初中英语状语从句讲解跟练习.doc
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1、状语从句 (Adverbial Clause) 状语从句指句子用作状语时,起副词作用的句子。它可以修饰谓语、非谓语动词、定语、状语或整个句子。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。状语从句一般由连词(从属连词)引导,也可以由词组引起。从句位于句首或句中时通常用逗号与主句隔开,位于句尾时可以不用逗号隔开。I will give you the information as soon as I get it.Once you start to smoke, it is hard to give it up.在时间和条件状语从句中,通常要用一般现在时表示将来意义
2、,而不能直接使用将来时态:Tell him as soon as he arrives. 他一来就告诉他。(不能用will arrive)I wont go if it rains tomorrow. 要是明天下雨,我就不去。(不能用will rain)有时也可见到 if you will 这样的说法,但那不是将来时态,而是表示意愿或委婉的请求(此时的 will是情态动词):If you will wait a moment, Ill fetch the money. 请等一下,我就去拿钱。状语从句即指在主从复合句中用作状语的从句。状语从句根据其用途可分为时间状语从句、地点状语从句、原因状语从
3、句、结果状语从句、目的状语从句、条件状语从句、方式状语从句等:When she saw it, she turned red. 她看到它时脸红了。(时间状语从句)He was angry because I was late. 他很生气因为我迟到了。 (原因状语从句)If you come, he抣l be pleased. 如果你来,他会高兴的。(条件状语从句)He was so angry that he couldnt speak. 他气得话都说不出来。(结果状语从句)Although he is poor, hes happy. 虽然穷,但他仍很快乐。(让步状语从句)You must
4、do as I tell you. 你必须按我告诉你的去做。(方式状语从句)Put it where you can reach it. 把它放在你可以拿到的地方。(地点状语从句)Speak clearly so that they may understand you. 讲清楚些,以便他们能理解你。(目的状语从句)注意until句型,1、not .until句型,是直到.才做某事(do sth )。这里的动词要用短暂性动词。2、unitl句型。这里的动作要用延续性动词。when引导时间状语从句表示主句动作已发生。while引导时间状语从句表示主句动作正在进行。尽管 as 和 while 均可
5、用作从属连词引导时间状语从句,表示“当的时候”,但两者有一个重要区别,就是这样用的 as 从句的谓语不能是状态动词。初二下册英语语法专项练习状语从句(一)一、单项选择1_ you eat bad food, you may be ill.A Before BUntil CIf DWhich2We wont have our sports meeting if it _ tomorrow.ArainsBwill rain Crained Drain3He _ wait until the rain _ .Awont, will stop Bwont, stop Cwill, stopsDwill
6、, will stop4As soon as Jane _ here, Ill post the letter to Mike.Aleave Bwill leave Cleaves Dleft5It was already five oclock _ we got home.Awhen Bwhile Cbecause Dif6Im going to the post office. _ youre there, can you get me some stamps?AAs BWhile CBecause DIf7Joan and Mary havent seen each other_they
7、 left school five years ago.Aas Bbefore CafterDsince 8I will let you know about it as soon as I _ the news. Awill get Bgets Cgot Dget 9_ you dont hurry up, you _ the train.AWhen, miss BIf, will miss CWhen, will missDIf, miss10The boy always spends his time _ speaking English.Ato practice Bpractice C
8、practicing Dpractices11Youd better not read todays newspaper because there is _ in it.Asomething interesting Banything new Cimportant thing Dnothing special12_ he _ look at a map?ADoes, need BNeed, to CDoes, need to DNeeds, to13The policeman told the little boy _ football in the streetIts dangerous.
9、Anot play Bnot playing Cnot to play Dto play14Harry Potter is an _ book for children, but my cousin doesnt seem at all _ in it.Ainteresting; interesting Binterested; interestedCinteresting; interested Dinterested; interesting15He likes _, but he doesnt like _ today because it is too cold.Ato swim; s
10、wimming Bto swim; to swim Cswimming; to swim Dswimming, swimming二、用方框中的单词填空When before after as since while until as soon as 1Mum was making cookies in the kitchen _the telephone rang.2I was watching TV _ my wife was cooking.3He had worked in a factory for two years _ he went to college.4I shall pla
11、y chess with you _ I finish watching TV.5He didnt get to the airport _ it was dark.6She sang _ she went along.7I havent heard from him _ he went to America.8We found the books two days _ he had gone away.as 表示伴随的状态,且前后时态一致。有下列常见的问句,作为从句出现,是“不改变语句顺序”的。1.Whats the matter?2.Whats wrong ?3.Whats up 4.Wh
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