一、定義

狀語從句在復合句中由從句表示的狀語稱作狀語從句，它可以用來修飾謂語(包括非謂語動詞)、定語或狀語，或是整個句子。

二、狀語從句一般分為八大類

時間狀語從句 地點狀語從句

原因狀語從句 目的狀語從句

結果狀語從句 條件狀語從句

方式狀語從句 讓步狀語從句

1. 時間狀語從句

When ---當……時候, 通常指某一特定的時間點，主句與從句的動作同時發生。

When I opened the window, I saw him come up.

When --- 正在……的時候，突然…。通常主句是進行時或 be about to 時，在翻譯的時候，when 可以譯成沒想到或突然。

I was walking along the street , when I met him.

When 當從句是進行時，主句是一般時，往往表示不滿。

Someone knocked at the door when I was having breakfast.

When=after

When the children had gone to bed, she began to prepare her lessons.

While ---在……期間，往往指一段時間。

While we were inAmerica, we saw him twice.

While ---表示一種不滿情緒，意思是這邊在干某種重要的事，而另一邊在享受等。

We are cleaning the classroom while they are playing the football.

As --- 一邊……一邊, 隨著

She was doing her homework as she was listening to the music.

As --- 當……時，指一個動作緊接著一個動作發生，從句通常用進行時。

As I was going out, it began to rain.

The moment --- 一……就…… =as soon as , immediately,

---Did you remember to give Mary the money you owed her?

---Yes, I gave her the moment I saw her.

Not… until --- 直到……才

He didn’t leave the office until he finished the work.

Before --- 在……之前

The passengers should arrive at the airport an hour before the flight departs.

After --- 在…… 之后

The customer left the ticket counter after he had a quarrel with the ticket agent.

Since ---自從……, 通常主句用現在完成時

I have never been there again since I graduated from the university.

It is just a week since we arrived here.

As soon as --- 一……就……

Jack went to school as soon as he got well.

No sooner than --- 一……就……

no sooner… than… 用于句首要求倒裝

Hardly …when…

Scarcely …when…

No sooner had he arrived than he went away again.

Once --- 一但……就……

Once you see him, you will never forget him.

Every time, each time 每次whenever 每當

Each time he came to town, he would visit our school.