状语从句.pptx

1、 The Adverbial Clause 状语从句RevisionRevision1. 状从句2. 条件状从句3. 比状从句4. 果状从句5. 原因状从句6. 目的状从句7. 步状从句状从句的种 Read these if sentences and match the possible actions with the results.A1The word unless means if not. For example, these sentences have the same meaning:Unless you keep ice cream in a freezer, it mel

2、ts.Using Using Using Using if notif notif notif not and and and and unlessunlessunlessunlessIf you do not keep ice cream in a freezer, it melts.Unless or if not can be used as a first clause.You will be late for schoolunless you leave now.if you dont leave now.Unless or if not can also be used as a

3、second clause.Unless you leave now, you will be late for school.If you dont leave now,考点回3. Take the exam carefully, or you wont get full marks. （11年中考）(改为句意相同的句子）_ you _take the exam carefully, you wont get full marks._ you take the exam carefully, you _ get full marks.条件状从句连词：if, unless 1. I wont

4、go _Im invited.2. Youll make progress _you work hard,. unless if If dontUnlesswontIfwill条件状从句知点接1. Unless在意义上相当于ifnot 表示“除非”“如果不”3. 条件状语从句可以和另一句式互换，它就是“祈使句，+and/or +简单句”。其中and 表示句意顺承；or 则表示转折，意为“否则”。 If you work harder, youll pass the exam. = Work harder， and youll pass the exam. If you dont hurry u

5、p, youll miss the train. = Hurry up, or youll miss the train.2. 条件状语从句的时态通常为主将从现（也包括主句为祈使句或情态动词） 1. I will send an e-mail to you as soon as I _to Britain. (get)2. When summer holiday _, many people will travel abroad with their children. (come)（2013浦东二模）comesgetwhen, as, as soon as, till, until, not

6、until, before, after, while引导的时间状语，当主句用一般将来时表示将要发生的动作，从句常用一般现在时表将来。知点接 状从句考点回考点回知点接 状从句1. since引导的时间状语从句，主句常用现在完成时，从句用一般过去时. (It is +一段时间+since从句)。2. 对 since 引导的时间状语提问要用how long. 1. He_ us maths since he_ here. 2. Where_ you _since I _you last time？ Its ten years since I worked in the hospital.has t

7、aughtcame havebeensaw(teach)(come)(be)(see)在肯定句中until/till表示“直到.为止”，主句要用延续性动词。在否定句中，until/till表示“直到.才”，主句通常用瞬间性动词。常构成：notuntil结构，有时可用never, nothing代替not.考点回知点接 状从句1、我的妈妈一直等到我回来。2、 直到我回来他才离开。 My mother waited till/until I came back.He didnt leave until I came back.3、We didnt start our discussion _ ev

8、erybody arrivedA) since B) if C) while D) untilD 1. Tom came in while I _ TV. （watch）while引导的从句中，动作一定是表示延续的, 通常用进行时。考点回知点接 状从句2. He was still working on his project while other people _ a rest. (09中考）A. were having B. are having C. will have D. havewas watchingA 1. I _ TV when the earthquake happene

9、d in Shanghai half a month ago. (12年二模）when引导的时间状语从句，主句动作延续长的, 通常用进行时；主句动作发生在从句动作之前，通常用过去完成时。考点回知点接 状从句A. watch B. watched C. was watching D. had watchedC2. When they got to the airport, their flight _ off.A. took B. had taken C. takes D. has taken B考点回1. Im going to make an early start in order not

10、 to miss the train. (保持句意基本不变) （09中考）Im going to make an early start _ _I wont miss the train. 目的状从句连词：so thatso that1. 目的状语从句通常由 so that, (in order that)引导。2. 注意主从句的时态保持一致。3. 将目的状语从句改为简单句，可以向in order（not) to, so as (not) to do 转换知点接知点接考点回果状从句连词：sothat1. Peter is so tall that he can reach the apple

11、on the big tree. = Peter is tall _ _ reach the apple on the big tree. The boy is so young that he cant look after himself. = The boy is _ _to look after himself. =The boy _ _ _ to look after himself.enough to too youngisnt old enough当that引导的结果状语从句为肯定句时，sothat.可以与beenough to do转换；当从句为否定句时，可以与tooto.或b

12、e notenough to do转换，从而使复合句变为简单句。知点接考点回果状从句连词：sothat3. The problem is _ difficult _ the little boy_ work out. (代词it省略）4. The problem is _ difficult _ the little boy_ work it out.sothat引导的结果状语从句中指代主句中主语的代词不可省略。toofortocantthatso考点回1. He was absent from the meeting that day_ he had a bad cold.原因状从句连词：b

13、ecause，as,forSince/now that2. _you have read the story, I wont tell you again.becauseSince/Now that知点接1. because表示的往往是读者不了解的、不明显的原因，是全句叙述的重点，语气最强，只能用because回答由疑问词why引导的疑问句。该从句一般位于主句后.2. because不能与并列连词so同时在句中使用。3. As 表示读者了解的明显原因，不是全句叙述的重点，较口语化，语气较弱。 As I was in a hurry, I left my book at home.考点回步状从句

14、连词：though, althoughA1. _ John failed to climb to the top of the mountain several times, he didnt give up. （09中考）A. Although B. Because C. Whether D. Unless知点接1. 让步状语从句可置于句首，也可置于句尾。2. though，although表示“虽然”之意。 这两个连词意思大致相同，在一般情况下可以互换使用。在口语中，though较常使用，although比though正式。3. though，although不能与but在句中同时使用。考

15、点回比状从句连词：知点接than，asas/not as(so)as She draws better than any other student in her class. (保持句意相同）Nobody else draws _ _ _ she.She draws _ in her class.as well as(the) best1.than用于比较级，asas, not as/soas中用形容词或副词的原级.2.注意原级、比较级、最高级之间的转换。Exercise1、If it _ tomorrow, we will have a picnic in the park.A) dont

16、 rain B) didnt rain C)wont rain D) doesnt rain2、I wont believe the five-year-old boy can read so many words _ I have tested him myself.A) afterB) whenC) ifD) until3、When I _ the cinema, the film _ for ten minutes.A) got to has begunB) arrived at has been onC) reached had begun D) hurried to had been

17、 onDDD4、The people there did not allow them to set up a factory _ pollute the water in the river.A) not so as toB) so as not toC) in order to D) so that5、While we _ around our neighborhood after supper, it began to rain.A) walkB) walkedC) are walking D) were walking6、Eric wont start the experiment u

18、ntil his teacher _ him how to do it.A) will showB) showC) showsD) showedBDC7、If Tony isnt careful enough with his lesson, more mistakes _ later.A） have madeB) will makeC) have been madeD) will be made8、Many people _ his fans since Jeremy Lin led the Knicks to win seven NBA games.A) had becomeB) have

19、 becomeC) will becomeD) became9、When you phoned me yesterday afternoon, I _ table tennis with my son.A) had playedB) playedC) was playingD) has playedDBC10、A: What would some students like to do after finishing their education? B: They would like to start to work _ they neednt depend on their parents. A) as soon asB) so that C) if D) althoughBReturn