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初中英語語法大全：狀語從句

1狀語從句

在復合句中，修飾主句中的動詞、形容詞或副詞等的從句叫狀語從句。狀語從句根據它表達的意思可分為時間、地點、原因、目的、結果、讓步、比較（或方式）和條件等類。

1.時間狀語從句

引導連詞有when，while，till，not…until，since，after ,before ,as soon as

The bus won’t start until everybody gets on.

公共汽車直到每人都上車為止，才開動。

When he knocked at the door I was cooking.

當他敲門時，我正在煮飯。

Last night before he came back home, his wife had already cooked dinner and waited for 2 hours.

昨天晚上在他回到家之前，他的妻子已經做好晚飯足足等了他兩小時之久。

After I went to church, I went shopping.

2.地點狀語從句

地點狀語從句通常由where, wherever 引導。

Where there is a will, there is a way.  哪里有志向，哪里就有出路。有志者事竟成。

Where there is a life, there is a hope.   哪里有生命，哪里就有希望。 留得青山在，不怕沒柴燒。

Wherever you go, whatever you do,  I will be right here waiting for you.

不管你去哪里，不管你做什么，我都會在此守侯你。

3.原因狀語從句

引導連詞有because，as, since。

He didn′t see the film because he had seen it.

他沒有看那部電影，因為他已經看過了。

They couldn’t get on the train，for it was too crowed.

比較：because, since, as和for

1）because語勢最強，用來說明人所不知的原因，回答why提出的問題。當原因是顯而易見的或已為人們所知，就用as或 since。

I didn't go, because I was afraid.

Since /As the weather is so bad, we have to delay our journey.

2）由because引導的從句如果放在句末，且前面有逗 號，則可以用for來代替。但如果不是說明直接原因，而是多種情況加以推斷，就只能用for。

He is absent today, because / for he is ill.

He must be ill, for he is absent today.

注意：because不能和so 連用。

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