EN： The past perfect tense ('had' + past participle) is used to show that an action was completed before another action in the past. In this sentence, 'had gone' happened before 'reached'.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個時間點或動作之前，就已經完成的動作。在此句子中，「火車開走 (had gone)」發生在「我們到達 (reached)」之前。
By the time the police arrived, the thief had escaped.
當警察到達時，小偷已經逃跑了。
EN： 'By the time' is a subordinating conjunction used to introduce a time clause, meaning 'no later than the moment that'. It is commonly paired with the past perfect in the main clause.
中文： 「By the time」是從屬連接詞，用來引導時間副詞子句，意思是「最遲在...之時」或「當...的時候」。主要子句通常會搭配過去完成式使用。
By the time I finished my homework, everyone had gone to sleep.
當我寫完功課時，大家都已經去睡覺了。
EN： The Past Perfect Tense ('had' + past participle) is used to describe an action that was completed before another action or a specific point in the past. In this sentence, 'had planned' happened before 'that' (the past reference point).
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「had planned」（已經規劃）發生在「that」（那時，即過去的某個時間點）之前。
She had finished her homework before her mother came home.
在她媽媽回到家之前，她就已經寫完功課了。
EN： The prepositional phrase 'for weeks' is used to express duration, indicating how long an action lasted. When paired with the Past Perfect, it shows that the ongoing action had accumulated to that duration prior to the past reference point.
中文： 介系詞片語「for weeks」（好幾週）用於表示持續時間，指出某個動作持續了多久。與過去完成式連用時，它表示在過去某個時間點之前，該持續進行的動作已經累積了那樣的長度。
They had lived in London for years before they moved to Paris.
在搬到巴黎之前，他們已經在倫敦住了好幾年。
EN： The Past Continuous tense ('were waiting') is used to describe an action that was in progress in the past, often interrupted by a shorter action in the Simple Past tense ('offered').
中文： 過去進行式（were waiting）用於描述過去正在進行的動作，通常會被另一個使用簡單過去式（offered）的短暫動作所中斷。
While I was studying, the phone rang.
當我正在讀書時，電話響了。
EN： The conjunction 'while' is used to introduce a longer background action in the past continuous, setting the scene for another event.
中文： 連接詞「while」（當……時）用來引導一個較長的過去進行式背景動作，為另一個事件設定場景。
While they were cooking dinner, the power went out.
當他們在做晚飯時，停電了。
EN： In English-speaking cultures, offering help to strangers who look lost or in distress is a common social norm, often referred to as 'random acts of kindness'. It reflects a community-minded spirit.
中文： 在英語系國家中，主動向看起來迷路或困惑的陌生人提供幫助是一種常見的社會規範，通常被稱為「隨機的善行」（random acts of kindness），這反映了互助的社區精神。
EN： The past perfect tense ('had' + past participle) is used to describe an action that was completed before another action or point in the past. In this sentence, 'had noticed' happened before the past state of 'looked completely lost'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或時間點之前就已經完成的動作。在本句中，「had noticed」（已經注意到）發生在過去的狀態「looked completely lost」（看起來完全迷路）之前。
She had already left when I arrived at the office.
當我到達辦公室時，她已經離開了。
EN： The verb 'look' is a linking verb (copular verb) here, meaning 'to appear'. It is followed directly by an adjective phrase ('completely lost') to describe the subject 'we', rather than an adverb.
中文： 動詞「look」在此處作連繫動詞（linking verb），意思是「看起來、顯得」。其後直接接形容詞片語（completely lost）來修飾主詞「we」，而非接副詞。
The children looked very excited about the trip.
孩子們看起來對這次旅行感到非常興奮。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action in the past. In this sentence, 'had given up' happened before the past action 'spoke'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或時間點之前就已經完成的動作。在本句中，「已經放棄（had given up）」發生在過去的另一個動作「開口說話（spoke）」之前。
By the time the police arrived, the thief had already escaped.
在警方抵達之前，小偷就已經逃跑了。
EN： The phrasal verb 'give up' means to stop making an effort or to resign oneself to failure. When used with a noun like 'hope', it means to lose all expectation of a positive outcome.
中文： 片語動詞「give up」意為停止努力或放棄。當與名詞「hope（希望）」連用時，表示失去對美好結果的所有期盼，即「放棄希望」。
We should never give up our dreams.
我們永遠不應該放棄我們的夢想。
EN： Indirect Speech (Reported Speech): When reporting what someone said in the past, the tenses in the reported clause usually shift backward (backshift). Here, the reporting verb 'told' is in the past tense, so the original spoken statement 'Another train has not left yet' (present perfect) shifts to 'another train had not left yet' (past perfect).
中文： 間接引語（轉述語氣）：當轉述過去某人所說的話時，被轉述子句中的時態通常需要向過去推移（時態回推）。在此句中，主要動詞「told」（告訴）是過去式，因此原本說話時的「Another train has not left yet」（現在完成式）在轉述時轉變為「another train had not left yet」（過去完成式）。
She told me that she had already finished her homework.
她告訴我她已經寫完功課了。
EN： Past Perfect Tense with 'yet': The past perfect tense (had + past participle) is used to describe an action that was completed (or not completed, in the negative) before a specific point in the past. The adverb 'yet' is used in negative sentences to show that something had not happened up to that past moment.
中文： 過去完成式與「yet」的搭配：過去完成式（had + 過去分詞）用於描述在過去某個特定時間點之前已經完成（或在否定句中尚未完成）的動作。副詞「yet」用於否定句中，表示直到過去那個時刻為止，某事尚未發生。
When I arrived, the meeting had not started yet.
當我到達時，會議還沒有開始。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another point or action in the past. Here, 'had never met' emphasizes that up to that specific moment in the past, the experience had not occurred.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個時間點或動作之前已經完成的動作。在這裡，「had never met」強調直到過去那個特定時刻為止，該經驗從未發生過。
She had never seen a glacier before she visited Alaska.
在她造訪阿拉斯加之前，她從未見過冰河。
EN： The structure 'such a/an + adjective + singular countable noun' is used to emphasize the degree of a particular quality.
中文： 「such a/an + 形容詞 + 單數可數名詞」的結構用於強調某種特質的程度（如此……的人/物）。
He is such a talented musician.
他是個如此有才華的音樂家。
EN： The conjunction 'as' is used to describe two actions happening at the same time, often emphasizing that one action is occurring during the course of another.
中文： 連接詞「as」用於描述同時發生的兩個動作，通常強調一個動作是在另一個動作的進行過程中發生的（意為「當……之時」）。
As we walked through the park, it started to rain.
當我們散步穿過公園時，天開始下雨了。
EN： The past continuous tense ('were pounding') is used to describe an ongoing action in the past, showing that the action was in progress at a specific moment.
中文： 過去進行式（「were pounding」）用於描述過去某個特定時間點正在進行的動作，強調該動作的持續狀態。
They were laughing when I entered the room.
當我進入房間時，他們正在大笑。
EN： The phrase 'hearts pounding' is a common physiological description used in English literature and daily speech to vividly convey excitement, fear, or physical exertion.
中文： 「hearts pounding」（心臟劇烈跳動）是英文文學和日常口語中非常常見的生理描寫，用來生動地傳達興奮、恐懼或劇烈身體運動時的緊張感。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action was completed before another action in the past. In this sentence, the doors opened ('had opened') before we caught the train ('caught').
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或時間點之前已經完成的動作。在本句中，車門開啟（had opened）發生在我們趕上火車（caught）之前。
She had already finished her homework when her friends arrived.
當她的朋友到達時，她已經完成了功課。
EN： The conjunction 'just after' is used to emphasize that one event happened immediately following another event.
中文： 連接詞「just after」用於強調某個事件是在另一個事件之後「隨即」或「剛好緊接著」發生。
The rain started just after we stepped inside the house.
我們剛踏進屋子，雨就開始下了。
EN： The past perfect tense ('had' + past participle) is used to describe an action that was completed before a specific point in time or another action in the past. In this context, it emphasizes that the learning of the lesson was completed on that specific past day.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個特定時間點或另一個過去動作之前就已經完成的動作。在此語境中，它強調「學到教訓」這一動作在過去的那一天已經完成。
By the time the meeting started, we had already made our decision.
在會議開始之前，我們就已經做出了決定。
EN： The noun 'lesson' can mean a unit of instruction, but in this context, it refers to an experience or occurrence from which something can be learned (a moral or practical wisdom). It is often paired with the verb 'learn'.
中文： 名詞「lesson」可以指課堂上的「一課」，但在這裡是指從經驗或事件中吸取的「教訓」或「啟示」。它經常與動詞「learn」（學習/吸取）搭配使用。
Losing the game taught them a valuable lesson about teamwork.
輸掉比賽給他們上了關於團隊合作的寶貴一課。
EN： The Past Perfect Tense (had + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this context, it emphasizes that the act of turning the day around occurred prior to the narrator's current perspective of looking back at the events.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在此語境中，它強調「扭轉局面」這一動作發生在敘事者現在回首過去事件之前。
By the time the rain started, we had already set up the tent.
下雨之前，我們就已經搭好了帳篷。
EN： The phrasal verb 'turn something around' means to cause a situation, game, or relationship to change from bad to good, or to become successful.
中文： 片語動詞「turn something around」意思是使局面、比賽或關係扭轉乾坤，由壞變好或走向成功。
The new manager managed to turn the failing company around in just six months.
新經理成功在短短六個月內扭轉了這家瀕臨倒閉的公司。
EN： The concept of 'paying it forward' or the transformative power of a stranger's kindness is a deeply valued theme in English-speaking cultures. Small acts of kindness are often celebrated as having the power to completely change someone's outlook or experience during a difficult day.
中文： 「把愛傳出去」或陌生人善意的轉化力量，是英語系國家文化中非常受重視的主題。微小的善行經常被歌頌為具有徹底改變他人糟糕一天的心境或經歷的力量。
EN： The past perfect tense ('had felt') is used here to describe a state or feeling that existed in the past, prior to another past moment (the moment of remembering, or the conclusion of the event). It emphasizes the depth of the feeling at that specific past time.
中文： 過去完成式（had felt）在此處用於描述過去某個特定時刻之前就已存在並持續的狀態或感受。它強調在過去那個特定時間點上，我們心中所感受到的感激程度。
She still remembered how excited they had been before the concert started.
她仍然記得在音樂會開始前，他們是多麼地興奮。
EN： The noun clause introduced by 'how' ('how grateful we had felt') acts as the direct object of the transitive verb 'remember'. It follows the declarative word order (subject + verb) rather than the question word order.
中文： 由「how」引導的名詞子句（how grateful we had felt）作為及物動詞「remember」的直接受詞。此子句需使用陳述句語序（主詞 + 動詞），而非疑問句語序。
I don't know how busy he had been.
我不知道他之前有多忙。
EN： The Past Perfect Tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this sentence, 'had looked forward to' happened before the past state of 'It was a trip'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「had looked forward to（期盼）」發生在過去狀態「It was a trip（那是一趟旅行）」之前。
She had already finished her homework when her friends arrived.
當她的朋友到達時，她已經做完功課了。
EN： A relative clause starting with 'that' is used to modify a noun (the antecedent). Here, 'that I had looked forward to for months' is a defining relative clause modifying the noun 'trip'. 'That' acts as the object of the preposition 'to'.
中文： 以「that」引導的關係子句用於修飾名詞（先行詞）。在這裡，「that I had looked forward to for months」是一個限定用法關係子句，修飾名詞「trip」。「that」在關係子句中擔任介係詞「to」的受格。
This is the book that I was talking about yesterday.
這就是我昨天提到的那本書。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this sentence, 'had saved' and 'had planned' (with 'had' shared) happened before the trip actually took place.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「had saved（存了錢）」和「[had] planned（規劃了）」發生在旅行實際開始之前。
By the time the taxi arrived, we had already packed our bags.
在計程車到達之前，我們就已經打包好行李了。
EN： When joining two past perfect verbs with 'and', the auxiliary verb 'had' does not need to be repeated for the second verb if the subject remains the same. Here, 'had' applies to both 'saved' and 'planned'.
中文： 當使用對等連接詞「and」連接兩個過去完成式的動詞時，如果主詞相同，第二個動詞前的助動詞「had」可以省略。在此句中，「had」同時修飾「saved」與「planned」。
She had washed the dishes and dried them before leaving.
她在離開前洗好了碗並把它們擦乾了。
EN： The relative clause 'we left' modifies the noun phrase 'the morning'. In English, the relative pronoun 'when' or 'that' can be omitted when it functions as an adverbial or object in the defining relative clause.
中文： 關係子句「we left」修飾名詞片語「the morning」。在英文中，當關係代名詞或關係副詞（如 when 或 that）在限定關係子句中充當狀語或受格時，通常可以省略。
On the day we met, it was raining heavily.
在我們相遇的那天，雨下得很大。
EN： The phrase 'go wrong' is an idiomatic expression meaning to experience problems, fail, or deviate from a plan. 'Go' functions as a linking verb here, followed by the adjective 'wrong'.
中文： 片語「go wrong」是一個習慣用語，意思是「出錯、出狀況、變糟」。這裡的「go」作為連繫動詞（linking verb）使用，後面接形容詞「wrong」作為補語。
If anything goes wrong, please call me immediately.
如果出現任何差錯，請立刻打電話給我。
EN： The Past Perfect Tense ('had' + past participle) is used to show that an action was completed before another action in the past. In this sentence, 'had already departed' happened before the action of 'arrived'.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或時間點之前就已經完成的動作。在本句中，「火車已經出發（had already departed）」發生在「我們到達（arrived）」這個過去動作之前。
By the time the movie started, we had already bought our popcorn.
在電影開始之前，我們就已經買好爆米花了。
EN： The phrase 'By the time' is a subordinating conjunction used to introduce a time clause, meaning 'no later than the moment when'. It is typically followed by a simple past verb when referring to past events, with the main clause using the past perfect.
中文： 「By the time」是一個從屬連接詞，用來引導時間副詞子句，意思是「最遲在...之時」或「到了...的時候」。當描述過去的事情時，該子句通常使用簡單過去式，而主句則使用過去完成式。
By the time she arrived at the party, most guests had left.
在她抵達派對時，大多數的客人都已經離開了。
EN： In English-speaking countries, train schedules are generally expected to be precise. Missing a train due to arriving late is a common travel anxiety. The use of 'departed' is slightly more formal than 'left', often used in official announcements or travel contexts.
中文： 在英語系國家，火車時刻表通常被預期是非常準確的。因為遲到而錯過火車是旅行中常見的焦慮來源。字彙方面，使用「departed」比「left」稍微正式一些，常見於官方廣播或旅行情境中。
EN： The Past Perfect Tense ('had' + past participle) is used to describe an action or state that occurred before a specific point in the past. In this sentence, 'had never felt' emphasizes that up until that moment in the past, they had never experienced such a deep level of disappointment.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個特定時間點之前已經發生或完成的動作或狀態。在本句中，「had never felt」強調在過去的那個時刻之前，他們從未體驗過如此深切的失望感。
By the time she arrived, we had already finished the meeting.
在她到達之前，我們已經結束了會議。
EN： The adverb 'never' is placed between the auxiliary verb 'had' and the main verb (past participle) 'felt' to express absolute negation up to that past point.
中文： 否定副詞「never」（從未）置於助動詞「had」與主要動詞（過去分詞）「felt」之間，用以表達在過去該時間點之前，某事完全沒有發生過。
He had never seen such a beautiful sunset before that trip.
在那次旅行之前，他從未見過如此美麗的日落。
EN： The phrase 'in my/our lives' is a common English idiom used to add extreme emphasis to a superlative or a strong feeling, equivalent to saying 'ever' or 'in all of my experience'.
中文： 片語「in my/our lives」（在我/我們一生中）是英文中常見的習慣用語，用來對最高級或強烈的情感進行極度的強調，相當於中文裡的「有生以來」或「這輩子最...」。
EN： The past continuous tense ('were standing') is used to describe an action that was in progress in the past, often interrupted by another shorter action in the simple past ('approached').
中文： 過去進行式（were standing）用於描述過去某個時間點正在進行的動作，通常會被另一個發生在過去的短暫動作（使用過去簡單式 approached）所中斷。
While we were watching TV, the phone rang.
當我們正在看電視時，電話響了。
EN： The adverb 'kindly' is used to modify the verb 'approached', describing the manner in which the action was performed.
中文： 副詞「kindly」（親切地）用來修飾動詞「approached」（走向/靠近），描述該動作進行的方式。
She smiled kindly at the children.
她對孩子們親切地微笑。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this sentence, 'had seen' indicates his experiences of seeing lost travelers occurred prior to the past timeframe being discussed in the story.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「had seen」表示他看見迷路旅客的經驗，發生在故事所討論的過去時間點之前。
She had already finished her report before the meeting started.
在會議開始之前，她就已經完成了報告。
EN： The preposition 'during' is used to indicate that something happens within a particular period of time. It is followed by a noun phrase (e.g., 'his years of work').
中文： 介系詞「during」（在……期間）用於表示某事發生在特定的時間段內。其後接名詞片語（例如「his years of work」）。
We stayed indoors during the heavy rain.
下大雨期間我們都待在室內。
EN： The past perfect passive voice ('had not yet been canceled') is used to describe an action that was completed (or in this case, not completed) before another action in the past. It is formed with 'had' + 'been' + past participle.
中文： 過去完成式的被動語態（had not yet been canceled）用於描述在過去某個動作或時間點之前，已經完成（或在此處指尚未完成）的動作。其結構為「had」+「been」+ 過去分詞。
The decision had been made before the meeting started.
在會議開始之前，決定就已經做好了。
EN： Noun clauses introduced by 'that' function as the direct object of reporting verbs like 'explain', 'say', or 'think'. The word 'that' can often be omitted in informal speech, but is kept here for clarity.
中文： 由「that」引導的名詞子句，在句中作為「explain（解釋）」、「say（說）」或「think（認為）」等述說動詞的直接受詞。在口語中「that」常可省略，但在此處保留以使語意更清晰。
She explained that the office was closed for the holiday.
她解釋說辦公室因為放假而關閉了。
EN： The past perfect tense ('had lost') is used to describe an action that was completed before another action in the past ('were given').
中文： 過去完成式（had + 過去分詞，如 'had lost'）用於描述在過去某個動作或時間點之前就已經完成的動作。在此句中，『失去座位』發生在『被給予新座位』之前。
By the time the train arrived, we had lost our tickets.
當火車到達時，我們已經弄丟了車票。
EN： The passive voice in the past simple tense ('were given') is used when the focus is on the receiver of the action rather than the doer.
中文： 過去簡單式的被動語態（was/were + 過去分詞，如 'were given'）用於強調動作的接受者（我們），而非動作的執行者（誰給了我們座位）。
They were given a warm welcome when they arrived.
他們抵達時受到了熱烈的歡迎。
EN： The past perfect tense ('had been') is used to describe an action or state that occurred before another action in the past (in this case, before 'realized').
中文： 過去完成式（had + 過去分詞）用於表示在過去某個時間點或動作（此處為「意識到 realized」）之前，就已經發生或持續存在的狀態。
By the time the movie started, we had already bought our popcorn.
在電影開始之前，我們就已經買好爆米花了。
EN： The conjunction 'as' is used here to mean 'while' or 'at the same time that', indicating two actions happening simultaneously in the past.
中文： 連接詞「as」在此處表示「當……的時候」或「與此同時」，用來表示過去同時發生的兩個動作。
As the sun set, the temperature dropped quickly.
當太陽下山時，氣溫迅速下降。
EN： The Past Perfect Tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this sentence, 'had saved' and 'had nearly lost' both refer to events that occurred prior to the main narrative focus of the past trip.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「had saved」（挽救了）與「had nearly lost」（差點錯失）皆表示在過去該次旅行的敘事背景中，更早一步發生的動作或狀態。
By the time we arrived, the train had already left.
在我們到達之前，火車就已經開走了。
EN： A relative clause (adjective clause) can modify a noun. In 'a trip [that/which] we had nearly lost', the relative pronoun 'that' or 'which' is acting as the object of the verb 'lost' and is omitted, which is common in informal and semi-formal English.
中文： 關係子句（形容詞子句）可用於修飾名詞。在「a trip [we had nearly lost]」中，關係代名詞「that」或「which」在子句中擔任動詞「lost」的受格，因此被省略了，這在非正式與半正式英語中非常常見。
The book we read yesterday was very interesting.
我們昨天讀的那本書非常有趣。
EN： The verb 'teach' can take a double object (ditransitive structure) where 'me' is the indirect object and the 'that' clause ('that hope can appear...') acts as the direct object, functioning as a noun clause.
中文： 動詞「teach」（教導）可接雙賓語（雙賓動詞結構），其中「me」是間接賓語，而由「that」引導的子句（that hope can appear...）則作為直接賓語，起名詞子句的作用。
She taught me that hard work always pays off.
她教會了我，努力終究會有回報。
EN： The adverb 'least' is used here to modify the verb 'expect' in a superlative sense, meaning 'at the minimum degree' or 'not at all expected'.
中文： 副詞「least」在此處用於修飾動詞「expect」，具最高級意義，表示「程度最低」或「最意想不到」。
It happened when I least expected it.
它在我最意想不到的時候發生了。
EN： This sentence expresses a common philosophical sentiment in English-speaking cultures: the idea of finding hope or light in dark times, often associated with resilience and optimism.
中文： 這句話表達了英語文化中常見的一種哲理：在黑暗或艱難的時刻尋找希望與光芒，這通常與韌性（resilience）和樂觀主義緊密相連。
EN： The past simple tense of the verb 'to be' (was/were) is used to ask about states or feelings in the past. In questions, the verb 'were' is placed before the subject 'you'.
中文： 過去簡單式的 be 動詞（was/were）用於詢問過去的狀態或感受。在疑問句中，動詞「were」要置於主詞「you」之前。
Why were you so late for the meeting yesterday?
你昨天開會為什麼遲到那麼久？
EN： The demonstrative adjective 'that' is used to refer to a specific time in the past (e.g., 'that morning'), distinguishing it from 'this morning' (which refers to today).
中文： 指示形容詞「that」（那）用於指代過去某個特定的時間（例如「that morning」那一天早上），以區別於「this morning」（今天早上）。
I will never forget the storm that night.
我永遠不會忘記那天晚上的暴風雨。
EN： In English-speaking cultures, asking 'Why were you so upset...?' is a common way to show empathy and open a supportive conversation when you notice a friend was distressed in the past. Adding the person's name at the end (e.g., ', Emma') softens the question and makes it feel more personal and caring.
中文： 在英語系國家中，詢問「Why were you so upset...?」（你那時為什麼那麼難過？）是表達同理心並開啟關懷對話的常見方式。在句尾加上對方的名字（例如「, Emma」）可以緩和語氣，使詢問顯得更具親切感與關懷。
EN： The Past Perfect Tense ('had' + past participle) is used to show that an action was completed before another action in the past. In this sentence, 'had left' happened before 'arrived'.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或時間點之前就已經完成的動作。在本句中，「公車開走 (had left)」發生在「我們抵達 (arrived)」之前。
The movie had already started when we arrived at the theater.
當我們到達電影院時，電影已經開始了。
EN： The subordinating conjunction 'before' is used to connect two events in the past, clarifying the chronological order. The event following 'before' is the later event, usually in the simple past tense.
中文： 從屬連接詞「before（在……之前）」用於連接過去發生的兩個事件，以釐清時間先後順序。接在 before 後面的事件是較晚發生的，通常使用簡單過去式。
She washed her hands before she ate dinner.
她在吃晚餐前洗了手。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action happened before another action in the past. In this sentence, forgetting the ticket ('had forgotten') happened before realizing it ('realized').
中文： 過去完成式（had + 過去分詞）用於表示某個動作在過去的另一個動作之前已經發生。在本句中，「忘記帶車票」（had forgotten）發生在「意識到」（realized）之前。
She realized she had left her keys in the car.
她意識到她把鑰匙留在車上了。
EN： The conjunction 'that' is often omitted in informal English when introducing a noun clause acting as the direct object of verbs like 'realize', 'think', or 'say'. Here, 'I realized [that] I had forgotten...'
中文： 在非正式英語中，當引導名詞子句作為「realize（意識到）」、「think（認為）」或「say（說）」等動詞的直接受詞時，連接詞「that」經常會被省略。本句中為「I realized [that] I had forgotten...」。
I think we need to leave now.
我覺得我們現在該走了。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action in the past. Here, 'had waited' happened before the past action 'came'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或時間點之前就已經完成的動作。在本句中，「已經等待」（had waited）發生在另一個過去動作「到來」（came）之前。
They had already finished dinner before the guests arrived.
在客人到達之前，他們就已經吃完晚餐了。
EN： The conjunction 'before' is used to connect two clauses, indicating that the action in the main clause (Past Perfect) occurred prior to the action in the subordinate clause (Simple Past).
中文： 連接詞「before」（在……之前）用於連接兩個從句，表示主句的動作（過去完成式）發生在從屬子句的動作（簡單過去式）之前。
She had left the office before it started to rain.
在開始下雨之前，她就已經離開辦公室了。
EN： The phrase 'by the time' is a subordinating conjunction used to introduce a time clause. It means 'no later than the moment that' and is commonly used with the past perfect tense in the main clause to show that one action was already completed before another past action occurred.
中文： 「by the time」是一個從屬連接詞，用來引導時間副詞子句，意思是「到了…的時候」或「最遲在…之時」。它常用於主要子句為過去完成式的句子中，用以表示在過去的某個動作發生之前，另一個動作已經完成。
By the time the police arrived, the thief had escaped.
等警察到達時，小偷已經逃跑了。
EN： The past perfect tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past. In this sentence, 'had started' happened before 'sat down'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。在本句中，「表演開始」（had started）發生在「坐下」（sat down）之前。
She had already finished her homework when her mother came home.
當她媽媽回到家時，她已經寫完功課了。
EN： The Past Perfect Tense (had + past participle) is used to describe an action that was completed before a specific point in the past. In this sentence, 'had never seen' indicates that the experience of seeing such heavy traffic had not occurred at any point prior to the past event being discussed.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個特定時間點之前已經完成的動作或經驗。在此句子中，「had never seen」表示在所討論的過去事件之前，從未有過看過如此嚴重塞車的經驗。
She had never traveled abroad before that summer.
在那年夏天之前，她從未出國旅遊過。
EN： The construction 'such + adjective + uncountable noun' is used to emphasize the degree or quality of something. Here, 'such heavy traffic' emphasizes the extreme density of the traffic.
中文： 「such + 形容詞 + 不可數名詞」的結構用於強調某事物的程度或特質。在這裡，「such heavy traffic」強調了交通擁堵的極端嚴重程度。
I have never heard such beautiful music.
我從未聽過如此美妙的音樂。
EN： In English-speaking countries, 'heavy traffic' is the standard collocation to describe congested roads or traffic jams. Using 'big traffic' or 'busy traffic' is grammatically unnatural. Additionally, discussing traffic delays is a very common, relatable icebreaker or excuse for being late in daily conversation.
中文： 在英語系國家中，「heavy traffic」是描述道路擁擠或塞車的標準搭配詞。使用「big traffic」或「busy traffic」在英文習慣上是不自然的。此外，在日常對話中，抱怨交通延誤是一個非常常見、容易引起共鳴的破冰話題，也是遲到時常用的合理解釋。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action was completed before another action in the past. Here, 'had prepared' happened before 'stayed calm'.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或時間點之前已經完成的動作。在此句中，「準備」（had prepared）發生在「保持冷靜」（stayed calm）之前。
She had finished her homework before she went to bed.
她在上床睡覺前已經完成了功課。
EN： The coordinating conjunction 'so' is used to link two independent clauses, where the second clause is the result or consequence of the first.
中文： 對等連接詞「so」（所以）用於連接兩個獨立子句，其中第二個子句是第一個子句的結果或影響。
It was raining, so we decided to stay indoors.
下雨了，所以我們決定待在室內。
EN： The phrase 'stay calm' reflects a highly valued trait in many English-speaking cultures, often associated with the British concept of the 'stiff upper lip'—remaining resolute and unemotional in the face of adversity.
中文： 「stay calm」（保持冷靜）反映了許多英語系國家非常推崇的特質，這常與英國人所說的「stiff upper lip」（堅忍不拔）相呼應，意指在面對逆境時仍能保持堅毅與沉著，不感情用事。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action was completed before another action in the past. In this sentence, 'had stopped' happened before 'continued'.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或時間點之前就已經完成的動作。在本句中，「雨停（had stopped）」發生在「繼續前進（continued）」之前。
After she had finished her homework, she went to bed.
在她寫完功課之後，她就去睡覺了。
EN： The phrasal verb 'continue on' means to keep moving forward or to persist in an activity, often after a brief interruption.
中文： 片語動詞「continue on」意為「繼續前進」或「持續進行某活動」，通常用於短暫中斷之後重新開始。
We rested for a while and then continued on our journey.
我們休息了一會兒，然後繼續我們的旅程。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action or a specific time in the past.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或特定時間點之前就已經完成的動作。
By the time the train arrived, we had already bought our tickets.
在火車到達之前，我們就已經買好票了。
EN： The nominalization pattern 'the + adjective' (e.g., 'the unexpected') is used to represent a class of things or people as a collective noun, meaning 'things that are unexpected'.
中文： 「the + 形容詞」的限定結構（例如 'the unexpected'）可用作名詞，代表某一類事物或群體，在此處意為「意料之外的事物」。
We must prepare for the worst.
我們必須為最壞的情況做好準備。
EN： The phrase 'expect the unexpected' is a common English idiom and proverb. It encourages people to remain flexible and mentally prepared for sudden changes or surprises in life, reflecting a pragmatic and resilient cultural mindset.
中文： 「expect the unexpected」（期待意料之外的事）是英語中非常常見的成語與諺語。它鼓勵人們在生活中保持彈性，隨時做好應對突發狀況或驚喜的心理準備，反映出西方文化中務實且具韌性的處事態度。
EN： The participle phrase 'Looking back' functions as an adverbial modifier, indicating the action of reflecting on the past. It is a shortened form of 'When we look back' or 'As I look back'.
中文： 分詞短語「Looking back」（回首過去）用作副詞性修飾語，表示回顧過去的動作。它是「When we look back」或「As I look back」的簡化形式。
Looking back, I realize how much I have grown.
回首過去，我意識到自己成長了多少。
EN： The past perfect tense ('had changed') is used to describe an action that was completed before a specific point in the past or before another past action.
中文： 過去完成式（「had changed」）用於描述在過去某個特定時間點之前，或在另一個過去動作之前已經完成的動作。
By the time the meeting started, the decision had changed.
在會議開始之前，決定就已經改變了。
EN： The phrase 'Looking back' is a very common transitional device in English storytelling. It signals a shift from chronological narration to reflective commentary, allowing the speaker to share a mature perspective on past events.
中文： 「Looking back」（回首過去）是英文敘事中非常常見的過渡表達。它標誌著從按時間順序敘述轉向反思性評論，讓說話者能夠分享對過去事件更成熟的看法與感悟。
重要單字附有 IPA 發音、定義、例句和互動式測驗。
在本文中： 出發、啟程、駛離
在本文中： 感到失望的
在本文中： 靠近、接近
在本文中： 取消的
在本文中： 感激的、感謝的
在本文中： （心臟）劇烈跳動
在本文中： 意料之外的事物
在本文中： 陌生人
片語包含類型標示、雙語定義、用法說明和例句。
To cause a situation, game, or team to change from bad to good; to make something successful.
好轉、扭轉局面
To feel pleased and excited about something that is going to happen.
期待、盼望
To stop believing that something good will happen or that you will succeed.
放棄希望
To be prepared for any surprise or unusual event, even if it seems unlikely.
做好應對突發狀況的準備、預料意料之外的事