中考英語知識點：時間狀語從句

中考英語知識點：時間狀語從句

　　(1)時間狀語從句常用when, as, while, before, after, since, till, until, as soon as等連詞來引導。例如：

　　It was raining hard when we got to school yesterday.

　　While he was doing his homework, the telephone rang.

　　As he walked along the lake, he sang happily.

　　He had learned a little Chinese before he came to China.

　　After he finished middle school, he went to work in a factory.

　　(2)在時間狀語從句里，通常不用將來時態，用現在時態表示將來的動作或狀態。例如：

　　I’ll ring you up as soon as I get to New York.

　　I will tell him everything when he comes back.

　　He won’t believe it until he sees it with his own eyes.

　　(3)在帶有till或until引導的時間狀語從句的主從復合句里，如果主句用肯定式，其含義是“一直到……時”，謂語動詞只能用延續性動詞。如果主句用否定式，其含義是“直到……才……”, “在……以前不……”, 謂語動詞可用瞬間動詞。例如：

　　The young man read till the light went out.

　　Let’s wait until the rain stops.

　　We won’t start until Bob comes.

　　Don’t get off until the bus stops.

　　[Practice]

　　I didn’t know he came back            I met him in the street.

　　A. since    　      B. when       C. until 　         D. after

　　請填入適當的引導詞

　　I haven’t heard from him _____ he went to America .

　　We found the books two days ____ he had gone away .

　　Do not leave the room _____ you have finished the test.

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