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1、原因状语从句,(1),原因状语从句：,从句表示的是主句行为的原因,。通常由,because,since,as,for,引导。,(2),because,表示,直接,原因（听话人所不知的），语气最强。,回答由,why,提出的问题，只能用,because,。此外，,because,和,so,不能同用在,一个句子里。,例如：,-Why,arent,going there?,-Because I,dont,want to.,since,相当于,now that,，“因为,，既然,，,鉴于,”,表示,显然的或已为人知的理由,，语气较,because,弱,例如：,Since the rain has sto
2、pped,，,lets,go for a walk.,既然雨停了，我们出去散散步吧。,as,和,since,语气较弱，,一般用来表示,明显的原因。,由,as,和,since,引导的原因状语从句多放在,句首。,例如,：,As,he has no car,he,cant,get there easily.,Since,we have no money,we,cant,buy it.,(4)for,表示所说的理由是一种补充说明,for,引导的从句一般不放在句子的开,头。如,:I decided to stop and have lunch,for I was feeling quite hungry
3、.,Eg:,1.I was late for class yesterday _ there was,something wrong with my bike.,2.He took off his coat _ he felt hot.,3._you,cant,answer the question,Ill,ask someone else.,because,for,As/since,目的状语从句,目的状语从句,:,从句表示的是主句行为的目的,(1),通常由,so that,in order that,（为了，以便）引导。,例,:,We started early so that we cou
4、ld catch the first train.,We used the computer in order that we might save time.,(2)so that,可引导目的状语从句，此时可用,to,或,in order to,替换,将其改为简单,句,。,例如：,He got up early so that he could get to school on time.=He got up early,（,in order,）,to get to school on time.,（,3,）,so that,既可引导,目的状语从句,，又可引导,结果状语从句,。区别这两,种从
5、句的办法有两个：,A),目的状语从句里往往带有,情态动词,can,could,may,might,等。,B),从意思上看，目的状语从句往往表示的,目的很明确，不放在句首,。,例如：,Speak clearly,so that,they may understand you.,(,目的状语句,),Jack is badly ill,so that,he has to rest.,(,结果状语从句,),练习：,1.,I hurried _I wouldnt be late for class.,2.We should go by bus _ we can get there earlier.,3.
6、May I sit nearer_ I can see more clearly?,判断以下句子是目的状语从句还是条件状语从句？,so that,so that,so that,so as,to(,肯定结构,),eg.He got up early so as to catch the early train.,so as not,to(,否定结构,),eg.He got up early so as not to miss the early train.,to,eg.He got up early to catch the early train.,in order that,eg.He
7、got up early in order that he could catch the early train.,in order,to,eg.He got up early in order to catch the early train.,用于目的状语从句，还有：,结果状语从句,(1),结果状语从句由,sothat,suchthat,so that,引导。,(2)sothat,与,such.that,可以互换。在由,so.that,引导的结果状语从句,中，,so,是副词，与形容词连用。其结构是,:,“.so,+,形容词（副词）,+that+,从句,”。,例：,He was so,gl
8、ad,that he,couldnt,say a word.,Mother lives so,far away,that we hardly ever,（几乎不，从来,不）,see her.,（,2,）在由,suchthat,引导的结果状语从句中，,such,是形容词，它修饰,的可以是单数或复数可数名词，也可以是不可数名词；其结构,是,:,“.such,+a/an+,形容词,+,名词,+that+,从句”,。,例如：,1.It was such,a hot day,that nobody wanted to do anything.,2.He had such long arms that h
9、e could almost touch the ceiling.,（天花板）,有时上述两种结构是可以互换的。,例,如：,It was such,a wonderful film,that all of us wanted to see it agai,n.,=The film was so,wonderful,that all of us wanted to see it again.,(3),如果名词前由,many,much,little,few,等词修饰时，只能用,so,不用,such,。,例如：,A.Soon there were so many deer that they ate
10、up all the wild r,oses.,B.He has so little time that he,cant,go to the cinema with you.,(4),如果主从句的主语相同，并且从句是否定的形式，可以用,too.to.,句型转化,。,例如：,He was so excited that he couldnt go to sleep that night.,=He was too excited to go to sleep,5),如果主从句的主语相同，但从句是肯定的形式，可以用,adj.+enough,替,换。,例如：他够大了，可以去上学。,He is so o
11、ld that he could go to school.,=He is old enough to go to school.,练习：,1.,It is _ hot in the room _ we have to go out for a walk.,2.It was_a wonderful movie_all of us wanted to see it again.,3.There was_little water in the bottle _ the bird,couldnt,reach it.,so that,such that,such that,强化练习,一、单项选择。,1
12、,Well,stay at home if it _ tomorrow.,A,rain B,rains C,is raining D,will rain,2,We,didnt,go home _ we finished the work.,A,since B,until C,because D,though,3,She _ when I went to see her.,A,is reading B,have read C,was reading D,reads,4,_ the rain stops,well,set off for the station.,A,Before B,Unless
13、 C,As soon as D,Though,5,She looks forward every spring to _ the flower garden.,A,visit B,paying a visit C,walk in D,walking in,6,Mr.White hoped he _ China the next year.,A,would visit B,will visit C,visited D,has visited,7,I told him that the sun _ in the east.,A,rises B,rose C,has risen D,was rising,
