初中英语――If引导的条件状语从句(整理版).doc

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1、在句子中做条件状语的从句称为条件状语从句。引导条件状语从句的连接词有：if,unless,as/solongas，once等1.if引导的条件状语从句表示在某种条件下某事很可能发生。Ifwepaymuchattentiontotheearth,we'llhaveabetterworld.注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。Whatwouldhappeniftherewerenowater?如果没有水会怎样？2.unless引导的条件状语从句YouwillfailinEngli

2、shunlessyouworkhard.3.as/solongas引导的条件状语从句Solongasyou'rehappy,iwillbehappy.4.once引导的条件状语从句Onceyoubegin,neverstop.提示：在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过去将来时。Fathertoldmeifiworkedhardhewouldbuymeagift.if条件状语从句的时态练习二、用所给词的适当形式填空1.Ifyou________(feel)tired,you_____________

3、__(have)tohavearest.2.Where_______he_________(see)thefilmifhe________________(have)time?3.Ifthere__________(be)fewertrees,there_______________(be)morepollution.4.He_____________(dress) morecasuallyifhe________________(notwork)onweekends.5.IfMarcia_____________(live

4、)alone,she___________________(keep)apetparrot.6.Lana________________(buy)anewdressiftheoldone____________(be)outofstyle.7.Thetwins______________(fight)ifthey_______________(argue).8.I____________(have)abakesaleifI_____________(need)moneyforeducation.9.Peter________

5、_____(send)meabeautifulsouvenirifhe________________(tour)Spain.10.IfMrGreen___________(say)Iamhard-working,myparents_________(feel)glad.11.I____________(go)tothebeachifit________________(notrain)thisweek.12.__________they__________(have)amatchiftheP.E.teacher______

6、_______(be)busy?13.He____(write)alettertohisgrandparentsifhe____(get)hisreportcardthisweek.14.Ifshe____________(get)uplate,she_____________(notcatch)theearlybus.15.Peter________(major)inEnglishifhe____(pass)theexamsinPeking University.15.如果他到的晚了会发生什么事情？What________

7、_______ifhe_____________late?16.如果努力学习，你就会取得好成绩。Ifyou___________________,you___________good_____________.17.他如果看电视太久了，他的父母会不高兴。 Ifhe_________TVtoomuch,hisparents____________________unhappy.18.如果我们为他组织生日聚会，大家都会来的。 Everyone________________ifwe_____________abirthdaypa

8、rty__________him.19.如果明天不下雨，我会和你一起去公园的。 Ifit__________ __________tomorrow,I______________gotothepark_________you.20.如果她睡过头了，就会旅游迟到的。 She;________