时间状语从句及练习.docx
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1、精品文档,仅供学习与交流,如有侵权请联系网站删除时间状语从句 常见的从属连词有:(注意其汉语意义)when, while, as, before, after, since, until (till) once as soon as, the moment, the minute, immediately, directly, each/every time, the first time, the last time, next time, by the time, whenever等。例如:Every/Each time I was in trouble, he would come to
2、 my help.I thought her nice and honest the first time I met her.注意:(1)when, while, as的区别:1)when引导从句时,主从句的动作有先有后,也可以同时进行,从句的动作可以是持续性的,也可以是短暂的。如:When I got to the airport, the plane had already taken off. (主先从后)(短暂性)When I lived there, I used to go to the seaside on Sundays. (同时) (持续性)When the movie e
3、nded, the people went back. (从先主后)2)while侧重主从句动作的对比,且从句的动词必须是持续性的。如:While we were chatting she was looking at the time table on the wall3)as引导从句时侧重主从句动作同时或几乎同时进行,从句的动作可以是持续性的,也可以是短暂的。如:Sometimes I watch TV as I am having breakfast4)when和while还可以是并列连词,意思分别是“就在这时”,“然而”。如:I was having a rest on the sof
4、a when the telephone rangThey were surprised that a child should work out the problem while they couldnt .注:并列连词when常用与以下句型中:was/were doingwhen(正在做突然)was/were about to dowhen(刚要做突然)was/were on the point of doingwhen(刚要做突然)had just donewhen.(刚一就)Hardly/Scarcely haddonewhen(刚一就)(2)before引导从句时,词义非常灵活,注
5、意下列句子中的before的词义:1.Before I could get in a word, the tailor had measured me.(还没来得及就)2.We hadnt run a mile before he felt tired.(还没就)3.We had sailed 4 days before we saw land.(才)4.Please write it down before you forget it.(趁还没就)(3)till (until) 和nottill (until)1) till (until):主句谓语动词必须是持续性的,意思是“到为止“如:H
6、e remained there till/until she arrived.2) nottill (until): 主句谓语动词必须是短暂性的,意思是“直到才”如:She wont go to bed till/until he returns home.3) notuntil还有强调式和倒装式:强调句:It is not until he returns home that she will go to bed.倒装句:Not until he returns home will she go to bed.(4)几个极易混淆的时间状语从句:1) It was +时间点+when(当的时
7、候时间是)It was 5 am when we arrived at the village.2) It was/will be+时间段+before(没过就过了才)It was/will be two weeks before we met/meet again.3) It is /has been +时间段+since(自从以来有)It is/has been 3 years since we last met.突破点:一看be动词的时态,二看时间段还是时间点。注意:在“It is /has been +时间段+since”句型中,从句的动词必须是短暂性的,如果是延续性的动词,时间要从从
8、句的动作结束时算起。如:It is 3 years since I smoked.( 我戒烟有三年了)补充:as soon as, immediately, directly, instantly, the moment, the minute, the instant, no soonerthan, hardly/scarcely.when.和once这些从属连接词引导的从句都表示从句的动作一发生,主句的动作随即就发生,常译为“一就”。从句中一般时态代替将来时态。every time, each time, next time, the first time, any time, all t
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