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house where his father had made cigars. There is no good reason why she should leave so soon. 3 His business had failed, and he had to leave GZ to live in ZJ, where he had an uncle. 非限定性定語從句 I have never been to the town where I was born. 非限定性定語從句有逗號與主句隔開,如果去掉它不會影響主句的意思。指物時用關(guān)系代詞 which,不用 that. 關(guān)系代詞不可以省略。 He looked at the sky, which was covered with dark clouds. 在非限定性定語從句中, which常用于指代前面的整個主句或主句的一部分。 He won the first prize, which we had never expected. Some roads were flooded, which made our journey more difficult. 練習(xí): P187 綜合檢測 狀語從句 ? 時間狀語從句 1 when 引導(dǎo)的從句可表示持續(xù)或短暫的動作;可表示與主句動作同時發(fā)生或先于主句的動作。 When I live in town, I often went to the theatre. When she pressed the button the machine stopped. 2 while引導(dǎo)的從句表示兩個動作同時發(fā)生。從句的動作持續(xù)較久。 Never get on or off a bus while it is in motion. While the woman was listening to the broadcast she kept trembling. 3 as 表示兩個動作同時發(fā)生,持續(xù)時間較短,或表示兩個動作正在發(fā)展、變化,表示“隨著 …” As I left the house I remember the key. As the sun rose, it became warmer. 4 since表示“自從”,從句多用過去時,主句多用完成時態(tài) . They have never seen each other again since she fell ill. It is almost a year since I met you last. 5 till/ until 表示“直到 … 才” He didn’t tell you the news till he was sure of it. Don’t try to get on the train until it stops. 6 As soon as 表示“一 … 就” You can go for your holiday as soon as you finish the job. I’ll let you know about it as soon as we e to any conclusion. ? 原因狀語從句 1 because引導(dǎo),表示的語氣最強(qiáng),可用來回答 why開頭的句子,放在主句后面。 They had to slow down because he couldn’t keep up with them. Why can’t you go with us now?