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收藏!山東成人高考英語基礎句式講解之狀語從句1
發(fā)表時間:2021-07-14 13:59 收藏!山東成人高考英語基礎句式講解之狀語從句
今天我們來學習時間狀語從句。
時間狀語從句通常用when,while,as,after,before,since,as soon as,until等連詞引導。
A.作“當……時”講時,when既可與短暫性動詞連用,又可與延續(xù)性動詞連用,as和while要和延續(xù)性動詞連用。
①I'll tell him when he comes.他來的時候我會告訴他。(come是短暫性動詞)②He fell asleep while he was reading a book.他在讀書的時候睡著了。(read是延續(xù)性動作)
B.when引導的從句的謂語動詞可與主句的謂語動詞不同時發(fā)生,而as和while引導的從句的謂語動詞必須和主句的謂語動詞同時發(fā)生。當主、從句動作同時發(fā)生,且從句動作為延續(xù)性動詞時,三者可以互換。
①When he had finished his homework,he took a rest.當他完成作業(yè)時,他休息了一下。(had finished 先發(fā)生)②When/While/As she was watching TV,I was reading a book.當她看電視時,我正在看書。
C.when有時用作等立連詞(并列連詞),意思是“這時,突然”;while作為連詞可以表示讓步關系,意為“雖然”,也可表示轉折關系,意為“但是,可是”;as則有時表伴隨關系,意為“一邊……一邊……”。
①I was about to go out when someone dropped in on me.我正打算出門,這時有人來拜訪我。②While l understand what you say,I can' t agree with you.雖然我理解你所說的,但我并不贊同你的觀點。③The students took notes as they listened.學生邊聽邊做筆記。 山東成人高考報名時間截止在即,早報名早錄取。大家可咨詢電話:15550011809(同微信)進行報名。報名免費送考試復習教材及歷年真題卷。名額有限,欲報從速!
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