状语从句的时态特点

1、涉及状语从句得几种特定时态U “主将从现”原则即若主句为一般将来时，时间与条件状语从句通常要用一般现在时表示将来，而不能直接 使用将来时态。如:Ill give her the telex when she es、她来时把电传交给她。ril return the book as soon as I have read it这书一瞧完我就送还qHell have fbiir years at university after he leaves school、她中学毕业后要上四年大学。2、since与完成时since引导时间状语从句时，其主句通常要用现在完成时,有时也用现在完成进行时。如:She

2、 has had another baby since I saw her Iasi、从上次我见到她以来?她又生了一个He has grown an inch since I saw hinu 我上次见到她以后她已长高了一英寸。注：当主句为Tl + be + 一段时间时，则通常用一般现在时代替现在完成时。如:Its more tliaii three years now since I saw her last、我们已有三年多没见而了。由 no sooner、3、特定句式得时态 、than, hardly scarcely.when引出得时间状语从句贞主句通常用过去完成时，从句通常用一般过去时

3、0如:Hardly had he arrived when she started plaining她刚到她就抱怨JS来。No sooner had he gone to sleep than the telephone rang. 她刚睡着电话铃就响了 We had no sooner set out than a thunderstorm broke、我们刚出发就下起一阵雷眾qNo sooner had she agreed to marry him than she started to have terrible doubts、 她 刚同意嫁给她她就开始产生可怕得疑虑。状语从句得时态特

4、点一般情况下，时间与条件状语从句得谓语动词一般用“一般现在时”表示“ 一般将來时，用T见在完成时,，表示将來完成时。例如:I will call you as soon as I arrive in Beijing、 我至Ud匕京就给您打电话。（这就是由as soon as引导得时间状语从句，从句中得谓语动词arrive就是一般现在时，表示一般将來时，决不可用will arrive）As soon as I have finished this work, I will go home 我_完成此工作，就回家。（从句中得谓语动词用现在完成时have finished,表示将來完成时，决不可用w

5、ill have finished）If he es back, please let me know、如果她回来了，请通知我。（从句中得谓语动词用es back,表示一般将來时，决不可用will e back）状语从句讲解与练习状语修饰动词、形容词.副词或整个句子。通常由副词.介词短语、动词不定式.分词与从句等担当。例如:1、 Naturally , our grandparents were pleased to get our phonecall .（副词）2、We worked hard , from sunrise to sunset（介词状短语）3sTo help my disab

6、led aunt , I spend an hour working in her houseevery day % （不定式）4sSeen from a distance , the farmhouse looked deserted、 （过去分词）OsI know how to light a camp fire because I had done it before（原因状语从句）状语得位置比较灵活，可以位于句首.句末或句中。enough用作状语修饰形容词与副词时必须后置。状语从句主要用來修饰主句或主句得谓语。一般可分为九大类，分别表示时间.地点、原因.目得、结果、条件、让步.比校与方

7、式。尽管种类校多,但由于状语从句与汉语结构与用法相似，所以理解与掌握它并不难。状语从句得关键就是耍掌握引导不同状语从句得常用连接词与特殊得连接词即考点。现分别列举如下:1.时间状语从句till, until常用引导词:when,as,while,as soon as,before, after, since ,特姝弓丨导词：the minute, the moment, the second, every time, theday,the instant, immediately , directly, no sooner than,hardly when, scarcely whenI di

8、dn t realize how special my mother was until I became an adult.While John was watching TV, his wife was cooking、The children ran away from the orchard（果园）the moment they sawthe guard、No sooner had I arrived home than it began to rain、Every time I listen to your advice, I get into trouble2.地点状语从句常用引导

9、词:where特殊引导词:wherever, anywhere, everywhereGenerally, air will be heavily polluted where there are factoriesWherever you go, you should work hard、3原因状语从句常用引导词:because, since,as, for特殊引 导词：seeing that, now that, in that, considering that, giventhat、My friends dislike me because I m handsome and succe

10、ssful、Now that everybody has e, let s begin our conference、The higher ine tax is harmful in that it may discourage people fromtryingto earn moreConsidering that he is nomore than 12 years old, his height of1、 80 m isquite remarkables4.目得状语从句常用引导词：so that, in order that特殊引导词：lest, in case, for fear t

11、hat, in the hope that, for thepurpose that, to the end thatThe boss asked the secretary to hurry up with the letters so thathe could sign them、The teacher raised his voice on purpose that the students in theback could hear more clearly、5. 结果状语从句常用引导词:so that, so that, such that,特殊弓I导词：such that, to

12、the degree that, to the extent that, tosuch a degree that,He got up so early that he caught the first busIt s such a good chance that we must not miss itsTo such an degree was he excited that he couldn t sleep last night6. 条件状语从句常用引导词：if, unless,特殊引导词：as/so long as, only if, providing/provided that.

13、supposing that, in case that, on condition thatWe 11 start our project if the president agrees.You will certainly succeed so long as you keep on trying、Provided that there is no opposition we shall hold the meetinghere、7. 让步状语从句常用引导词:though, although, even if, even though特殊引导词：as （用在让步状语从句中必须要倒装）,wh

14、ile （ 一般用在句首 ),no matter in spite of the fact that, while, whatever, whoever,wherever, whenever, however, whicheverMuch as I respect him, I can t agree to his proposal、尽管我很尊敬她，我却不同意她得建议。The old man always enjoys swimming even though the weather isroughsNo matter how hard he tried, she could not chan

15、ge her mind.He won t listen whatever you may say、8. 比较状语从句常用引导词:as（同级比较），than（不同程度得比较）特殊引导词：the more the more ；just as ，so；A is to Bwhat /as X is to Y; no more than： not A so much as BShe is as bad-tempered as her mother、The house is three times as big as ours.The more you exercise, the healthier yo

16、u will be、Food is to men what oil is to machine食物之于人，犹如油之于机器。9. 方式状语从句常用引导词：as, as if, how特殊引导词：the wayWhen in Rome, do as the Roman do、She behaved as if she were the bossSometimes we teach our children the way our parents have taughtus、10、状语从句得简化金状语从句得省略状语从句同时具备下列两个条件:主句与从句得主语一致，或从句主语为it;从句主要动词就是be

17、得菜种形式。从句中得主语与be动词常可省略。例如:When ( the museum is ) pleted , the museum will be open to the publicnext year 、He 11 go to the seaside for his holiday if (it is ) possibles另外，比较状语从句经常省略。例如:I m taller than he (is tall )、The higher the temperature (is), the greater the pressure (is )就状语从句而言，有时为了使语言言简意赅，常常将状

18、语从句进行简化。状语从句得简化现象在口语中较为普遍，而且在高考中得复现率也较高。因此，有必要对其进行全面、透彻得了解。状语从句得简化现象常存在丁以下五种状语从句中:由if, unless等引导得条件状语从句;由although, though, even if / though等引导得让步状语从句;由when, while,as.before, after, until / till 等as,引导得时间状语从句;由as, as if等引导得方式状语从句;由as, than等引导得比较状语从句。下而针对这五种情形作一归纳。(1)当状语从句得主语就是it,且谓语动词就是be时,it与be要完全简化

19、掉。例如:If (it is) possible, he will help you out of the difficulty 女U果可能得话,她会帮您摆脱困境。You must attend the meeting unless (it is) inconvenient to you除非情况对您來说不方便,否则您必须出席这次会议。(2)当状语从句得主语与主句得主语一致时，从句可以将主语与be动词简化掉。常用于以下几种情形:a、连词+形容词As (he was) young, he learned how to ride a bike、她小时候就学会了骑自行车。Whenever (she i

20、s) free, she often goes shopping 她有空就去逛商店。Work hard when (you are) young, or you 11 regrets 少壮不努力，老人徒伤悲。b、连词+名词While (he was) a young boy, he was always ready to help others她在孩提时代就乐于助人。Although (he was) a farmer, now he is a famous director 尽管她曾就是个农民，而现在就是位著名得导演了。c、连词+现在分词As (she was) walking along the river bank, she was singing a popsong.她沿着河堤边走边唱着流行歌曲。Although (he is)