EN： The Present Simple tense is used here with the auxiliary verb 'do' to form a question about a current state of memory. 'Remember' is a stative verb, which means it is rarely used in continuous tenses.
中文： 这里使用一般现在时（Present Simple）配合助动词「do」来询问目前的记忆状态。「remember」（记得）是一个状态动词（stative verb），通常不使用进行时。
Do you know where the library is?
你知道图书馆在哪里吗？
EN： The past participle 'lost' is used as an adjective modifying the noun 'dog' to describe its state (having gone missing).
中文： 过去分词「lost」（走失的/遗失的）在此作形容词使用，修饰名词「dog」，用来描述该只狗的状态（处于走失状态）。
She found a lost wallet on the street.
她在街上捡到了一个遗失的皮夹。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作。
I was reading a book when the phone rang.
电话响起时，我正在看书。
EN： The conjunction 'when' is used to introduce a shorter, sudden action (in the Simple Past tense) that interrupts a longer, ongoing action (in the Past Continuous tense).
中文： 连接词「when」用于引导一个较短、突然发生的动作（使用一般过去时），该动作打断了另一个正在进行中、较长的动作（使用过去进行时）。
We were watching TV when the power went out.
我们正在看电视时，停电了。
EN： The Past Continuous Tense (was/were + verb-ing) is used to describe an action that was in progress at a specific moment in the past. In this sentence, 'was barking' shows an ongoing action happening in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作。在本句中，「was barking」（正在吠叫）表示过去某个时刻正在持续发生的动作。
The dog was sleeping under the table when I arrived.
我到达时，那只狗正在桌子底下睡觉。
EN： The preposition 'near' is used to indicate close proximity to a physical object or location. It is followed directly by a noun phrase (e.g., 'near the park bench') without the word 'to'.
中文： 介词「near」用于表示空间上靠近某个实体物体或地点。其后直接接名词短语（例如「near the park bench」），不需要加上「to」。
She sat near the window to get more light.
她坐在窗户附近以获得更多光线。
EN： The conjunction 'while' is used to introduce a longer background action in the past continuous tense (was/were + verb-ing), which is often interrupted by a shorter action in the simple past tense.
中文： 连接词「while」（当……时候）用来引导一个在过去持续进行的背景动作（使用过去进行时 was/were + 动词-ing），这个动作通常会被另一个发生在过去的短暂动作（使用一般过去时）所中断。
While I was cooking dinner, the phone rang.
当我正在做晚餐时，电话响了。
EN： The phrasal verb 'run away' means to escape or leave suddenly. In the past tense, 'run' changes to the irregular form 'ran'.
中文： 短语动词「run away」意思是逃跑或突然离开。在过去时中，「run」要改为不规则变化形式「ran」。
The cat ran away when it saw the dog.
那只猫看到狗时就跑掉了。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific point in the past. In this sentence, 'was driving' sets the background scene.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作。在本句中，「was driving」（当时正在开车）设定了故事发生的背景。
I was walking home when it started to rain.
我当时正走路回家，这时突然开始下雨了。
EN： The coordinating conjunction 'so' is used to introduce a clause showing the result or consequence of the preceding statement.
中文： 并列连词「so」（所以）用于引导一个表示前面陈述之结果或影响的从句。
It was very cold, so we stayed indoors.
天气非常冷，所以我们待在室内。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past or over a continuous period in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去特定时间点或过去某段持续时间内正在进行的动作。
They were playing tennis all afternoon.
他们整个下午都在打网球。
EN： The preposition 'for' is used to indicate the duration of an action or state, showing how long it lasted.
中文： 介词「for」用于表示动作或状态持续的时间长度，显示该情况维持了多久。
She studied English for three years.
她学了三年的英文。
EN： The adverb 'finally' is used as a sentence modifier (or transition word) at the beginning of a sentence to introduce the last point, result, or event in a series, often after a long time or delay. It is typically followed by a comma.
中文： 副词「finally」（最后）常作为句子修饰语（或过渡词）放在句首，用来引出一系列事件中的最后一个点、结果或事件，通常表示经历了一段时间或延迟之后。在书写时，其后通常会加上逗号。
Finally, we reached the top of the mountain.
最后，我们到达了山顶。
EN： The prepositional phrase 'under a car' acts as an adverbial of place, modifying the verb 'found' to specify the exact location where the action occurred.
中文： 介词短语「under a car」（在一辆车子底下）在此作为地点状语，修饰动词「found」（找到），用以明确指出该动作发生的具体位置。
The cat is sleeping under the table.
猫咪正在桌子底下睡觉。
EN： The coordinating conjunction 'so' is used to connect two independent clauses, showing a cause-and-effect relationship. The first clause ('It was so scared') is the cause, and the second clause ('I gave it a hug') is the result.
中文： 对等连接词「so」（所以）用于连接两个独立分句，表示因果关系。第一个分句（它那时非常害怕）是原因，第二个分句（我抱了它一下）是结果。
It was raining, so we stayed indoors.
那时正在下雨，所以我们待在室内。
EN： The phrase 'give someone/something a hug' is a common collocated expression meaning to hug someone. It uses the ditransitive verb 'give' followed by an indirect object ('it') and a direct object ('a hug').
中文： 短语「give someone/something a hug」是一个常见的搭配词，意思是拥抱某人/某物。它使用双宾语动词「give」，后面接间接宾语（it）和直接宾语（a hug）。
She gave her mother a warm hug before leaving.
她在离开前给了母亲一个温暖的拥抱。
EN： In English-speaking cultures, giving a dog a 'hug' or showing physical affection is a very common way to comfort a frightened pet. It reflects the strong bond and empathy people feel towards domestic animals, often treating them as family members.
中文： 在英語系國家中，給予狗狗「擁抱」或進行肢體安撫是安撫受驚寵物非常常見的方式。這反映了人們對家養動物深厚的感情與同理心，通常會將牠們視為家庭成員般對待。
EN： Adverbial clauses of time are introduced by subordinating conjunctions like 'before' or 'after'. When the adverbial clause comes first, it is separated from the main clause by a comma.
中文： 时间状语从句由从属连接词（如 'before' 或 'after'）引导。当状语从句放在句首时，需要用逗号与主句隔开。
Before we went to bed, we brushed our teeth.
在我们上床睡觉之前，我们刷了牙。
EN： The verb 'feed' is a ditransitive verb, which can take an indirect object (the recipient, 'it') and a direct object (the thing given, 'a small meal'). In the past tense, 'feed' becomes 'fed'.
中文： 动词 'feed'（喂食）是双宾语动词，可以接间接宾语（接受者，如 'it'）与直接宾语（给予的事物，如 'a small meal'）。'feed' 的过去式为 'fed'。
She fed the cat some milk.
她喂了猫咪一些牛奶。
EN： The phrase 'After that' is a transitional adverbial phrase used to indicate chronological order, meaning 'following the event just mentioned.' It is commonly placed at the beginning of a sentence to connect ideas smoothly.
中文： 「After that」（在那之后）是一个用来表示时间顺序的过渡性副词短语，意思是「在刚才提到的事件之后」。它通常放在句首，用来流畅地连接前后的想法。
After that, we went to have dinner.
在那之后，我们去吃了晚餐。
EN： The word 'online' is used here as an adverb meaning 'on the internet.' Adverbs of place or manner like 'online' typically appear after the direct object ('its owner') in a sentence.
中文： 「online」在此处用作副词，意思是「在网络上」。像「online」这样表示地点或方式的副词，在句子中通常放在直接宾语（「its owner」）之后。
She bought the tickets online.
她在网络上买了票。
EN： In many English-speaking countries, social media platforms and local community websites (like Facebook groups or Nextdoor) are highly popular and effective tools for reuniting lost pets with their owners.
中文： 在許多英語系國家，社群媒體平台和地區社區網站（例如 Facebook 社團或 Nextdoor）是幫助走失寵物與主人重逢非常流行且有效的工具。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific point in the past. In this sentence, 'was crying' shows an ongoing action in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作。在本句中，「was crying」（正在哭泣）表示过去持续发生的动作。
The children were playing in the garden when it started to rain.
开始下雨时，孩子们正在花园里玩耍。
EN： The preposition 'with' can be used to express the cause or reason for an emotion or physical state, meaning 'because of' or 'filled with'.
中文： 介词「with」可用于表示某种情绪或生理状态的原因，意思是「因为……」或「充满了……」
She was shaking with anger.
她气得全身发抖。
EN： In English-speaking cultures, pets are often considered full members of the family. The intense emotional reaction of the owner ('crying with happiness') highlights the deep bond between people and their pets, and the immense relief of finding a lost animal.
中文： 在英語系國家中，寵物通常被視為家庭的正式成員。主人「喜極而泣」（crying with happiness）的強烈情感反應，凸顯了人與寵物之間深厚的情感連結，以及找回失蹤寵物時無比寬慰的心情。
EN： The coordinating conjunction 'but' is used to connect two contrasting ideas. In this sentence, it connects 'a long day' (which implies tiredness or difficulty) with 'a happy ending' (which is positive). Note that 'was' is omitted in the second clause ('but [it was] a happy ending') to avoid repetition, which is a common feature of ellipsis in English.
中文： 对等连接词「but」（但是）用于连接两个对比的观点。在本句中，它将「a long day」（漫长的一天，暗示疲惫或困难）与「a happy ending」（快乐的结局，属正面）连接起来。请注意，后半句省略了「it was」（但[那是]一个快乐的结局）以避免重复，这是英语中常见的省略现象。
It was a difficult test, but a great learning experience.
那是一场艰难的考试，但却是一次极佳的学习经验。
EN： The phrase 'a long day' is a common English idiom used to describe a day that was busy, tiring, or full of challenging events, rather than literally referring to the number of hours.
中文： 短语「a long day」是常用的英文惯用语，用来形容忙碌、令人疲惫或充满挑战的一天，而非字面指时间长度上的「长」。
After a long day at work, I just want to go to sleep.
在工作了漫长而疲惫的一天后，我只想去睡觉。
EN： The phrase 'a happy ending' is deeply rooted in storytelling traditions (like fairy tales). In everyday English, speakers often use this narrative term to describe real-life situations that resolved well after some difficulty, showing an optimistic outlook.
中文： 「a happy ending」（快樂的結局）這個片語深植於故事創作傳統（如童話故事）。在日常英語中，人們經常借用這個敘事術語來形容現實生活中經歷波折後得到圓滿解決的情況，展現出樂觀的心態。
EN： The simple past tense is used to describe completed actions in the past. Regular verbs like 'start' form the past tense by adding '-ed' ('started').
中文： 一般过去时用于描述过去已经完成的动作。像 'start'（开始）这样的规则动词，通过在词尾加上 '-ed' 来形成过去式（'started'）。
The movie started at eight o'clock yesterday.
电影昨天在八点钟开始了。
EN： The preposition 'like' is used here to mean 'similar to' or 'in the same way as', comparing the subject to a noun phrase.
中文： 介词 'like' 在此处表示「像……一样」或「以与……相同的方式」，用来将主语与后面的名词短语进行比较。
She sings like an angel.
她唱歌像天使一样。
EN： Starting a story with 'It started like any normal day...' is a classic narrative hook in English. It sets a peaceful baseline, signaling to the listener that something unexpected or exciting is about to happen.
中文： 以「It started like any normal day...」（這天開始得就像任何平凡的一天一樣……）作為故事的開頭，是英文中經典的敘事手法。它建立了一個平靜的基準線，暗示聽眾接下來即將發生意想不到或令人興奮的事情。
EN： The past continuous tense ('was reading') is used with 'while' to describe a longer background action that was in progress when a shorter, completed action ('heard') interrupted it in the past simple tense.
中文： 过去进行时（was reading）与连接词「while」（当……时）连用，用来描述过去某个正在进行的持续性背景动作，而此动作被另一个发生在过去的短暂动作（heard，一般过去时）所中断。
While I was cooking dinner, the phone rang.
当我正在做晚餐时，电话响了。
EN： The verb 'hear' is a sensory verb (verb of perception) followed by an object and a present participle (verb-ing) to describe an action in progress that was heard.
中文： 感官动词「hear」（听见）后面接宾语（宾格）和现在分词（动词-ing），用来描述听见某个正在进行中的动作或状态。
We heard someone knocking on the door.
我们听到有人在敲门。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past. In this sentence, 'was running' describes the ongoing background action of the dog.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去特定时间点正在进行的动作。在本句中，「was running」描述了这只狗当时正在进行的背景动作。
The children were playing in the garden when it started to rain.
当开始下雨时，孩子们正在花园里玩耍。
EN： The linking verb 'look' is followed by an adjective (like 'scared') to describe the subject's appearance or state. In this sentence, 'looking' is part of the parallel past continuous structure (was running... and [was] looking).
中文： 系动词「look」（看起来）后面接形容词（如「scared」），用来描述主语的外观或状态。在本句中，「looking」是平行过去进行时结构（was running... and [was] looking）的一部分。
She looked tired after the long meeting.
在漫长的会议结束后，她看起来很疲倦。
EN： The use of the adverb 'clearly' to modify the adjective 'lost'. Adverbs of manner or certainty often appear before adjectives to add emphasis or indicate the speaker's level of certainty.
中文： 副词「clearly」（显然地）用来修饰形容词「lost」（迷路的）。表示说话者确定程度的副词通常会放在形容词前面以示强调。
She was obviously tired after the long flight.
在长途飞行后，她显然累了。
EN： The past simple tense of the linking verb 'be' (was) combined with the subject complement 'lost' (acting as an adjective) to describe a past state.
中文： 使用系动词「be」的过去简单式（was），搭配主语补语「lost」（在此作形容词用），用来描述过去的某种状态。
The keys were lost for two days.
钥匙丢了两天。
EN： The verb 'begin' can be followed by an infinitive ('to' + verb) to indicate starting an action. In the past tense, 'begin' becomes the irregular form 'began'.
中文： 动词「begin」（开始）后面可以接不定式（to + 动词）来表示开始进行某个动作。在过去时中，「begin」会变成不规则变化动词「began」。
She began to read her new book.
她开始阅读她的新书。
EN： The phrasal verb 'search for' means to look for someone or something carefully. 'For' is a preposition that introduces the object being sought.
中文： 短语动词「search for」意思是仔细寻找某人或某物。介词「for」用来引出所寻找的目标对象。
They are searching for the lost keys.
他们正在寻找遗失的钥匙。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress in the past, which is often interrupted by a shorter action in the Past Simple tense (introduced by 'when').
中文： 过去进行时（was/were + 动词-ing）用于描述过去正在进行的动作，而这个动作通常会被另一个发生在过去一般时（由 'when' 引导）的短暂动作所中断。
They were watching TV when the phone rang.
当电话响起时，他们正在看电视。
EN： The preposition 'on' is used to indicate position on a surface or attached to an object, such as a collar around an animal's neck.
中文： 介词 'on' 用于表示在某个表面上或附着于某个物体上，例如附着在动物脖子上的项圈上。
There is a name tag on the dog's collar.
狗的项圈上有一个名字标签。
EN： The coordinating conjunction 'and' is used to connect two independent clauses (complete sentences) of equal importance. In this sentence, it links 'We called the number' and 'finally the owner came' to show a chronological sequence of events.
中文： 并列连词「and」用于连接两个具有同等重要性的独立从句（完整句子）。在本句中，它将「We called the number」与「finally the owner came」连接起来，以表示事件发生的先后顺序。
She opened the door, and the dog ran out.
她打开了门，狗就跑了出去。
EN： The adverb 'finally' is used to introduce an event that happens after a long time or after a series of other events. It can be placed before the verb or at the beginning of a clause for emphasis.
中文： 副词「finally」（最后、终于）用于引出在一段很长的时间或一连串事件之后发生的事情。它可以放在动词前面，或放在从句的开头以示强调。
After three hours of searching, we finally found the keys.
经过三个小时的寻找，我们终于找到了钥匙。
EN： The 'so... that...' structure is used to express cause and effect. 'So' is followed by an adjective or adverb to show the degree of a quality, and 'that' introduces a clause that explains the result or consequence.
中文： 「so... that...」（如此……以至于……）结构用于表示因果关系。「so」后面接形容词或副词以表示某种特质的程度，而「that」引导的从句则解释其所带来的结果或影响。
The movie was so boring that I fell asleep.
那部电影太无聊了，以至于我睡着了。
EN： 'Each of' is used to refer to every individual member of a group of two or more people or things. It is followed by a plural noun or pronoun, but the meaning focuses on the individuals separately.
中文： 「each of」（……中的每一个）用于指代两个或两个以上人或事物群体中的每一个成员。其后接复数名词或代词，但语义上强调各个独立的个体。
She gave a gift to each of the children.
她给了每个孩子一份礼物。
EN： In many English-speaking cultures, hugging is a common way to express deep gratitude or relief, especially in emotional situations like finding a lost pet. It shows warmth and connection, though the level of physical contact can vary depending on personal boundaries.
中文： 在許多英語系國家中，擁抱是表達深切感激或如釋重負的常見方式，特別是在像找到迷失寵物這樣情感激動的時刻。這展現了溫暖與人際連結，不過肢體接觸的程度仍會因個人界線而有所不同。
EN： The conjunction 'before' is used to introduce a subordinate clause of time, indicating that the action in the main clause ('we fed the dog...') happened prior to the action in the 'before' clause ('we said goodbye'). When the 'before' clause starts the sentence, a comma is required.
中文： 从属连接词「before」（在……之前）用于引导时间状语从句，表示主句的动作（我们喂了那只狗……）发生在「before」从句的动作（我们说再见）之前。当「before」引导的从句放在句首时，后面必须加上逗号。
Before we went to bed, we brushed our teeth.
在我们上床睡觉之前，我们刷了牙。
EN： The verb 'feed' is a ditransitive verb, which can take two objects: an indirect object (the recipient, 'the dog') and a direct object (the thing given, 'one last treat'). The pattern is 'feed + indirect object + direct object'.
中文： 动词「feed」（喂食）是双宾语动词（授与动词），后面可以接两个宾语：间接宾语（接受者，此处为「the dog」）与直接宾语（给予的物品，此处为「one last treat」）。句型结构为「feed + 间接宾语 + 直接宾语」。
She fed her cat some fresh fish.
她喂了她的猫一些新鲜的鱼。
EN： In English-speaking cultures, giving a dog a 'treat' (a small piece of food given as a reward or expression of affection) is a very common way to bond with, calm, or reward pets. It shows a high level of care and empathy towards animals.
中文： 在英語系國家中，給狗狗「treat」（零食，通常作為獎勵或表達愛意的小點心）是與寵物建立感情、安撫牠們或給予獎勵的非常普遍的方式。這展現了對動物的高度關懷與同理心。
EN： Adjective Clause (Relative Clause): An adjective clause is used to modify a noun. In this sentence, 'I will never forget' is an adjective clause modifying the noun 'afternoon'. The relative pronoun 'that' or 'which' is omitted because it acts as the object of the verb 'forget'.
中文： 关系从句（形容词从句）：用来修饰名词。在本句中，「I will never forget」是一个关系从句，用来修饰名词「afternoon」（下午）。这里省略了关系代词「that」或「which」，因为它在从句中担任动词「forget」的宾语。
This is a book I will always treasure.
这是一本我会永远珍惜的书。
EN： The Adverb 'never' with Future Tense: 'Never' is an adverb of frequency used to express that something will not happen at any time. When used with the modal verb 'will', 'never' is placed between 'will' and the main verb (will + never + base verb).
中文： 副词「never」与将来时的搭配：副词「never」（从不、绝不）用来表示某事在任何时候都不会发生。与助动词「will」连用时，「never」要放在「will」与主要动词之间（will + never + 动词原形）。
I will never forget your kindness.
我永远不会忘记你的善意。
EN： The phrase 'an afternoon I will never forget' is a common idiomatic way in English to express deep gratitude or nostalgia about a memorable event. It highlights the emotional impact of a simple day.
中文： 「an afternoon I will never forget」（我永遠不會忘記的下午）是英文中常用來表達對某個難忘事件深切感激或懷念的慣用語。它強調了平凡的一天所帶來的深刻情感影響。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific moment in the past. In this sentence, 'what were you doing' asks about the ongoing activity.
中文： 过去进行时（was/were + 现在分词）用于描述在过去某个特定时间点正在进行的动作。在本句中，「what were you doing」询问的是当时正在持续进行的活动。
What were you watching on TV at 8 PM yesterday?
昨天晚上八点你正在看电视上的什么节目？
EN： The conjunction 'when' is used to introduce a shorter, completed action (in the Simple Past tense) that interrupts or occurs during a longer ongoing action (in the Past Continuous tense).
中文： 连接词「when」用于引导一个较短、已完成的动作（使用一般过去时），该动作通常会中断或发生在另一个较长且正在进行的动作（使用过去进行时）之中。
I was sleeping when the phone rang.
电话响的时候我正在睡觉。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific moment in the past. In this sentence, 'was reading' shows the background activity that was happening when another event occurred.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作。在本句中，「was reading」（那时正在阅读）展示了另一个事件发生时正在进行的背景活动。
I was writing an email when the phone rang.
电话响的时候，我那时正在写一封电子邮件。
EN： Prepositional phrases of place ('on a bench' and 'near the gate') are used to specify location. In English, we often stack these phrases from the more specific/immediate location ('on a bench') to the larger/general reference area ('near the gate').
中文： 地点介词短语（「on a bench」与「near the gate」）用于指定位置。在英文中，我们通常会将这些短语依序排列，从较具体/直接的位置（在长椅上）到较大/整体的参考区域（在大门附近）。
She was sitting on a chair near the window.
她那时正坐在窗户旁的椅子上。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去特定时间点正在进行的动作。
I was studying when you called.
你打电话来时，我正在读书。
EN： The conjunction 'while' is used to connect two actions that were happening at the same time in the past, often both in the Past Continuous tense.
中文： 连接词「while」（当……的时候）用于连接两个在过去同时发生的动作，通常这两个动作都会使用过去进行时。
My mother was cooking while my father was watching TV.
我妈妈在做饭时，我爸爸正在看电视。
EN： The Past Continuous Tense (was/were + verb-ing) is used to describe an action that was in progress at a specific point in the past. In questions, the auxiliary verb 'was' or 'were' is placed before the subject.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去特定时间点正在进行的动作。在疑问句中，助动词「was」或「were」要置于主语之前。
Were you sleeping when I called?
我打电话给你的时候，你正在睡觉吗？
EN： The prepositional phrase 'at that time' is commonly used with the past continuous tense to specify the exact moment in the past when the action was happening.
中文： 介词短语「at that time」（在那时候）常用于过去进行时，以明确指出过去动作正在发生时的特定时刻。
I was living in London at that time.
我那时候正住在伦敦。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific point in the past, often interrupted by another shorter action in the Simple Past tense.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间点正在进行的动作，通常会被另一个使用一般过去时的短暂动作所中断。
I was cooking dinner when the phone rang.
当电话响起时，我正在做晚餐。
EN： The conjunction 'when' is used to introduce a sudden, shorter action (in the Simple Past) that interrupts a longer ongoing action (in the Past Continuous).
中文： 连词「when」（当……时）用于引导一个突然发生的、较短暂的动作（使用一般过去时），该动作中断了另一个正在进行的较长动作（使用过去进行时）。
She was sleeping when the package arrived.
包裹送达时，她正在睡觉。
EN： In spoken English, 'you all' (or sometimes 'y'all' in Southern American English) is commonly used to address a group of people, making the plural 'you' more explicit and friendly.
中文： 在英語口語中，「you all」（在美國南方口語中常縮讀為「y'all」）常用來稱呼一群人，這使得複數的「你們」語意更加明確且聽起來更親切。
EN： The past continuous tense of the 'be' verb ('were') combined with the adjective 'worried' describes a continuous emotional state in the past. 'So' is used as an intensifier meaning 'very' or 'extremely'.
中文： 过去式 be 动词（在此为 'were'）搭配形容词 'worried'，用来描述过去某个时间点持续存在的心理状态。'So' 在此作为副词，用来加强语气，表示「如此地」或「非常」。
They were so tired after the long journey.
在长途旅行后，他们感到非常疲惫。
EN： The subordinating conjunction 'before' introduces an adverbial clause of time ('before we found it'), which indicates that the action or state in the main clause happened prior to the action in the subordinate clause. Both clauses use past tenses to maintain temporal consistency.
中文： 从属连接词 'before'（在...之前）引导时间状语从句（'before we found it'），用来表示主句的动作或状态发生在从句动作之前。两个从句皆使用过去时以保持时态一致。
She washed her hands before she ate lunch.
她在吃午餐之前洗了手。
EN： The past continuous tense (was/were + verb-ing) is used here to describe an action that was in progress at a specific moment in the past, emphasizing the ongoing nature of the action.
中文： 过去进行时（was/were + 动词-ing）在此处用于描述过去某个特定时刻正在进行的动作，强调该动作的持续状态。
The cat was sleeping on the sofa when I arrived.
我到达时，那只猫正躺在沙发上睡觉。
EN： The possessive adjective 'its' is used to show ownership or association with an animal or object. It should not be confused with 'it's', which is the contraction for 'it is' or 'it has'.
中文： 所有格形容词「its」用于表示动物或事物的所有权或关联性。请勿与「it's」（it is 或 it has 的缩写）混淆。
The bird built its nest in the tall tree.
那只鸟在高树上筑了它的巢。
EN： In English-speaking cultures, a dog wagging its tail is universally understood as a sign of happiness, friendliness, and relief. Describing the dog wagging its tail at the end of the story signifies a happy resolution and that the dog now feels safe.
中文： 在英語系國家文化中，狗搖尾巴被廣泛理解為快樂、友善和放鬆的象徵。在故事結尾描述狗搖尾巴，象徵著一個快樂的結局，也代表這隻狗現在感到安全了。
EN： The subordinating conjunction 'after' is used to introduce a dependent adverbial clause of time, showing that one action happened before another. When the adverbial clause comes first, it is separated from the main clause by a comma.
中文： 从属连词「after」（在……之后）用于引导时间状语从句，表示一个动作发生在另一个动作之前。当状语从句放在句首时，与主句之间须用逗号隔开。
After we finished our dinner, we went for a walk.
在我们吃完晚餐之后，我们去散步了。
EN： Adverbs of manner (like 'quickly') modify verbs to describe how an action is performed. They are often formed by adding '-ly' to an adjective and typically appear after the verb they modify.
中文： 方式副词（如「quickly」）修饰动词，用来描述动作进行的方式。它们通常是在形容词词尾加上「-ly」形成，一般放在所修饰的动词后面。
She ran quickly to catch the bus.
她快速地跑去搭公交车。
EN： The Past Continuous tense (was/were + verb-ing) is used to describe an action that was in progress at a specific time in the past, or to emphasize the continuous nature of an action over a period in the past.
中文： 过去进行时（was/were + 动词-ing）用于描述在过去某个特定时间正在进行的动作，或强调过去某段时间内动作的持续性与重复性。
They were laughing at his jokes all night.
他们整晚都在因他的笑话而大笑。
EN： The adverbial phrase 'again and again' is used to emphasize that an action is repeated many times.
中文： 副词短语「again and again」意为「一次又一次地」或「不停地」，用于强调某个动作重复发生了许多次。
He tried again and again until he succeeded.
他一次又一次地尝试，直到成功为止。
EN： In English-speaking cultures, repeating 'thank you' or 'thanking someone again and again' is a common way to show deep, sincere gratitude, especially when someone has gone out of their way to help, such as finding a lost pet.
中文： 在英語系國家中，重複說「thank you」或「thanking someone again and again」（不停道謝）是表達深切且真誠感激的常見方式，特別是在他人熱心協助（例如幫忙找到走失的寵物）的時候。
EN： Gerund as Subject: A gerund (verb + -ing) can function as a noun and serve as the subject of a sentence. It is treated as a singular noun, so it takes a singular verb.
中文： 动名词作主语：动名词（动词 + -ing）可以当作名词使用，并在句子中担任主语。动名词主语视为单数，因此后方须接单数动词。
Learning English opens many doors.
学习英文能开启许多机会之门。
EN： Linking Verb 'feel': The verb 'feel' is a linking verb (copular verb) that describes a state or sensation. It is followed by an adjective (like 'good') rather than an adverb to describe the subject.
中文： 系动词 'feel'：动词 'feel'（感觉）是一个系动词，用来描述状态或感觉。其后方接形容词（如 'good'）而非副词，用以修饰主语的状态。
Taking a warm bath feels relaxing.
泡个热水澡让人感觉很放松。
EN： The sentiment 'Helping others always feels good' reflects a universal human value, but in English-speaking cultures, volunteering and community service are highly emphasized from a young age. This phrase is often used to encourage altruism and highlight the personal emotional reward (sometimes called a 'helper's high') of doing good deeds.
中文： 「幫助他人總是讓人感覺很好」這句話反映了普世的人性價值。在英語系國家的文化中，從小就非常強調志願服務與社區參與。這句話常用來鼓勵利他行為，並強調做好事給自己帶來的內心滿足與快樂（有時被稱為「助人的快感」）。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： （狗）吠叫，叫喊
在本文中： 长椅
在本文中： 感到害怕的，恐惧的
在本文中： 主人，物主
在本文中： 快乐，幸福
在本文中： 搜寻，寻找
在本文中： （猫、狗等动物的）项圈
在本文中： 点心，零食（尤指给宠物的奖励）
在本文中： 担心的，发愁的
在本文中： （尾巴）摇摆，摆动
片语包含类型标示、双语定义、用法说明和例句。
To escape from a person, place, or situation.
逃跑，跑开
To weep or shed tears because of extreme joy.
喜极而泣
To try to find someone or something.
寻找，搜寻
The movement of a dog's tail back and forth, usually indicating excitement or friendliness.
摇尾巴