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 closed' 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，「博物館關門（had closed）」發生在「我們到達（arrived）」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 that'. It is commonly paired with the past perfect in the main clause to show sequence.
中文： 片語「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」。它通常與主要子句中的過去完成式搭配使用，以顯示事情發生的先後順序。
By the time she called me, I had left the office.
在她打給我時，我已經離開辦公室了。
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 question form, 'Had' is placed before the subject.
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。在疑問句中，會將助動詞「Had」置於主詞之前。
Had you finished the report before the meeting started?
在會議開始之前，你已經完成報告了嗎？
EN： The word 'before' is used here as an adverb meaning 'at an earlier time' or 'previously', positioned at the end of the sentence to emphasize that the action should have occurred prior to the main past event (arriving at the museum).
中文： 「before」在此處用作副詞，意思是「以前」或「事先」，放在句尾以強調該動作應該在過去的主要事件（到達博物館）之前發生。
EN： In English-speaking countries, 'the hours' is a common shorthand for 'opening hours' or 'business hours' of museums, shops, or restaurants. Checking these in advance is a highly recommended travel habit due to seasonal variations.
中文： 在英語系國家，「the hours」是博物館、商店或餐廳「營業時間（opening hours / business hours）」的常見簡稱。由於當地營業時間常隨季節或節假日變動，行前先確認時間是十分普遍且被建議的旅遊習慣。
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. In this sentence, 'had never been' emphasizes the state of disappointment experienced prior to the end of the 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發生或完成的動作或狀態。在本句中，「had never been」強調在該次旅行結束前的這段時間裡，說話者從未有過如此失望的感受。
By the time we arrived, the museum had closed.
在我們到達之前，博物館就已經關門了。
EN： The structure 'so + adjective + on a trip' is used to express a high degree of an emotion or state experienced during a journey. 'So' acts as an intensifying adverb modifying the adjective 'disappointed'.
中文： 「so + 形容詞 + on a trip」的結構用於表達在旅途中所感受到的強烈情緒或狀態。「so」作為程度副詞，用來修飾形容詞「disappointed」（失望的）。
I had never been so excited on a trip.
我從未在旅行中感到如此興奮。
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 tour had left' happened before 'we reached the gate'.
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，「旅行團已經離開（had left）」發生在「我們到達登機門（reached）」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 that'. It is commonly paired with the past perfect in the main clause to show sequence.
中文： 片語「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」。它通常與主要子句中的過去完成式搭配使用，以顯示事情發生的先後順序。
By the time she arrived at the station, the train had left.
當她到達車站時，火車已經開走了。
EN： In travel contexts, 'the gate' usually refers to an airport departure gate, but in the context of tours or attractions, it can also refer to the main entrance gate of a venue or park. Missing a tour departure due to minor delays is a common travel anxiety shared globally.
中文： 在旅遊情境中，「the gate」通常指機場的登機門，但在旅行團或景點的語境下，它也可以指景區或公園的大門。因為些微的延誤而錯過旅行團的出發時間，是全球旅客共同面臨的常見焦慮。
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。
She had already left when I arrived at the station.
當我到達車站時，她已經離開了。
EN： The prepositional phrase 'by mistake' is used as an adverbial modifier meaning accidentally or without intending to.
中文： 介系詞片語 'by mistake' 用作副詞修飾語，意思是「不小心地」或「無意中地」。
I took your umbrella by mistake.
我不小心拿錯了你的雨傘。
EN： The Past Perfect tense (had + past participle) is used to describe an action that happened before another action or state in the past. In this sentence, 'had walked' happened before the state of being 'tired'.
中文： 過去完成式（had + 過去分詞）用於描述在過去某個動作或狀態之前就已經發生的動作。在本句中，「走路（had walked）」發生在「疲累（tired）」這個過去狀態之前。
She was hungry because she had not eaten lunch.
她那時很餓，因為她沒有吃午餐。
EN： The subordinating conjunction 'because' is used to introduce a clause that gives the reason for the action or state in the main clause.
中文： 從屬連接詞「because（因為）」用於引導一個表示原因的子句，用來解釋主句中動作或狀態發生的原因。
We stayed home because it was raining.
我們留在家裡，因為那時正在下雨。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action was completed before another action or a specific time in the past.
中文： 過去完成式（had + 過去分詞）用於表示在過去某個動作或特定時間點之前，就已經完成的動作。
She had finished her homework before her friends arrived.
在她的朋友到達之前，她就已經寫完功課了。
EN： The conjunction 'before' is used to connect two clauses, indicating that the action in the main clause happened prior to the action in the adverbial clause.
中文： 連接詞「before」（在……之前）用於連接兩個子句，表示主要子句的動作發生在副詞子句的動作之前。
We washed our hands before we ate dinner.
我們在吃晚餐前洗了手。
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 eaten' happened first, and 'found' happened second.
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。在此句子中，「吃完飯 (had eaten)」發生在先，「找到公園 (found)」發生在後。
After she had finished her homework, she watched a movie.
在她寫完功課後，她看了一部電影。
EN： The subordinating conjunction 'after' introduces an adverbial clause of time. When the 'after' clause comes at the beginning of the sentence, a comma is used to separate it from the main clause.
中文： 從屬連接詞「after (在...之後)」引導時間副詞子句。當「after」引導的子句置於句首時，主句與從屬子句之間必須使用逗號隔開。
After we had arrived at the hotel, we unpacked our bags.
在我們抵達飯店後，我們整理了行李。
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, leaving the map ('had left') happened before realizing it ('realized').
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，「遺忘地圖」（had left）發生在「意識到」（realized）之前。
She realized she had forgotten her passport at the hotel.
她意識到她把護照忘在飯店了。
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 'know'.
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「know（知道）」等動詞的直接受詞時，連接詞「that」通常會被省略。
I think we took the wrong turn.
我想我們轉錯彎了。
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 sold' 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。在此句子中，「had sold」（賣完）發生在過去動作「came」（到來）之前。
The train had already left when we arrived at the station.
當我們到達車站時，火車已經開走了。
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 finished her homework before she went to bed.
她在上床睡覺之前就已經完成了功課。
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 traveled' indicates that prior to the past trip being discussed, the speaker had no experience of traveling so far.
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。在本句中，「had never traveled」表示在所討論的該次過去旅行之前，說話者從未有過旅行到那麼遠的經驗。
She had never seen the ocean before she visited California.
在她造訪加州之前，她從未見過海洋。
EN： The adverb 'so' is used as an intensifier before adjectives or adverbs (like 'far') to mean 'to such a great degree' or 'extremely'.
中文： 副詞「so」在形容詞或副詞（如「far」）前用作修飾語，表示程度極深，意為「如此地」或「非常地」。
I didn't know the hotel was so close to the station.
我不知道那家飯店離車站這麼近。
EN： In English-speaking cultures, sharing personal travel milestones (like traveling far from home for the first time) is a common way to build rapport and share life experiences during casual conversations.
中文： 在英語系國家的文化中，分享個人的旅行里程碑（例如第一次遠行）是日常社交對話中建立關係、分享生活經驗的常見話題。
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 saved' indicates that the backup plan was prepared before the main past event or situation occurred.
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」表示在過去的某個主要事件或狀況發生之前，我們就已經準備好了備用方案。
By the time the storm started, we had found a safe shelter.
在暴風雨開始之前，我們就已經找到了一個安全的避難所。
EN： The adverb 'Luckily' is used as a sentence modifier (or comment adverb) to express the speaker's attitude toward the entire situation. It is typically placed at the beginning of the sentence and followed by a comma.
中文： 副詞「Luckily」（幸好／幸運地）在此用作句子修飾語（或稱評註性副詞），用來表達說話者對整個狀況的態度。它通常置於句首，後面加上逗號。
Luckily, the rain stopped before our outdoor wedding began.
幸好，在我們的戶外婚禮開始之前，雨就停了。
EN： In travel and project management contexts, having a 'backup plan' (often referred to as 'Plan B') is highly valued in Western culture. It reflects a proactive attitude toward uncertainty and unexpected disruptions, which are common themes in travel narratives.
中文： 在旅遊和專案管理的語境中，準備「backup plan」（備用方案，通常也稱為 Plan B）在西方文化中非常受到重視。這反映了對不確定性和突發狀況（這在旅遊敘事中很常見）採取未雨綢繆、積極應對的態度。
EN： The simple past tense is used to describe completed actions in the past. In this sentence, 'took' is the irregular past tense form of the verb 'take'. It is often accompanied by past time expressions like 'last summer'.
中文： 簡單過去式用於描述過去已完成的動作。在此句子中，「took」是動詞「take」的不規則過去式變化。通常會與過去的時間副詞（如「last summer」去年夏天）連用。
Last year, we took a train to Paris.
去年，我們搭火車去了巴黎。
EN： The collocation 'take a trip' means to travel or go on a journey. It is commonly followed by the preposition 'to' to indicate the destination.
中文： 動詞片語「take a trip」意為「去旅行」。後面通常會接介係詞「to」來表示目的地。
They want to take a trip to Japan next winter.
他們明年冬天想去日本旅行。
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 planned' happened before the past action 'left'.
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，「計劃好」（had planned）發生在另一個過去動作「離開」（left）之前。
She had already finished her homework before her friends arrived.
在她的朋友到達之前，她就已經寫完功課了。
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）用於連接兩個子句，表示主要子句的動作（過去完成式）發生在從屬子句的動作（簡單過去式）之前。
They had locked the door before they went to bed.
他們在上床睡覺之前就把門鎖好了。
EN： The Past Perfect tense ('had' + past participle) is used to show that an action was completed before another action or a specific time in the past.
中文： 過去完成式（had + 過去分詞）用於表示某個動作在過去的另一個動作或特定時間點之前就已經完成。
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 time clause 'by the time' means 'not later than the moment that' and is commonly used with the Past Perfect in the main clause to show sequence of events.
中文： 時間副詞子句接「by the time」（到了…的時候/在…之前），主句通常搭配過去完成式，用來強調兩個過去事件的先後順序。
By the time she called me, I had already left the office.
在她打電話給我時，我已經離開辦公室了。
EN： The Past Perfect Tense ('had' + past participle) is used to describe an action that occurred before another action in the past. In this sentence, taking the wrong train ('had taken') happened before they realized it ('realized').
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發生的動作。在本句中，「搭錯火車」（had taken）發生在「意識到」（realized）之前。
She realized that she had left her keys at the office.
她意識到她把鑰匙留在辦公室了。
EN： The noun clause introduced by 'that' acts as the direct object of the verb 'realized'. It contains the complete thought or fact that was realized. In informal English, 'that' can often be omitted.
中文： 由「that」引導的名詞子句作為動詞「realized」的直接受詞，包含被意識到的完整想法或事實。在非正式英語中，「that」通常可以省略。
I believe that we made the right decision.
我相信我們做出了正確的決定。
EN： The past perfect tense ('had' + past participle) is used here with 'never' to describe an experience that had not occurred up to a specific point in the past (the time of the trip).
中文： 過去完成式（had + 過去分詞）在此與 'never'（從未）連用，用來描述在過去某個特定時間點（旅行當時）之前，從未發生過的經驗。
Before that day, I had never seen such a beautiful sunset.
在那天之前，我從未見過如此美麗的日落。
EN： The linking verb 'feel' is followed by the past participle 'lost' acting as an adjective to describe the subject's emotional or physical state.
中文： 連繫動詞 'feel'（感覺）後面接過去分詞 'lost'（迷失的）作為形容詞，用來描述主詞的情感或身體狀態。
She felt exhausted after the long flight.
在長途飛行後，她感到筋疲力盡。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action or point of 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時間點或另一個過去動作之前，就已經完成的動作。
By the time we arrived at the station, the train had already left.
當我們到達車站時，火車已經開走了。
EN： The adverb 'luckily' is used as a sentence modifier to express the speaker's attitude toward the situation, meaning 'it is fortunate that...'. It is usually placed at the beginning of the sentence.
中文： 副詞「luckily」（幸好、幸運地）用作全句修飾語，表示說話者對該情況的態度，意思是「很幸運的是...」，通常置於句首並用逗號隔開。
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 rested' happened first, and 'found' happened second.
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，「休息」（had rested）發生在先，「找到」（found）發生在後。
After she had finished her homework, she watched TV.
在她寫完功課之後，她看了電視。
EN： Adverbial clauses of time introduced by 'after' describe when the main action took place. When the adverbial clause comes first, it is separated from the main clause by a comma.
中文： 由「after」（在……之後）引導的時間副詞子句，用來描述主句動作發生的時間。當副詞子句放在句首時，與主句之間必須用逗號隔開。
After we had packed our bags, we checked out of the hotel.
在我們收拾好行李之後，我們辦理了退房手續。
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 not given up' happened before the state of being happy ('were happy').
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，「沒有放棄」（had not given up）發生在「感到高興」（were happy）之前。
They were relieved because they had found their lost keys.
他們鬆了一口氣，因為他們找到了遺失的鑰匙。
EN： The phrasal verb 'give up' means to stop making an effort or to resign to defeat. In the past perfect tense, 'give' becomes 'given'. When negated, 'not' is placed between 'had' and the past participle 'given'.
中文： 片語動詞「give up」意為停止努力或放棄。在過去完成式中，「give」變為過去分詞「given」。否定時，將「not」放在「had」與過去分詞「given」之間。
She had not given up on her dream despite the difficulties.
儘管困難重重，她也沒有放棄她的夢想。
EN： The verb 'teach' can be used in the pattern 'teach + object + to-infinitive' (teach someone to do something) to show that someone helps another person learn a skill or behavior.
中文： 動詞「teach」（教導）常用於「teach + 受詞 + 不定詞」（教導某人做某事）的句型，用來表示幫助某人學習某種技能或行為態度。
My mother taught me to cook when I was young.
我母親在我年輕時教我做飯。
EN： The verb 'stay' can function as a linking verb followed by an adjective (e.g., 'stay calm', 'stay healthy') to mean remaining in a particular state or condition.
中文： 動詞「stay」可作為連綴動詞，後接形容詞（例如「stay calm」保持冷靜、「stay healthy」保持健康），表示維持在某種特定的狀態或情況中。
Please stay quiet during the performance.
演出期間請保持安靜。
EN： Wh-questions with the verb 'to be' in the past simple tense. In this structure, the question word (Why) is followed by the past tense form of 'be' (were), then the subject (you), and finally the adjective/complement (late).
中文： 使用過去簡單式 be 動詞的 Wh- 問句。在此結構中，疑問詞 (Why) 後面接 be 動詞的過去式 (were)，接著是主詞 (you)，最後是形容詞/補語 (late)。
Why were you angry at the meeting yesterday?
你昨天開會時為什麼生氣？
EN： The prepositional phrase 'late to [a place]'. While 'late for' is commonly used for events (e.g., late for school, late for work), 'late to' is often used when emphasizing the destination or arrival at a specific physical location like an airport or station.
中文： 介係詞片語「late to [地點]」。雖然「late for」通常用於活動（例如：上學遲到、上班遲到），但「late to」常用於強調抵達特定實體地點（如機場或車站）的遲到情況。
She was late to the train station and missed her ride.
她去火車站遲到了，結果錯過了火車。
EN： In Western travel culture, arriving late to an airport is a common source of high stress due to strict security checks and boarding cut-off times. Asking 'Why were you late...' in a supportive tone is a common way to show concern after a stressful travel event.
中文： 在西方旅遊文化中，由於嚴格的安全檢查和登機截止時間，去機場遲到通常是極大壓力的來源。以關切的語氣詢問「你為什麼遲到……」，是經歷壓力緊繃的旅行事件後，表達關心與好奇的常見方式。
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 'came down'.
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。在此句子中，「計程車開走 (had left)」發生在「我下樓 (came down)」之前。
The train had already departed before we reached the station.
在我們到達車站之前，火車就已經出發了。
EN： The subordinating conjunction 'before' introduces an adverbial clause of time, indicating the sequence of events. The clause following 'before' typically uses the Simple Past tense when paired with the Past Perfect in the main clause.
中文： 從屬連接詞「before（在……之前）」引導時間副詞子句，用來表示事件的先後順序。當主句使用過去完成式時，由 before 引導的子句通常使用一般過去式。
She had finished her homework before she went to bed.
她在上床睡覺之前就已經寫完了功課。
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.
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。
She had finished her homework before her mother came home.
在媽媽回到家之前，她已經做完功課了。
EN： The conjunction 'before' is used to connect two clauses, indicating that the action in the main clause (Past Perfect) happened prior to the action in the adverbial 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）發生在副詞從句的動作（簡單過去式）之前。
They had left the office before the rain started.
在下雨之前，他們就已經離開辦公室了。
EN： The Past Perfect tense (had + past participle) is used here in its question form ('Had you + past participle') to ask about an experience that occurred before a specific point in the past. The adverb 'ever' is commonly used in questions to mean 'at any time before now'.
中文： 過去完成式（had + 過去分詞）在此處以疑問句形式（Had you + 過去分詞）呈現，用來詢問在過去某個特定時間點之前是否曾有過某個經驗。副詞「ever」常用於疑問句中，表示「在（過去）那時之前的任何時候」。
Had you ever seen a penguin before you went to Antarctica?
在你去南極洲之前，你曾見過企鵝嗎？
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 been' indicates that the experience of visiting that place did not occur at any point prior to 'last week'.
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就已經完成的動作或狀態。在本句中，「had never been」表示在「上週」之前的任何時間點，都未曾有過造訪該地的經驗。
I had never seen a glacier until I visited Alaska.
在我去阿拉斯加之前，我從未見過冰河。
EN： The preposition 'until' is used to show that an activity or situation continues up to a particular time. When paired with a negative past perfect ('had never... until'), it emphasizes that the situation changed only at that specific past moment.
中文： 介係詞「until」（直到……）用於表示某個活動或狀態持續到特定時間點。當與否定過去完成式（had never... until）連用時，它強調了該狀態直到過去的那個特定時刻才發生改變（即在上週終於去過了）。
She had not heard the news until yesterday.
直到昨天她才聽到這個消息。
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 line had grown' happened before 'we checked in'.
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，「排隊的人群變長（had grown）」發生在「我們辦理入住（checked in）」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： 'By the time' is a subordinating conjunction used to introduce a time clause, meaning 'no later than the moment that'. It is typically followed by a simple past verb when referring to past events.
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「不遲於某個時刻」或「到了…的時候」。在描述過去事件時，其後通常接簡單過去式動詞。
By the time he arrived at the station, the train had left.
當他到達車站時，火車已經開走了。
EN： The Past Perfect tense ('had' + past participle) is used to describe an action that was completed before another action or point in 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時間點之前，就已經完成的動作。在本句中，「提前規劃」（had planned）發生在「感到平靜」（felt）之前。
They had already left when we arrived at the station.
當我們到達車站時，他們已經離開了。
EN： The subordinating conjunction 'because' introduces a dependent clause of reason, explaining why the action in the main clause ('We felt calm') occurred.
中文： 從屬連接詞「because」（因為）用來引導表示原因的從屬子句，解釋主句動作（「我們感到平靜」）發生的原因。
She stayed home because she was not feeling well.
她待在家裡，因為她身體不舒服。
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 booked' happened before the past action 'sold out'.
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，「訂位 (had booked)」發生在另一個過去動作「售罄 (sold out)」之前。
The train had already left when we arrived at the station.
當我們到達車站時，火車已經開走了。
EN： The phrasal verb 'sell out' means to sell all of the available tickets, seats, or goods. In the past tense, it becomes 'sold out'.
中文： 片語動詞「sell out」意為售罄、賣光（所有的票、座位或商品）。其過去式為「sold out」。
The concert tickets sold out in just five minutes.
音樂會的門票在短短五分鐘內就售罄了。
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 landed' happened first, before the past action 'took'.
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，「had landed（降落）」發生在過去的另一個動作「took（休息）」之前。
After we had finished the project, we celebrated.
在我們完成專案之後，我們慶祝了一下。
EN： The phrase 'take a rest' means to stop doing an activity in order to relax or recover strength. The adjective 'quick' is used to modify 'rest' to indicate a short duration.
中文： 片語「take a rest」意思是停止活動以進行放鬆或恢復體力。形容詞「quick（快速的）」用來修飾「rest」，表示時間很短暫的休息。
Let's take a quick rest before we climb the hill.
在我們爬山之前，先稍作休息吧。
EN： The use of 'what' as a nominal relative pronoun (also called a fused relative pronoun). It functions as 'the thing(s) that' and introduces a noun clause that acts as the direct object of the verb 'forget'.
中文： 使用「what」作為關係代名詞（又稱融合關係代名詞）。它的功能相當於「the thing(s) that」（所……的事物），引導一個名詞子句，在句中作為動詞「forget」的直接受詞。
I don't understand what you mean.
我不懂你指的是什麼意思。
EN： The past perfect tense ('had seen') is used here to emphasize that the action of seeing occurred and was completed in the past, prior to the future-oriented perspective of 'forgetting' from that past standpoint, or to reference a specific past experience during a trip.
中文： 此處使用過去完成式（had + 過去分詞「seen」），用以強調「看見」這個動作發生在過去，且在過去某個時間點（如旅程結束）之前就已經完成，與後續的記憶形成時間先後對比。
She cherished what she had learned during the summer camp.
她珍惜她在夏令營中所學到的一切。
重要單字附有 IPA 發音、定義、例句和互動式測驗。
在本文中： 感到失望的，沮喪的
在本文中： 意識到，明白，領悟
在本文中： 幸好，幸運地
在本文中： 不知怎麼地，以某種方式
在本文中： 陌生的，奇怪的
在本文中： 冷靜的，鎮靜的
在本文中： 鬧鐘
在本文中： 著陸，降落
片語包含類型標示、雙語定義、用法說明和例句。
An alternative plan to be used if the original plan fails.
後備方案，備用計畫
To stop believing that something good will happen or that you can succeed.
放棄希望
To make plans for something before it happens.
提前計畫，預先規劃
To sell all of the available items, tickets, or goods.
售罄，賣光