'walking to school'）作为状语修饰语。这是一种简化的从句结构，其中分词的逻辑主语与主句的主语（'you'）相同。其功能相当于 'while you were walking to school'（当你走路去学校时）。
What did you listen to walking to work, John?
约翰，你走路去上班的路上听了什么？
EN： The past simple question structure 'What did you + verb' is used to ask about completed actions in the past. 'Did' is the auxiliary verb, and 'see' is the base form of the main verb.
中文： 一般过去时的疑问句结构「What did you + 动词原形」用于询问过去已完成的动作。在此结构中，「did」是助动词，「see」则是主要动词的原形。
What did you buy at the market?
你在市场买了什么？
EN： In English-speaking countries, walking to school is a common daily routine for many children and teenagers. Asking friendly, open-ended questions about the commute is a typical way parents, teachers, or friends start a casual conversation.
中文： 在英語系國家，走路去學校是許多兒童和青少年的日常生活的一部分。對於通勤路上的見聞進行友善且開放式的提問，是家長、老師或朋友之間開啟日常閒聊的典型方式。
EN： Present Participle Clause (分詞構句): Used to reduce an adverbial clause when the subject of both clauses is the same. 'Turning the corner' is short for 'When I turned the corner'. It describes an action happening at the same time as, or immediately before, the main action.
中文： 现在分词短语（分词构句）：当两个从句的主语相同时，可用于简化副词从句。「Turning the corner」是「When I turned the corner」的简化版，用来描述与主句动作同时或紧接在主句动作之前发生的行为。
Opening the door, she saw a package on the floor.
打开门时，她看到地上有一个包裹。
EN： Simple Past Tense (簡單過去式): Used to describe completed actions in the past. Here, 'saw' is the past tense of the irregular verb 'see'.
中文： 一般过去时：用于描述过去已完成的动作。在此处，「saw」是不规则动词「see」的过去式。
We saw a beautiful rainbow yesterday.
我们昨天看到了一道美丽的彩虹。
EN： In many Western cities, street artists (buskers, painters, living statues) are a common and celebrated part of urban culture, often requiring official permits to perform or display their art in public spaces like corners or squares.
中文： 在許多西方城市中，街頭藝人（包括街頭樂手、畫家、行動藝術家等）是都市文化中非常普遍且受歡迎的一部分。他們通常需要在公共場所（如街角或廣場）取得官方許可證才能進行表演或展示藝術。
EN： Participle Clauses (Present Participle): Used to express a reason, cause, or simultaneous action. 'Feeling curious' is a shortened form of 'Because I felt curious'. The subject of the participle clause must be the same as the subject of the main clause (I).
中文： 分词从句（现在分词）：用于表示原因、理由或同时发生的动作。'Feeling curious' 是 'Because I felt curious'（因为我感到好奇）的简化形式。分词从句的主语必须与主要从句的主语（I）一致。
Feeling tired, she went to bed early.
感到疲倦，她很早就上床睡觉了。
EN： Stop + Infinitive vs. Stop + Gerund: 'Stop to do something' means to pause an ongoing activity in order to do a new action. In contrast, 'stop doing something' means to end or quit an ongoing action.
中文： Stop + 不定式 与 Stop + 动名词的差异：'Stop to do something' 表示停下手中正在做的事，以便去做另一件事（停下来去做...）。相反地，'stop doing something' 则表示停止、结束正在进行的动作。
On my way home, I stopped to buy some flowers.
在回家的路上，我停下来买了一些花。
EN： Perfect Participle Clause (Having + Past Participle): Used to show that one action happened before another action in the main clause. It functions as an adverbial clause of time or reason, sharing the same subject as the main clause.
中文： 完成分词短语（Having + 过去分词）：用于表示该动作发生在主句动作之前。它在句中作状语，表示时间或原因，且其逻辑主语必须与主句的主语一致。
Having finished her homework, Emma went to bed.
完成了功课后，艾玛就去睡觉了。
EN： Adverb 'instead': Used to indicate that something is done in place of something else. It often appears at the end of a sentence.
中文： 副词「instead」（反而、改为）：用于表示代替某事而做另一件事，通常放在句尾。
There was no coffee, so I drank tea instead.
没有咖啡了，所以我改喝茶。
EN： Past Participle Participle Clause: A participle clause can be used to express a reason or condition. When the subject of the main clause ('the crowd') undergoes the action in the participle clause (passive voice), we use a past participle (V-ed) to start the clause. It is a shortened form of 'Because they were excited by the music...'.
中文： 过去分词引导的分词构句：分词构句可用于表示原因或状态。当主句的主语（the crowd）与分词动作的关系为被动时，会使用过去分词（V-ed）开头。此句为 'Because they were excited by the music...' 的简化版。
Frightened by the loud noise, the cat hid under the bed.
被巨大的噪音吓到，那只猫躲到了床底下。
EN： Phrasal Verb 'clap along': This phrasal verb means to clap your hands in time with music that is being played or sung by others.
中文： 短语动词 'clap along'：这个短语动词意为「跟着（音乐或他人的歌声）一起拍手、合着节拍拍手」。
The audience started to clap along with the beat.
观众开始跟着节奏一起拍手。
EN： Adjective clause reduction (adjectival phrase). When the subject of the main clause and the subordinate clause is the same, the subject and the verb 'to be' can be omitted, leaving only the adjectives (Tired but happy) at the beginning of the sentence to describe the subject's state.
中文： 形容词从句简化（形容词短语）。当主句与从属从句的主语相同时，可以省略主语与 be 动词，仅保留形容词（Tired but happy）置于句首，用来修饰主语的状态。
Afraid of the dark, the child left the light on.
因为怕黑，这孩子一直开着灯。
EN： The coordinating conjunction 'but' is used to connect two contrasting adjectives ('tired' and 'happy') that describe the simultaneous, yet contrasting, feelings of the subject.
中文： 并列连词「but」用于连接两个具对比性质的形容词（tired 与 happy），用以描述主语同时存在但互相比较的感受。
The task was difficult but rewarding.
这项任务虽然困难，但很有回报。
EN： In Western culture, outdoor activities like hiking are highly popular as a way to connect with nature and de-stress. Expressing a mix of physical exhaustion and mental satisfaction ('tired but happy') is a very common and positive sentiment shared after completing such physical challenges.
中文： 在西方文化中，健行（hiking）等戶外活動是非常受歡迎的親近自然與紓壓方式。在完成這類體力挑戰後，表達身體疲憊但內心滿足（tired but happy）是一種非常常見且積極的情感分享。
EN： Present Participle Clause (Participle Construction): A participle clause can be used to express a reason, time, or condition, sharing the same subject as the main clause. To make a participle clause negative, place 'not' directly before the participle (e.g., 'Not wanting...'). This structure is common in written English and formal speech to make sentences more concise.
中文： 现在分词引导的状语从句（分词构句）：分词从句可用于表示原因、时间或条件，其逻辑主语与主句主语相同。若要将分词从句改为否定，需将「not」直接置于分词之前（例如「Not wanting...」）。此结构常见于书面英语与正式口语中，能使句子更为精简。
Not knowing the answer, he remained silent.
因为不知道答案，他保持沉默。
EN： Infinitive of Purpose: The to-infinitive (e.g., 'to be late') is used to express purpose or intention, answering the question 'why?'. In this sentence, 'wanting' is followed by the to-infinitive 'to be late' as its object.
中文： 不定式表示目的或对象：动词不定式（如「to be late」）可用于表示目的、意图或作为特定动词（如 want）的宾语。在本句中，「to be late」作为现在分词「wanting」的宾语，表示「不想（迟到）」的内容。
She woke up early to catch the first train.
她早起是为了赶上第一班火车。
EN： In English-speaking academic and professional environments, punctuality is highly valued. Arriving late to a class or meeting is often seen as disrespectful. Therefore, phrases expressing the rush to avoid being late (like 'hurried to class' or 'rushed to a meeting') are very common in daily conversations.
中文： 在英語系的學術與職場環境中，準時（punctuality）被視為非常重要的美德。上課或開會遲到通常會被認為是不禮貌的行為。因此，日常對話中非常頻繁地會使用到表達為了避免遲到而匆忙趕路的片語（例如「hurried to class」或「rushed to a meeting」）。
EN： Participle Clause (Past Participle): Used to reduce an adverbial clause when the subject of both clauses is the same. The past participle ('Inspired') is used because the subject ('I') receives the action (passive meaning: 'I was inspired').
中文： 分词构句（过去分词）：当两个从句的主语相同时，可用于简化状语从句。此处使用过去分词（Inspired），是因为主语（I）与该动词为被动关系（即“我被启发”）。
Encouraged by his teacher, Tom decided to apply for the art school.
受到老师的鼓励，汤姆决定申请艺术学校。
EN： Simple Past Tense: Used to describe completed actions in the past. Here, 'took' is the past tense of the irregular verb 'take'.
中文： 一般过去时：用于描述过去已完成的动作。在此处，“took”是动词“take”的过去式。
EN： Participle Clauses (Present Participle): A participle clause can be used to express reason, time, or condition. Here, 'Working together' is a present participle clause (V-ing) that functions as an adverbial clause, sharing the same subject ('we') as the main clause. It explains how or why the action in the main clause happened.
中文： 分词从句（现在分词）：分词从句可用于表示原因、时间或条件。在此句中，「Working together」是一个现在分词从句（V-ing），作状语从句使用，其逻辑主语与主要从句的主语（we）相同，用来解释主要从句动作发生的方式或原因。
Feeling tired, she went to bed early.
因为觉得累了，她很早就上床睡觉了。
EN： Adverbs of Manner: The word 'fast' is used here as an adverb of manner modifying the verb 'solved'. Unlike many adverbs that end in '-ly', 'fast' has the same form for both its adjective and adverb states.
中文： 方式副词：单词「fast」在此处用作方式副词，修饰动词「solved」。与许多以「-ly」结尾的副词不同，「fast」的形容词和副词形式相同。
He drives fast but safely.
他开车很快但很安全。
EN： The sentence begins with a past participle clause ('Described that way'), which is a type of participial phrase. It functions as an adverbial clause of condition or concession, meaning 'If it is described that way'. The past participle 'Described' is used because the subject of the main clause ('chores') receives the action of being described (passive voice).
中文： 句子开头的过去分词短语「Described that way」是一种分词构句，在此作副词从句使用，表示条件或让步，意为「如果被那样描述的话」。使用过去分词「Described」是因为主句的主语「chores（家务）」与该动作为被动关系（家务是被描述的）。
Seen from a distance, the rock looks like a human face.
从远处看，那块岩石看起来像一张人脸。
EN： The verb 'sound' is a linking verb (copular verb) used to describe sensory impressions. It is followed directly by an adjective ('fun') rather than an adverb, to describe the state or quality of the subject.
中文： 动词「sound（听起来）」是一个系动词，用于描述感官印象。其后直接接形容词「fun（有趣的）」而非副词，用来修饰并描述主语的状态或特征。
Your plan sounds wonderful.
你的计划听起来很棒。
EN： In English-speaking cultures, 'chores' typically refer to routine household tasks like washing dishes, vacuuming, or taking out the trash. These are universally seen as boring or tedious, which is why the speaker notes that describing them in a certain way makes them surprisingly sound 'fun'.
中文： 在英語系國家中，「chores」通常指日常家務瑣事，如洗碗、吸地或倒垃圾。這些事普遍被認為是枯燥乏味的，因此說話者才會強調，經過某種方式的描述後，連這些瑣事竟然也「聽起來很有趣」。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 遮蔽处、避难所
在本文中： 探索、探访
在本文中： 宁静、和平
在本文中： 问候、打招呼
在本文中： 平凡的、普通的
在本文中： 好奇的
在本文中： 受到启发的、受到鼓舞的
在本文中： 日常杂务、琐事
片语包含类型标示、双语定义、用法说明和例句。
To think about or reflect on something that happened in the past.
回顾、回想
A new, objective, or different perspective on something.
崭新的视角、全新的眼光
To stop sleeping and become aware and active.
醒来、唤醒