時間介系詞: before, during, after

介系詞 before 表示在...之前; after 表示在...之後; during 表示在...期間。

Amanda has to get to school before 7:00 this morning.

Amanda今天必須在上午7時前去學校。

One day after dinner, Lois went to the park for a walk.

有一天晚飯後,Lois 去公園散步。

before 與 after 也可以當連接詞使用。

Don't forget to brush your teeth before you go to bed.

雖然 during 是介系詞, while 是連接詞; 這兩個字卻有相同的意義。

Why does the Moon sometimes come out during the day?

為什麼月亮有時白天出來?

While I was taking a snap, the fire alarm rang suddenly.

當我正在小睡時,火警警鈴突然響起。

這句子的 While 也可以用 When 或 As,意思是一樣的。

When I was taking a snap, the fire alarm rang suddenly.

As I was taking a snap, the fire alarm rang suddenly.

Grammar



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