搜索
Module4Newtechnology：带有if的条件状语从句。Ifyouwanttoturnontherecorder,pressthebluebutton.Ifyoulikegreatmusic,pleasewelcomeSallyMaxwell!Iftheredlightdoesn’tcomeon,waitforthirtyseconds.Examplesinthismoduleif从句+祈使句If引导的条件状语从句(1)1.If从句的构成如果想去的话，请告诉我。Ifyouwanttogo,pleasetellme.如果绿灯没有亮，就等一下。Ifthegreenlightisn’ton,waitaminute.如果你想回放的话，按绿色按纽。Ifyouwanttoplayback,pressthegreenbutton.如果要录音的话，按红色按纽。Ifyouwanttorecord,presstheredbutton.如果你有空的话，我们去散步吧。Ifyouarefree,let’sgooutforawalk.从以上例句中可以看出，If所引导的从句是一个完整的句子，一定要有主语。2.If从句的位置If从句表示如果，可以放在主句之前，if从句+,主句；也可以放在主句之后，如：如果喜欢这张照片就把它打印出来。Printthephotoifyoulikeit.如果照相机出故障就到我们网站上查看。Lookatourwebsiteifthecameradoesnotwork.IfIplaywell,I’llplaythesolo.IftheteacherchoosesKylie,she’llplaythedancemusic.Ifshebecomesastar,herparentswon’tsendheraway.Examplesinthismodule由if引导的从句叫条件状语从句，if意为“如果”。若主句是一般将来时，从句要用一般现在时。If引导的条件状语从句(2)“主将从现”时态－－“主将从现”1.主句一般将来shall/will/must/should(肯定/否定）+v.原形时，从句一般现在时1.如果你努力工作，你的梦想将会实现。Ifyouworkhard,yourdreamwillcometrue.2.如果明天下雨，我不会出去散步。Ifitrainstomorrow,Iwon’tgooutforawalk.2.if从句用一般现在时，表示未来的一种条件，从句+时间状语。Ifyoucan’tcometomorrow,wecanholdthepartyalittlelater.明天你如果不能来，我们可以迟一点举行宴会。Ifitdoesn’traintomorrow,we’llgototheGreatWall.明天如果不下雨，我们就去长城。Lookandsay用if从句描述图片。Ifthetelephone,Iit.Ifyoulate,youlateforschool.ring,answergetup,lateringswillanswergetupwillbeIfyoufeelhungry,youshouldeatsomething.Ifyoufeeltired,youmusthavearest.hungry,eattired,havearestIfyouareill,youmustgotoseeadoctor.Ifyourideabikeinthestreet,youmustbeverycareful.ill,seeadoctorrideabike,becareful1.I’llcallyouifhe________.A.comeB.comesC.comingD.tocomeI.选择填空。QUIZ2.Ifsomeonecomeshere,_______yourselfbehindthetree.A.hidB.hiddenC.hideD.hiding3.Becareful!Ifyou________,anaccidentmayhappentoyou.A.won’tB.don’tC.aren’tD.can’tCompletethesentenceswiththecorrectformofthewords1.Ifyou______(receive)atextmessage,_______(answer)it.2.Ifyou____(do)someworkonyourcomputer,_____(save)it.receiveanswerdosave3.Ifaphoto_____(be,not)good,_________(notshow)ittoyourfriends.4.Ifyou_____(want)moreinformation,______(look)onawebsite.5.Ifyou_________(can’tdo)somethingthefirsttime,_____(try)again.isnotdon’tshowwantlookcan’tdotry1.Ifthey_______(befree)free,Iwillgoshoppingwiththem.2.Whatwillyoudoifyou____(find)apandaindanger?用括号内所给动词或词组的正确形式填空。注意if引导的条件状语从句的用法。3.Ifhedoesn’tstudyhard,he____________(notcatchup)withhisclassmates.4.Ifit___________(notrain)tomorrow,wewillgotherebybike.5.IfMike__________(drop)outofschool,wewon’tgoandhelphimanymore.arefreefindwon’tcatchupdoesn’traindropsoutof1.Ifit_______(rain)tomorrow,Iwon’tbehappy.2.Ifitis_______(sun)nextSunday,Iwillgotraveling.3.Ifshe____________(understand),shewillputupherhand.rainssunnyunderstandsII.用单词的正确形式填空。4.Ifhe_______(work)hard,hewillpasstheexam.5._____,youmustwaitforthegreenlight.Ifyouwantto(across)astreetcrossworksCompletethesentenceswiththecorrectformofthewords.1Ifyou______(want)tolistentomusic,______(choose)aCD.2Ifyou____(buy)anewcamera,____(get)agoodone.3Ifthelight____________(notcome)on,____(wait)foroneminute.wantchoosebuygetdoesn’tcomewait4Ifyou____(want)tokeepthepicture,_____(save)itonyourcomputer.5Ifit___________(notwork),_____(wait)aminuteandthen_____(try)again.6Ifyou_____(need)tosendanemail,____(use)mycomputer.doesn’tworkwaittryneedusewantsave7Ifyou__________(notknow)howtousethecamera,_____(read)theinstructions.8Ifyou_________(notlike)theprogramme,_____(turn)theTVoff.don’tknowreaddon’tliketurn