原因状语从句-.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,状语从句分类,表示时间,表示原因,表示结果,表示目的,表示让步,表示比较,表示条件,1,一,:,原因状语从句,定义：如果从句表达的是,主句行为的原因,，就构成,原因状语从句,。,引导词：,because,since,as,for,2,关于,because,because,表示的原因是必然的因果关系，,语气最强，通常放在主句之后，有时也放在主句之前,。,You want to know why I am leaving?,I am leaving,because,I am tired.,(2),回答,why,提出的问题，只能用,because,不能用 其余三者。,A,：,Why,cant I go?,B,：,Because,you are too young.,3,(,3)because,从句可用作表语，其余不能。,This is because,the earth is travelling around the sun.,(4),表示“,的原因是因为,”,这一意义时，一般要用,The reason whyis that,如：,The reason why,he cannot come,is that,he is ill.,4,because,后跟句子,I was late for schoolbecause,I got up,late.,because of,后跟名词,We didnt go to the cinema,because of,the rain,.,5,关于,since,since,引导的原因状语从句一般放于主句之前,表示,已知的、显然的理由,(,通常被翻译成“,既然,”,),，较为正式,语气比,because,弱。,Since,you are free today,you had better help me with my maths,.,既然,今天你休息，你最好帮我补习数学。,6,大家有疑问的，可以询问和交流,可以互相讨论下，但要小声点,7,关于,as,as,引导原因状语从句时表示附带说明的“,双方已知的原因,”，语气比,since,弱，较为正式，位置较为灵活,(,常放于主句之前,),。,As,it is raining,youd better take a taxi,.,既然在下雨，你最好乘出租汽车。,I went to bed early,as,I was very tired.,我睡得早，因为我筋疲力尽了。,8,For,“,因为,由于,”,表明附加或推断的理由，,引导的分句前常有逗号。,for,分句不放句首,.,It rained last night,for,the ground is wet this morning.,9,注意：,汉语习惯上说,“,因为,所以,”,，,但英语却不能将,because,since,as,for,等,与,so,(,所以,),连用。,10,二：结果状语从句,定义,：表示由某个行为而导致的结果,引导词,：,so,so.that,，,such.that,11,So,因此,Its going to rain,so,take an umbrella,when you go out.,He worked too hard,so,he fell ill again.,12,so.that,如此,.,以致于,1.so+,形副,that,He was,so,glad,that,he couldn,t say a word.,The hall is,so,big that it can hold 2,000 people.,Mother lives,so,far away,that,we hardly ever see her.,13,2.so+,形容词,a(an),可数名词单数,that,He is,so good a boy that,every teacher,likes him.,It is,so heavy a box that,the little boy,cant carry it.,14,3.so,many/few/much/little,复名,(,不可名,),+that,Soon there were,so many people that,they ate all the food.,He has,so little time that,he cant go to the cinema with you.,可数名词,不可数名词,15,suchthat,“如此的,以致于”表结果。,1.such,a(an),形可数名词名词单数,that,Mr Green is,such a good teacher,that,everybody likes him.,It was,such an interesting film that,everyone laughed.,16,2.such形容词复数名词不可数名词,that,Our town has,such fresh air that,every,visitor wants to come.,17,1.so+,形副,that,2.so+,形容词,a(an),单数名词,that,3.so,many/few/much/little,复数名词,(,不可名,)+that,So,强调的是形容词,suchthat,“如此的,以致于”表结果。,1.such,a(an),形可数,名词,单数,that2.such,形复数,名词,不可数,名词,that,Such,强调的是名词,18,她是如此的疲惫，以致于很快就睡着了。,She was _ she _ quickly.,2.,这是一本非常有趣的小说，以致于我读了三遍。,It was _,novel,that read it three times.,3.,他跑得非常快，没人能追上他。,He runs,_ nobody can,catch up with,him.,4.,玛丽有如此多的工作要做，以致于她整天呆在办公室。,Mary had,_ to do that she stayed at her office all day.,sothat/suchthat,so,tired,that,fell asleep,such an interesting,so fast that,so much work,19,三：目的状语从句,定义：从句表达的是主句行为的目的,主要的引导词有,:,so that,，,in order that,，,20,They are hurrying,so that,they,may,not miss the train.,他们匆匆忙忙目的是为了不错过火车,They are hurrying,in order that,they,may,not miss the train,He works hard,so that,he,can,get good grades.,He works hard,in order that,he,can,get,good grades.,So that,引导的目的状语从句中常常含有情态动,词,can,could,may,might,Would,should,21,区分,In order that+,句子,So that+,句子,In order to,do,sth,to,do,sth,22,四：让步状语从句,表示尽管,.,引导词,:,though,，,although,even if,，,even though,23,though,although,though,although,在句首表“尽管”两者都可以用。,不能与,but,连用,。,下列情况只能用,though,：,as though(=as if);,好像,even if(=even though),即使,在句末表示“然而”,24,1._ there are too many people here,_ we have to find another house.A.Because;so B.Though;but,C.Since;/D./;if,2.This TV set is too dear,_ it gives you a better picture.A.or B.and C.if D.though,3._ he is very young,_ he knows,several language,A.Though;but B.Because;so,C.Though;/D.Because;/,C,D,C,25,4.He was _ tired _ he couldnt go on,working.,A.too;to B.such;that,C.so;that D.too;that,5.She was _ we all like her.,A.such a good singer B.such a good singer that,C.a very good singer that D.so good singer that,C,B,26,7.It was _ we went fishing in the open,air yesterday.A.such a nice weather B.so nice weather thatC.such nice weather that D.a nice weather so that,C,27,