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ID:49562518
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页数:8页
时间:2020-02-25
《条件状语从句课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Grammarif从句Revision巧计、速记语法1:正确使用that,if/whether(是否),who,why等疑问词引导的宾语从句。语法2:if(如果)引导的条件状语从句主祈从现主将从现从主有逗主从无逗位置:从句可放在主句之前或之后,但是放在主句之前须有逗号隔开eg:如果我有足够的钱,我就去环游世界If引导条件状语从句定义:if“如果,假如”它引导的句子表示某事发生所需的条件,即“在…条件下,某事才能发生”,在句子中充当状语,因此称之为条件状语从句。(If引导的条件状语从句表示假如有从句的动作发生,就会有主句动作的发生)IfIhaveenoug
2、hmoney,Iwilltravelaroundtheworld=IwilltravelaroundtheworldifIhaveenoughmoneyif引导的条件状语从句时态主将从现祈使句情态动词IwillsingasongifIamhappy.主句从句Don’tcrosstheroadifthelightisredYoumuststopifthetrafficlightisred.用法:1.如果主句是祈使句,从句要用一般现在时。Don’tgoandplayfootballifyoudon’tfinishyourhomework.Pleasecall
3、meifhecomesnextSunday.if(如果)引导的条件状语从句:2.如果主句是一般将来时,if从句则用一般现在时。Ifitrains(从句),Iwillstayathome.I’llgowithyouifyoudon’twanttogoalone(从句).3.如果主句含有must,may,can等情态动词,if从句也要用一般现在时。Ifyoudrivetoofast,youmayhaveanaccident.Youmuststopifthetrafficisred.1.Ifyou____(want)tolistentomusic,_____(
4、choose)aCD.2.Ifyou___(buy)anewcamera,____(get)agoodone.3.Ifthelight___________(notcome)on,____(wait)foroneminute.4.Ifit___________(notwork),_____(wait)aminuteandthen_____(try)again.5.Ifyou________(notknow)howtousethecamera,____(read)theinstructions.wantchoosebuygetdoesn’tcomewait
5、doesn’tworkwaittrydon’tknowreadCompletethesentences.主祈从现1.I’msureifhe_____(go)totheparty,he________(have)agreattime.2.Iftherain_______(stop)tonight,wewillgotothecinema.3.I’llbuyacomputerifI______(have)enoughmoney.4.You_________(notget)nervousifyou_____(do)enoughexercise.5.Iwantto
6、knowifhe_________(come)tomorrow,ifhe_______(come),I__________(give)themassagetohim.goeswillhavestopshavewon’tgetdocomeswillcomewillgive主将从现
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