初中条件状语从句-精讲和练习含答案

中学英语：条件状语从句一.条件状语从句的概念条件状语从句，也就是说，在某些条件下会发生一件事。英语中引导到连接词if或unless等的副词子句称为有条件的。条件是指某件事发生后(副词子句内)才会发生一件事(咒语章)，通常译作“如果，如果”。在条件状语从句中，主句的时态要遵循“主客现行”的原则。如果主句是未来时态，从句就用一般的当前时间代替未来时态。二.条件状语从句的指导1.If conj .如果If you ask him，he will help you.你向他求助，他会帮你的。If you fail in the exam，you will let him down.考试不及格会让他失望的。2.unless conj。否则.何时(if.not.)否则you will fail to arrive there in time unless you start earrier。如果不早点出发的话，就不能按时到达那里了。Unless it rails，the game will be played。只要不下雨，比赛就照常进行。3.so/aslong as conj。只要you may borrow my book as long as you keep it clean。只要保持书的干净，就可以借我的书。三.关于条件句的时态，一般有以下三种情况：1、条件状语从句的主句是一般未来，那么从句一般用现在。When I grow up，I ll be a nuse and look after patients。我长大了要成为护理病人的护士。2.如果周口是命令型的，寺庙通常使用现诗。If you want to have a chat，call me up。想聊天的话就打电话。3.如果主句包含情态动词，根据需要一般使用现在。you should be quiet when you are in the reading room。阅览室里要安静。四。知识扩展1 when、before、as soon as等的时间状语从句也适用于主和弦时原则，即如果主子句是一般未来，则使用一般和弦时原则。ill tell her the good news when she comes back。她回来的时候我会把这个好消息告诉她。she will give you a call as soon as she returns。她回来后我会给你打电话的。2.If条件语句的同义词：命令式，and /or未来时态的声明。Workhard，and you will make great progress=you work hard，you will make great progress。如果努力学习，会取得很大的进步。Hurry up，or you will be late。=if you dont hurry up。you will be late。不快点的话会迟到的。条件副词子句练习(包括答案)一.单一选择1.if you _ _ _ _ _ to the party，youll have a great time。A.will go B. went C. go D. going2.it will be a long time _ _ _ _ _ Peter _ _ _ his work。A.since、has finished b.after、finishes c.when、will finish d.before、finishes。3.whatwill father _ _ _ _ us from Japan？A.take B. bring C. carry D. make4.Weifang is famous _ kitesA.for B. to C. on D. with5.I _ _ _ _ her the answer if she _ _ _ me。A.can tell、will ask B. will、will ask c.would tell、ask d.will tell、asks6.what are you going to do tomorrow？-we ll go to the library tomorrow if it _ _ _。A.isn t rain b . rain c . won t rain d . doesn t rain7.do you know when he will come back tomorrow？-sorry，I dont know。when he _ _ _ _ back，Ill tell you。A.comes B. will come C.come D. may come8.what will you do if you _ _ _ _ _ _ to the old folk s home visit？A.go B. went C. going D. will go9.if I eat _ _ _ food，Ill be very fat。A.too many b . many too c . too much d . much too10.I ll give the book to him if he _ _ _ here next Sunday。A.will come es c . is coming d . came11.there _ _ _ an English film in our school tomorrow。A.is going to have b . will have c . is going to be d . has12.could you tell us where _ _ _ _ _？A.will the next Olympic games held b . the next Olympic games will be heldC.would the next Olympic games be held .the next Olympic games would be held13.when my mother returned last night，I _ _ _ a book。A.reading b . am reading c . was reading d . am going to read14.what _ _ _ _ when it began to rain？A.do，do B. were，doing c.are，doing d.did，do15.I ll wake you up when he _ _ _ back。A.will b . is going to come es eanswers:1-5 CDB ad 6-10 DAA cb11-15 c bcbc第二，用给定单词的适当形式填空。1.if you _ _ _ _ _ _ _ _ _ _ (feel) tired，you _ _ _ _ _ _ _ _ _ _ _(have)to have2.where _ _ _ _ _ _ he _ _ _ _ _(see)the film if he _ _ _ _ _ _ _ _ _ _(have)time3.if there _ _ _ _(be)fewer trees，there _ _ _ _ _ _(be)more pollution。4.he _ _(dress)more casually if he _ _ _(not work)on weekends。5.if Marcia _ _ _ _ _ _ _(实时)alone，she _ _ _ _ _ _ _(keep)a pet parrot。6.lana _ _ _ _ _(buy)a new dress if the old one _ _(be)out of style。7.the twists _ _ _ _ _ _ _(fight)if they _ _ _ _ _ _ _ _ _(argue)。8.I _ _ _ _ _ _(have)a bake sale if I _ _ _(need)money for education。9.Peter _ _ _ _(send)me a beautful southvenir if he _ _ _ _(visit)Spain。10.if Mr . green _ _ _ _ _ _ _ _(say)I am hard-working，my parents _ _ _ (feel) glad。11.I _ _ _ _ _ _ _(go)to the beach if it _ _ _ _ _ _ _(not rain)this week。12._ _ _ _ _ _ _ _ they _ _(have)a match if the p . e . teacher _ _(be)busy？13.he _ _ _ _(write)a letter to his grandparents if he _ _ _ _(get)his report card this week。14.if she _ _ _ _ _ _ _(get)up late，she _ _ _ _ (not catch) the early bus。15.彼得_ _ _ _(major)in English if he _ _ _ _(pass)the exams in Peking university。Answers:1 feel，will have 2 will see has 3 are，will be 4 will dres，doesnt work 5 lives，will keep 6 will buy，is 7 will fight，argue 812 will have is 13 will writes，gets 14 gets，wont 15 will major，passes完成III文章1.他到晚了会发生什么事？what _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ late？2.努力学习的话，会取得好成绩的。If you _ _ _ _ _ _ _ _ _ _ _ _，you _ _ _ _ _ _ _ _ _ good _ _ _3.他如果看电视看得太久，他父母会不高兴的。If he _ _ _ _ _ TV too long，his parents _ _ _ _ _ _ _ _ _ _ un happyy4.我们为他组织生日聚会，大家都会来的。every one _ _ _ _ _ _ _ _ if web _ _ _ _ _ _ a birth day party _ _ _ _ _ _ _ him5.如果明天不下雨，我就和你一起去公园。If it _ _ _ _ _ _ _ _ _ _ _ _ tomorrow，I _ _ _ _ _ _ go to the park _ _ _ _ _ _ you如果她睡过头，上学就会迟到。she _ _ _ _ _ _ _ _ _ _ _ _ _ _ if she _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _如果他没有时间，他就不会帮助你。if he _ _ _ _ _ _ _ _ _，he _ _ _ _ _ _ _ _ _ you。8.如果汤姆考试不及格，他就没有机会上高中了。Tom _ _ _ _ _ _ _ have the _ _ _ to go to the high school if he _ _ _ _ _ the exams。9.这个男孩打碎窗户，房东会生他的气。If the boy _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _，the house owner _ _ _10.如果明天不下雨，我就去郊游。_ _ _ _ _ _ _ _ _ _ _ _ _ _ _