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1、高三英语精品资源年高三英语一轮复习名师语法讲座状语从句专项精讲精练基本用法：状语从句在句中只做状语，可修饰主句中的动词、形容词和副词等。状语从句由从属连词引导，位置可放在句首或句末。放在句首时，从句后面常用逗号；放在句末时，从句前往往不用逗号。状语从句根据含义可分为时间、地点、原因、目的、结果、方式、让步、条件、等八种。状语从句的考查主要在从属连词、时态和语序上。从属连词的选择主要从连词的意义入手；时态主要从一致性和先后关系考虑；语序是陈述句的语序。一、时间状语从句常用以下连词：when, as, while, before, after, since, till, until, as soo
2、n as, hardlywhen, no soonerthan, the moment, etc.1.when引导的从句：从句的动作可以和主句的动作同时进行，也可以先于或后于主句的动作发生。Eg. I was going out when Li Hua came. When it rains, I go to school by bus.They continued their way when the storm had passed.The train had left when I got to the station. I shall tell her the news when sh
3、e comes.2.as引导的从句：从句的动作可以和主句的动作同时进行。As the students walked along the river, they sang happily.3.while引导的从句：强调某一段时间主句和从句的动作在同一时期进行。Keep an eye on my baby while Im busy.While有时表示对比， I was doing my homework while he was listening to the radio.4.before引导的从句：表示主句的动作发生在从句的动作之前。I didnt know any English bef
4、ore I came here.I had finished my homework before my parents came here.5.after引导的从句：表示主句的动作发生在从句的动作之后。After he closed the door, he left. After he had finished school he went to the university.6. since引导的从句：从句一般表示动作的起点，用过去时。主句表示动作的延续的情况，一般用现在完成时。如果主句表示的不是延续的动作而是表示目前的状态，可用一般现在时。 Since he entered the u
5、niversity, he has made great progress in maths studies.It is 20 years since she joined the party.7. till/until引导的从句：1)表示“直到”，主句和从句都用肯定式；2）表示“直到才”，主句用否定式，从句用肯定式。Eg. They worked till it was dark. She didnt go to bed until she had reviewed her lessons.8. as soon as引导的从句：主句和从句一般都用过去时；当主句的时态是一般将来时，从句要用一般
6、现在时代替一般将来时。Eg. He began to read English as soon as he came to the classroom. He will write to me as soon as he arrives there.二、原因状语从句 常由 because, since, as引导.Eg. He didnt come to school because he was ill. （表示直接的因果关系）As the weather was fine, we decided to go on a trip. （表示明显的原因）Since everybody is he
7、re, lets begin our meeting. （表示附带的原因）三、地点状语从句： 常由where, wherever引导.Eg. Ill go where the living conditions are difficult.Wherever you are , you should work hard. Make marks where you dont understand.四、条件状语从句：常有if, unless, so/as long as, once等连接词或连接词组引导Eg. Ill go to the Great Wall tomorrow, would you
8、like to go with me?I shall go unless it rains. You may use the book as long as you return it on time.五、比较或方式状语从句：常由asas, than, the morethe more, as , as if等引导.Eg.Im as tall as you, but you are stronger than I.The more you practise ,the more knowledge you will get. We should study as hard as Lenin st
9、udied.The old man runs very fast as if he were a young man.六、目的状语从句：常由so that, that, in order that引导.Eg. He set out early (so) that he could catch the first bus. She takes notes carefully in class so that she may use them when she reviews her lessons.七、结果状语从句：常由so that, sothat,suchthat等词引导.Eg. The s
10、tudents did the exercises so well that the teacher praised them in class. It is such a heavy box that nobody can move it away. He got up early so that he caught the first bus.八、让步状语从句常由though, although, even if. however, whatever, no matter how/who等词引导.Eg. Although they did heavy work that day, they
11、 were all in high spirits. She carried on the job even if she has had a bad cold for several days now. However much I tried, I failed to work out the maths problem.状语从句的特殊连词状语从句是高考中从句考查的热点。引导状语从句除用常规连词以外，我们还常见到一些表现形态特殊的连词，这类连词可分为以下六种：一、名词型连词表时间的有the moment, the instant, the minute, the second（一就）eve
12、ry/each time（每当，每次），next time （下次），the last time（上次）， the first time（第一次）；表达方式和条件的有the way（按照，像，如果照这样下去）；表让步的有no matter（无论）等.Eg. The moment he entered the room, Bill fixed the chain across the door. You must do the way (=as) your teachers teach you. The way(=if) you are studying now, youll make much
13、 progress. No matter how(=However) badly they had slept she was always up early.二、副词型连词instantly, immediately/ directly（一 就），其语气依次由强到弱；now that（既然）；everywhere（每一的地方）和wherever意思接近；once（一旦）等.Eg. The young lady rushed into the room immediately he heard the noise.Now that they could ride horses, it beca
14、me easier to hunt the bison.Everywhere I go, I find the same thing.对比以下句子：I have looked for my pen everywhere.(adv.)She went to see him immediately after she got the letter.(adv.)一 分词型连词这类分词失去了日常分词作状语时应考虑的句子主语的逻辑关系，完全成了连词，主要表示条件、原因和让步关系，有providing，provided（多用于正式文体）（that）（假如，只要），supposing（用于问句），suppo
15、se（that）（假如）， seeing （that）（既然），considering （that）（考虑到，因为），granting/ granted (that) (即使)等。Eg. She will go provided her friends can go also.Supposing/ Suppose she doesnt come, what shall we do?Seeing quite a few comrades were absent, we decided to put the meeting off.Considering theyre just beginners, theyre doing quite a good job.二 介词名词型连词on condition that（条件是），in case（如果；以防）in order that（为了，以便）， for fear that（以防），by the time（到时），in spite of the fact that/in spite that（尽管）, in view of the fact（鉴于）等。Eg. Well let you use the room on condition that you keep it cle
