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1、状语从句-时间状语从句状语从句在句中作状语,修饰主句中的动词、形容词或副词等。时间状语从句(1)when ,while ,as引导时间状语从句的区别连词用法从句谓语动词when从句的动作和主句的 动作可以同时发生, 也可以先后发生。When可指时间点也 可指时间段。延续性或非延续性as强调主从句动作同时 发生,可译为“一边- 一边随着”延续性动词或非延续性动词while主从句的动作同时发 生,只能表示持续性 的动作或状态延续性动词Eg. When I lived there, I used to go to the seashore on Sundays.When the film ended
2、, the people went home.Please dont talk so aloud while others are working.As he grew old, he began to go deaf.表示“一-就_”的连词引导的时间状语从句连词例句as soon as, onceAs soon as he arrives, wellstart to work.Once you have learned Spanish,you will find Italian easy.the moment, the minute, the instant,the secondThe mo
3、ment I saw him, Irecognized him.instantly, immediately, directlyThe boy burst out crying immediately he saw his mother.特别提示表示“一-_就_”的其他结构:1. hardly/scarcely-when-和 no sooner-than-一结构注意:这两个结构中when和than都是并列连词。When和than前 的分句通常用过去完成时when和than后的分句通常用一般过去时。 当hardly/scarcely和no sooner放在句首时,它们所在的分句要部分 倒装。Eg
4、. I had hardly /scarcely got home when it began to rain.No sooner had we arrived at the station than the train left.2. On+doing和on+ones+n结构On arriving at the station, the thief was arrested. =On his arrival at the station,3. till, until和not-until引导的时间状语从句 延续性动词(肯定式)+un til/till”表示动作延续到-为止” 瞬间动词(否定式)
5、+until/till表示“直至-才发生”Eg. I wont go until/till he comes. not until的强调句型It is /was not until- that-Eg. It was not until the professor came that we began the experiment.注意:not until放在句首,主句用部分倒装。Eg. Not until the film began did she arrive.典例 The problem wont be settledthe manager comes back fromShang ha
6、i.(4)before 和 since 引导时间状语从句 before引导时间状语从句时词义非常灵活。Eg. (l)Pleasemake sure you returnthe bookbeforei ts due.()(2) Some time passed before my stepfatherand I got used to each ot her.()(3) Someonecalled me up in the midnight, but he hung up beforeI could answer the telephone.() since引导时间状语从句,表示“自从一以来”
7、从句用一般过 去时,主句用现在完成时。Eg. Since she graduatedfrom university, she has worked in the cit y. “It +be+寸间段+since/before-” 句型(1) It will be +寸间段+before 过多长时间才一(2) It will not be 时间段+before不了多长时间就一(3) It was +寸间段+before 了多长时间才一(4) It wasnt +时间段+before-没过多长时间就-(5) It is /has been +时间段+since自从-以来有多长时间Eg.翻译句子(1
8、) It will be two years before he leaves the country.(2 ) It wasnt long before he told us about himself.(3)It is five days since he came here. (4 ) It is five years since he lived here. 典例 It is a long time they separated, but it wont be long()they meet again.(用 since 和before填空)(5 ) by the time, each
9、 lever time, next time, the last time, any time,all the time等短语引导时间状语从句典例 I saw Bob, he was surfing the Internet at home.A. The first time B. First time C.For the first time D.By the first time Practice:1. (2014 江西,改编)It was the middle of the nightmy father wokeme up and told me to watch watch the f
10、ootball match.2. (2014 陕西改编I The young couple, who returned my lost wallet, left_ I could ask for their names.3. (2013 山东改编)I have to give a speech, I get extremelynervous before I start.4. (2013 陕西改编I I have heard a lot of good things about you Icame back from abroad.5. (2012 山东改编)He smiled politel
11、y Mary apologized for herdrunken friends.6. (2011 四川改编)As is reported, It is 100 years QinghuaUniversity was founded.7. (2014 天津) You start eating in a healthier way, weight controlwill become much easier.A. UnlessB.Although C.Before D.Once8. (2013 女徽)Its much easier to make friends you have similarinterests.A.unless B. when C. even though D. so that9. (2013 泰安一检 They heard the shout for help, they rushedout.A. The moment B.Immediate C. Suddenly D. A moment