初中状语从句精讲PPT课件.ppt

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1、 专题句型专题句型状语从句状语从句考点揭密考点揭密中考考点设置中考考点设置典型例题解析典型例题解析课时训练课时训练 考点揭密考点揭密 在复合句中修饰主句中的动词、形容词或副词，在复合句中修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可置主语之起状语作用的从句叫状语从句。状语从句可置主语之前，也可置主语之后。前，也可置主语之后。前置时，从句后用逗号与主句前置时，从句后用逗号与主句分开；分开；后置时，与主句之间无标点符号。后置时，与主句之间无标点符号。 状语从句可分为状语从句可分为时间、原因、目的、结果、条件、时间、原因、目的、结果、条件、 比较、地点、比较、地点、让步、方式

2、等九类。让步、方式等九类。e.g. If you go to the party, you will have a good time. e.g. You will have a good time If you go to the party. 引导时间状语：引导时间状语：after,before,when,while,until/till since,as soon as, no soonerthan, hardlywhen引导条件状语：引导条件状语：if, unless, as long as引导原因状语：引导原因状语：because, as, since, for, now that引

3、导结果状语：引导结果状语：so( that), sothat, suchthat引导目的状语：引导目的状语：so that, in order that, in case引导让步状语：引导让步状语：although, though, even though， even if, while ，however,whoever 中考考点设置中考考点设置1.时间状语从句时间状语从句(1)引导词：引导词：when, while, as, before, after, as soon as, until/till, since. e.g. Mother was cooking dinner when I

4、reached home.( when “当当的时候的时候”） e.g. While the girl was shopping, the UFO landed. （ While “当当的时候的时候”）e.g. Dont close the window before you go to bed.(before 在在之前）之前）e.g. As he was reading, he was listening to the radio.（As “一边一边一边一边”）e.g. After I had done my homework, I went to bed.e.g. The Greens h

5、as lived here since they came to China.(since 引导的时间壮引导的时间壮 语从句若用一般过去时，主句则用现在完成时语从句若用一般过去时，主句则用现在完成时 时间壮语时间壮语从句从句中若用中若用一般将来时一般将来时，从句从句 则用则用一般现在时一般现在时表示将来，即遵循表示将来，即遵循“主将主将 从现从现”的原则。的原则。e.g. I will write to you as soon as I get to Beijing.e.g. I will tell him when he comes back. 注意注意e.g. I wont go to b

6、ed until I finish my homework.(3)not.until的同义句替换。的同义句替换。 notuntil在否定句中在否定句中表示表示“直到直到才才”，主句中的动词常用主句中的动词常用终止性动词终止性动词, 这时这时till/until可用可用before替换替换 till/until 在肯定句中在肯定句中表示表示“直到为止直到为止”主主 句中动词用句中动词用延续性动词延续性动词 e.g. I waited till / until he arrived. (wait是一个延续性动词）是一个延续性动词）e.g. I didnt leave until/till/befo

7、re she came back.（leave是个短暂性动词）是个短暂性动词） practice:1. I will go to bed as soon as I _my homework. A. will finish B.finishing C. finishC 4. I will not watch TV until I finish my homework . =I will not watch TV _ I finish My homework . before2.My sister _(read)her bookin the classroom when her teacher c

8、ame in. was reading3.I _ (do)homework while my parents_(watch) TV last night.was doingwere watching (3)if.not与与unless(=ifnot) 及及or的同义句转换。的同义句转换。 (2)遵循遵循“主将从现主将从现”的原则的原则, (即主句若为一般将来时，即主句若为一般将来时，从句用一般现在时代替将来。从句用一般现在时代替将来。)2.条件状语从句条件状语从句(1)引导词：引导词：if,unless.e.g. If I am free, I will call you. e.g. If i

9、t doesnt rain, we will go for a walk. unless是从属连词，它引导条件壮语从句，译作是从属连词，它引导条件壮语从句，译作“除非除非否则的话否则的话” e.g. You will be late for class unless you start right now.除非除非你现在出发你现在出发否则的话否则的话年上学就会迟到的。年上学就会迟到的。 e.g. You will not succeed unless you work hard. 小结小结:“祈使句祈使句+or+一般将来时的陈述句一般将来时的陈述句”结构中，结构中，Or表示转折，译作表示转折，

10、译作“否则，不然的话否则，不然的话”相当于一个否定的条件状语从句。相当于一个否定的条件状语从句。相当于相当于If you dont(cant), you will例句例句. Study harder,or you will fail the exam.=If you dont study harder, you will fail the exam.=Unless you study harder, you will fail the exam.例句例句. Hurry up, or you will be late.=If you dont hurry up, you will be late

11、.=Unless you hurry up, you will be late. practice: 1. If you _ to the party, you_ have a good time.go will 2. She _next Sunday if she_ busy. will go shopping is not 中考考点设置中考考点设置3.原因状语从句原因状语从句(1)引导词引导词:because, since, as.(2)对对because 原因状语提问用原因状语提问用“why”。(3)because 不能与不能与so连用。连用。(4)because,since，as,fo

12、r的区别：的区别： Why are you standing here? -Because Im waiting for my uncle. because 从句所表示的是对方不知道从句所表示的是对方不知道的的直接的原因直接的原因，因此在回答以，因此在回答以why引导引导的特殊疑问句的特殊疑问句时时只可用只可用because,它引导它引导的从句可以位于主句前或主句后的从句可以位于主句前或主句后. 而而as,since 引导的从句却不可；引导的从句却不可；例句例句: Li Hong didnt go to school yesterday,because he was ill. as从句所表示从

13、句所表示比较明显的原因和理由比较明显的原因和理由(由于由于,既然既然)这种原因一般是这种原因一般是大家知道大家知道的的,一般一般从句说明原因从句说明原因，主主句说明结果句说明结果。其。其从句位于主句之前从句位于主句之前, since用来表示比较勉强的理由和原用来表示比较勉强的理由和原或原由已为人们所或原由已为人们所知。知。 e.g. As the water was not deep, we were able to cross the river.(从句说明原因从句说明原因，主句说明结果主句说明结果)e.g. AS I knew he was ill, I didnt call him.e.

14、g. Since everybody is here, lets bigin the meeting （“大家都在这里大家都在这里”的原由已为人们所知）的原由已为人们所知）e.g. Since you cant answer the question,（原由已为人们所知）（原由已为人们所知）Ill ask someone else.for往往用于附加理由证明。所说的理由是一种补充说明。往往用于附加理由证明。所说的理由是一种补充说明。分句前常有逗号分句前常有逗号，其引导的其引导的分句不可放于句首分句不可放于句首。例句：例句：Its spring now, for the flowers are

15、out.Practice:Why hasnt Mr. Li come to work today.- _he has gone to Beijing to have a meeting. A.If B.Until C. Though D. Because2. I decided to stop and have lunch, _ I was feeling quite hungry.1. Because of B. for C. AsDB3.Because he was ill, he didnt_ go to school. A. so B. / 4.A. I stayed at home

16、because of the weather was bad. ( ) B. I stayed at home because the weather was bad. ( ) C. I stayed at home because of the bad weather A ( ) AFTT He is such a great father that we all like him.such +a+adj+n(名单名单)+thatIt is such an red apple that I want to eat it.such +an +adj+n(名单名单)+that小结小结: so+a

17、dj+a/an+n(单数）单数）+that such+a/an+adj+n(单数）单数）+that1.It is _small a room _it cant hold so many People. A. so that, B. suchthat =It is _ a small room _it cant hold so many People. A. so that, B. suchthat Practice:AB2.He is _young a boy_ he cant carry the box.He is _ a young boy _ he cant carry the box.

18、 A. so that, A. suchthat例句例句:It is such fine weather that people can go swimming. such +adj+n(不可数不可数)+that例句例句: There are such beautiful flowers that we want to Pick it.such +adj+n(pl)+that小结小结 such+adj+un/n(pl)+thatABI have so little money that I cant buy the book.We have so many friends that we fe

19、el happy.We have so much homework that we tired.小结小结:一般情况下一般情况下,suchthat结构中用名词结构中用名词, 但是但是,如果名词是用如果名词是用little,few, many, much等等 修饰时修饰时,要用要用so来表示来表示.“如此如此” so little(如此少如此少)+u so few (如此少如此少)+cn so many(如此多如此多)+cn so much(如此多如此多)+u注意注意: little 若放在可数名词前若放在可数名词前,译作译作“小小”,而不是而不是“少少”要用要用such来表示来表示. Revie

20、w: so+形形+a/an+名名(单数单数) such+a/an+形形+名名(单数单数) so+many/much/few/little+形形+名名 such+形形+不可数名词不可数名词/可数名词复数可数名词复数 (4)so.that与与too.to和和.enough to间转换间转换 tooto 可与可与not enough注意注意:1.所修饰词和所修饰的词是一对反义词所修饰词和所修饰的词是一对反义词. 2.转换时转换时too放在所修饰词之前放在所修饰词之前.too+adj enough放在所修饰词之后放在所修饰词之后. adj+enoughe.g. The boy is so young

21、that he cant go to school. =The boy is too young to go to school. =The boy is not old enough to go to school. 中考考点设置中考考点设置 6.让步状语从句让步状语从句 (1)引导词：引导词： though /（although）,even though/if.(2)though/不能与不能与but连用。连用。请判断正误，对的写请判断正误，对的写“T”，错误的写错误的写“F”。A. Though I like looking after her, but she doesnt let me

22、 do it. ( ) B. Though I like looking after her, she doesnt let me do it. ( )C. I like looking after her, but she doesnt let me do it. ( )F TT【例例1】 Lucy knew nothing about it _her sister told her.2003 河北省河北省 A.because B.until C.if D.since 典型例题解析典型例题解析【例例3】 The young man travelled all over the world h

23、e had a man-made leg.2003 河南省河南省 A.though B.if C.as D.because B【例例2】 Other people wont be pleased if he the queue.2003 河南省河南省 A.will jump B.jumps C.jump D.jumped BA 【例例4】 The students will go to Summer Palace if it tomorrow.2003 甘肃省甘肃省 A.dont rain B.wont rain C.doesnt rain D.isnt rain C 【例例5】 The dr

24、iver hurt the girl_badly_she had to see a doctor.2003 新疆新疆 A.so,that B.either,or C.too,to D.neither,nor 典型例题解析典型例题解析A 【.单项选择单项选择1.He was_angry to hear the news . A.so B.too C.very D.much2.Because his mother was ill,_he must stay at home to look after her. A./ B.so C.that D.either3.Though the workers

25、 were very tired，_they went on planting trees. A.and B.but C./ D.so4.They didnt watch TV_they finished their homework. A.after B.when C.until D.as 课时训练课时训练(B)(A)(C)(C) 课时训练课时训练5.Ill write to you as soon as I_Beijing. A.get to B.arrive C.will get to D.will arrive6.Well have a trip if it_rain. A.wont

26、B.will C.dont D.doesnt7._you hurry up ,or we will be late for school. A.If B./ C.Unless D.When8.He saves money_he can buy some birthday presents for his mother. A.so B.so that C.such that D.in order9.Why are you late for school? _ I got up late. A.Because B.For C.Since D.As (A)(D)(C)(B)(A)10.The flo

27、wers_well if they_. A.wont grow,dont take good care of B.dont grow,are taken good care of C.dont grow,dont take good care of D.wont grow,are not taken good care of 课时训练课时训练(D)11.He asked_many strange questions that the teacher didntt want to teach him any more. A.so B.such C.too D.very (A)12.Ann is

28、so careful that she always goes over her exercises to there are no mistake. A.look for B.make sure C.find out D.think about(B)13.I have my own car,so I_drive where I want to go. A.must B.have C.need to D.can (D)14.The old man was quite weak after the accident,so he A.must be takes care of B.must tak

29、e care of C.must be looked after D.must look after15.The man had gone away _ the old man said thanks to him. A.that B.so C.until D.before 课时训练课时训练CDp 经常不断地学习,你就什么都知道。你知道得越多,你就越有力量p Study Constantly, And You Will Know Everything. The More You Know, The More Powerful You Will Be写在最后谢谢你的到来学习并没有结束，希望大家继续努力Learning Is Not Over. I Hope You Will Continue To Work Hard演讲人：XXXXXX 时 间：XX年XX月XX日