1、目的that, so that, in order that, in case, for fear that, lest结果so that, so that, such that, but that 一、时间状语从句1、while, when, whenever和as的用法比较(1)while常表示一段较长的时间或一个过程,强调主句的动词和从句的动词所表示的动作或状态是同时发生的。它不能表示一时性或短暂的动作。Dont talk so loud while( as) others are working.别人工作时,请勿大声说话。(2)when引导的时间状语从句,可指时间的一点,也可以指一段时
2、间,从句的谓语动词可用终止性动词,也可用持续性动词。when引导的从句表示的具体的时间,从句的动作和主句的动作可以同时,也可以先于主句的动作。Whenever指任何一个不具体的时间。It was raining when we arrived. 我们到达时,天正下着雨。(动作同时,指时间点)When you read the poem a second time, the meaning will become clearer to you.当你再读一遍这首诗,你就更清晰它的含意。(动作有先后,指时间点,不能用while)Come whenever you like. 你爱什么时候来就什么时候
3、来。(3)as用as时主句和从句的动作往往同时发生,具有延伸意义,一般同延续性动词连用,有时可译作“一边一边”。As time went on, his theory proved to be correct.随着时间的推移,他的理论被证明是正确的。As(when)he finished the speech, the audience burst into applause.他讲话结束的时候,听众掌声雷动。(指一点时间不能用while)2、名词词组引导时间状语从句有时名词every time(每次),the next time(下一次),the next day(第二天),the momen
4、t(一就), the instant, the second, the year等,也可起从属连词的作用,引导时间状语从句。Every time you get back at night, you drop your shoes on the floor.你每一次晚上回来,都把鞋子丢在地板上。3、副词作连词用引导时间状语从句有些副词如instantly, immediately,instantly,directly, presently等也可起从属连词的作用,引导时间状语从句,表示一就的意思。I recognized her instantly I saw her.我一看见她就把她认出来了。
5、4、since和before的用法比较两者均可用于It+ be.+since/before-从句的句型。区别在于since表示“自从以来”,所在主、从句的谓语动词的时态关系是:It is/has been sometime since sb. did sth.。而before的含义是 “(过了多久)才”,主、从句的时态关系是:It was/had been some time before sb. did sth.。表过去和将来时,两者相应的句型分别是:It was some time since sb. had done sth.和It will be some time before sb
6、. does sth.It is 30 years since he joined the revolution. 他参加革命己三十年了。It was three days before he came back. 他三天后才回来。It was not long before he came back. 不久他就会来了。二、地点状语从句地点状语从句一般由where(在地方; 那里),wherever(无论哪里)和everywhere(在每一个地方)引导。After the war, a new school building was put up where there had once be
7、en a theatre. 战后,一所新学校在以前的剧院处建成。You should make it a rule to leave things where you can find them again. 你应当养成惯例,将东西放在你能找到的地方。She found her calculator where she lost it. 他在她丢的地方找到了计算器。Everywhere they went, the distinguished guests were warmly welcomed.贵宾每到一处都受到了热烈的欢迎。注意:where除了表示地点外,还可以表示条件、对比和让步。Wh
8、ere there is a will, there is a way.有志者事竟成。(条件)We want to stay at home, where children would rather spend the holiday in the country.我们想留在家里,而孩子们却愿到乡间度假。(对比)Wherever I went, the dog followed me. 无论我走到哪里,这只狗总跟着我。(让步)三、原因状语从句原因状语从句一般由because(因为),since(既然),as(由于),now that(既然,因为)等连词引导1、because, since, a
9、s, for和now that引导原因状语从句(1)because表示直接的原因或理由,表示原因的语气最强,常表示必然的因果关系。回答以why引起的特殊疑问句,只能用because。 Jane wore a raincoat because it was raining.因为天下雨,所以詹穿着雨衣。(2)since表示对方已经知晓、无须加以说明的原因或事实,语气比because稍弱。Ill do it for you since you are busy.既然你忙,我来替你做吧。 Since you insist, Ill go.既然你坚持,那我就去。表示的往往是十分明显的原因,听者或读者已经
10、知道或能看得出来,语气较弱,只附带说明,比较口语化。We had better hurry as its getting dark.因为天快要黑了,我们最好快点。As you object, Ill change the plan.由于你反对,我将改变计划。(4)forfor是并列连词,它引导的分句不表示直接的原因,而是用来附带解释或说明前面一句的情况。for引导的分句常位于第一分句之后,它们之间用逗号隔开。It must have rained last night, for the ground is wet this morning.昨晚准是下雨了,今天早上地面还是湿的。The day
11、breaks, for the birds are singing.小鸟在歌唱,一定是天亮了。(5)now that意为既然,与since同义,但更突出事实本身。Now that everyone is here, lets begin our meeting.既然大家都来了,我们就开始开会吧。Now that I am well again, I can go on with my work.我既然恢复了健康,那就可以继续工作了。2、seeing that, considering that和in that引导原因状语从句 这几个连词同since, as 近义,都有“鉴于某个事实,原因”是之
12、意。 Considering that hes only been learning English a year, he speaks it very well.鉴于他只学了一年, 他英语讲得就是很好。 Seeing that he was ill, they sent for the doctor.鉴于他病情严重,他们派人请医生。 In that she is ill, she feels unable to do it.因为病了,她觉得不能做那件事。3、not thatbut that引导原因状语从句这是一种加强语气的表示原因的结构,意为“不是因为,而是因为”Not that I don
13、t like the film, but that I have no time for it.不是因为我不喜欢这部电影,而是因为我没时间看。The soldiers essential honor was not that he killed his enemy, but that he was willing to die.军人的真正光荣不是杀敌,而是不惜牺牲。四、目的状语从句1、that,so that,in order that引导目的状语从句目的状语从句由that,so that,in order that等引导。从句中的谓语动词前常有情态动词may、might、can、could、
14、will, would等。John shut everybody out of the kitchen so that he could prepare his grand surprise for the party. 约翰把其他人关在厨房外,目的是能够为晚会烹饪出人意料的东西。These men risk their lives in order that we may live more safely. 这些人甘冒生命危险,是为了让我们活得更安全些。2、lest, for fear that和in case引导目的状语从句 这三个连词词组的意思是“以防,以免”。lest的从句一般要用虚拟
15、语气,形式是“should+动词原形”或省掉should。for fear that和in case从句一般用虚拟语气,但有时也可以用陈述语气。I obeyed her lest she should be angry. 我得顺着她,免得她生气。Take a hat with you in case the sun is very hot. 倘若太阳很利害,你就把帽子戴上。五、结果状语从句1、so that,sothat, suchthat引导结果状语从句 So difficult did I feel it to live in an English-speaking country tha
16、t I determined to learn English well.我感到在讲英语的国家里生活太难了,因此我决定学好英语。He worked hard so that he passed the exam. 他学习很努力,结果通过了考试。He spoke for such a long time that people began to fall asleep.他讲了那么长时间,人们开始打起瞌睡了。2、sothat与suchthat的区别这两种结构都可引导结果状语从句。so是副词,后接形容词或副词;such是形容词,后接名词。(1)单数名词在so.that与such.that中间出现的是
17、单数名词,且该名词前有形容词修饰时,这两种结构可互换,但要注意它们的词序不同:such+ a/an+形容词十名词=so+形容词+a/an+名词。She is such a good teacher that all of us love her.= She is so good a teacher that all of us love her.她是一位很好的老师,我们都敬爱她。(2)不可数名词或复数可数名词如果被修饰的是不可数名词或复数可数名词时,一般须用such.that。He made such rapid progress that before long he began to wr
18、ite articles in English.他进步很快,不久就开始用英语写文章。(不可数名词)They are such interesting books that we all want to read them.这些书是那么有趣以致我们都想读一读。(复数可数名词)(3)名词前有many,much,little,few修饰时如果不可数名词或复数可数名词前有many,much,little,few修饰时,则用sothat。ve had so many falls that Im black and blue all over.我摔了好多次跤,周身青一块紫一块的。George had so
19、 little money that he had to get a job.乔治没有钱,所以他不得不找工作干。They are such little children that they cant do anything.他们是小孩,什么事情都干不了。教你巧学巧记:名前such,形、副so,多多少少也用so。little属特殊,“小”用such,“少”用so。3、如何判断so that引导的目的状语从句与结果状语从句(1)当表达的含义是“为了”、“以便”时,为目的状语从句;当表达的是“以至于”、“因此”含义时,为结果状语从句。If you do know, answer in a loud
20、 enough voice so that all the class may hear.(目的状语从句)如果你的确知道,应大声回答,以便让全班学生都可以听见。It rained hard the day before yesterday, so that she had to stay at home.(结果状语从句)前天雨下得很大,因此她只好呆在家里。(2)当从句的谓语动词有情态动词can, could, may, might等时,是目的状语从句;当从句里没有情态动词,且谓语动词是一般现在时(过去时)、现在完成时等时态时,是结果状语从句。We stopped at Salt Lake Ci
21、ty so that we could(might)visit the monument to seagulls. (目的状语从句)我们在盐湖城逗留,以便可以参观为海鸥修的纪念碑。They have walked a long way, so that we are all tired. (结果状语从句)他们走了很长的路,所以都很累。(3)当从句之前的so that可用in order that代替时,是目的状语从句;反之,是结果状语从句。We now study hard so that we may work well in the future.(=We now study hard i
22、n order that we may work well in the future. (目的状语从句)我们现在努力学习是为了将来更好地工作。(4)当so that之前有逗号时,是结果状语从句;反之,是目的状语从句The story is very interesting, so that I like it very much.(结果状语从句)这部小说很有趣,因而我非常喜欢。六、比较状语从句比较状语从句一般由asas(和一样),not as/soas(与不一样),than(比),the more, the more(越越)引导。The director gave me a better o
23、ffer than he gave Dick.导师给我的提议比给狄克的好。In recent years travel companies have succeeded in selling us the idea that the further we go, the better our holiday will be.近几年旅游公司已成功地对我们公众宣传了去得越远,假日越好的观点。John plays football as well as, if not better than, David. 如果说约翰的足球踢的不比大卫好,至少和他踢的一样好。I cant run as/so fas
24、t as he can. 我不能跑得他那样快。七、让步状语从句让步状语从句由though,although,as,even if (though),however,whatever,whoever,whenever,no matter +wh词,等引导。1、even if, even though, although,though引导的让步状语从句 这四个词(词组)都有“虽然、即使、尽管”的意思。even if和even though带有较强的意味,语气比although和though强。though比although通俗,但不如although正式,都不能和but连用,但可以和yet, st
25、ill或nevertheless连用。可以放在主句前面也可以放在主句后面。even if,even though所接的句子常用虚拟语气。We wont give up even if we should fail ten times.即使是我们失败十次,我们也不会放弃。 He might have given you more help,even though he was very busy尽管他很忙,他可能给了你更多的帮助。2、as或though引导让步状语从句形容词+ as/though+ 主与+谓语副词动词分词名词(1)由as或though引导让步状语从句用倒装语序Proud as t
26、hese nobles are, he is afraid to see me.这些贵族尽管很傲慢,他们却害怕见我。(2)如果表语为单数可数名词,这个名词不带冠词 12-year-old girl as she is, she has had a good command of English.她虽然只是个12岁的女孩,但是她已经熟知英语。Child as he is,he knows a lot.虽然他还是个孩子,却懂的很多。(3)如果句中谓语包含情态动词或助动词,则将实意动词放在as之前Try as I might,I couldnt lift the stone.我使多大劲儿也搬不动这块
27、石头。Praised as he was, he remained modest.他虽然受到表扬,但仍然保持着谦虚。(4)如果句中谓语仅有实意动词,则将实意动词(原形)放在as之前,并在主语后面加助动词do, does, did或will。Torture her as they did, the enemy got nothing out of her.虽然敌人拷打她,却没有能从她嘴里得到什么。 Fail as he did, he would never give up.尽管他失败了,但他决不会放弃。注:但是,如果在这种情况下,句中谓语有副词修饰,则将副词放在as之前。Again and a
28、gain as he failed, he didnt lose heart.他虽然多次失败,但仍不灰心丧气。Much as I admire his courage, I dont think he acted wisely.我虽然佩服他的勇气,但是我认为他这样做是不明智的。3、由no matter+ wh词和由疑问词ever引导让步状语从句由no matter引导,表示“不管;无论”;由疑问词ever引导,表示“不管,不论”。这类词有:whatever,whichever,whoever,however, whenever,wherever等,他们相当于no matter+ what(which,who,how,when, where),都不能与but,so,and等并列连词同时使用。Well have to finish the job, however(no matter how) long it takes. 不管需要多长时间,我们都一定完成这项工作。No matter what(Whatever) you do, dont tell him that I told you this. 无论你做什么,别告诉他我对你说过这件事。4、由whetheror引导让步状语从句由whetheror引导让步
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