【文法懶人包】while 當連接詞的 3 種常見用法
英文單字「while」是個使用率極高的單字，經常出現在文章或對話中，隨著情境應用不同，用法與字義也有所差別，以下小編彙整出『while 作為從屬連接詞的三種用法』，讓你今天一次學！
① 表「當…時」、「和...同時」
引導時間副詞子句，常和進行式連用，語意跟 during the time that 相近，用於兩件事所發生的時間重疊，表示「在這段時間」，可置於句中或句首。
⌞某事進行到一半時，另一件事發生了，while 子句引導持續時間較長的事件。
Max broke a plate while he was washing the dishes.
麥克斯在洗碗的時候打破了一個盤子。
Martin was almost hit by a car while he was walking home from work.
馬丁下班走路回家時點被一輛車子撞到。
⌞一段時間內同時發生兩件事
Can you take care of my dog while I'm on vacation?
你可以在我度假的時候照顧我的狗嗎？
While she was shopping for groceries, Jane saw her husband with another woman.
珍在採購食品雜貨時看到她的丈夫跟另一個女人在一起。
Billy finished his homework while the other children went outside to play.
當其他小孩跑出去玩的時候，比利完成了它的作業。
② 表「然而…；但…」
用來比較或對比前後兩個句子，強調兩者情況的不同，語意近似「but、whereas」，可置於句首或句中（需加逗號）。
Robert gets 30 vacation days every year, while his husband doesn't.
羅伯特每年都有30天的休假日，而他的丈夫卻沒有。
Cameron drives an expensive car, while Mallory only has a second-hand bike.
卡梅倫開一台昂貴的車，而馬洛麗卻只有一台二手腳踏車。
Evan always orders dessert, while Stephanie only gets coffee.
伊凡永遠都會點甜點，而史黛芬妮只會點咖啡。
Arthur likes cold weather, whereas Pil prefers hot weather.
亞瑟喜歡寒冷的天氣，但菲爾則偏好炎熱的天氣。
Whereas Jason wants to have Italian food for dinner, his wife wants Indian food.
傑森晚餐想吃義大利料理，但他的太太想吃印度料理。
③ 表「雖然；儘管」
常放句首，屬於正式用法，與「although」語意相近。
While Frankie hasn't lived in Mexico for years, he still speaks great Spanish.
= Although Frankie hasn't lived in Mexico for years, he still speaks great Spanish.
雖然弗蘭基已離開墨西哥多年，但是他的西班牙語還是講得很棒。
While I respect your decision to leave the company, I don't think it's the right thing to do.
雖然我尊重你離開公司的決定，但我不覺得這是一件對的事。
While the dog was small, it had a loud bark that surprised everyone.
儘管這隻狗很小，牠卻有可以嚇到所有人的大嗓門。
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