【语法】M4U8-when引导的时间状语从句-

when引导的时间状语从句Lead-inWhenIwaseight,Igotabookaboutstars.Lead-inWhentheteachercamein,thestudentsbecamequiet.Lead-inWhenwearewatchingTV,mumiscooking.Lead-inWhenthetelephonerang,mybrotherwasreadingabook.Lead-inWhenIgottotheairport，theplanehadleft．Presentation1．从句动作在主句动作之前发生。Whenhehadfinishedhishomework，hetookashortrest．（finished先发生）I.when时间状语从句的谓语动词所表示的动作可以在主句谓语动作之前、之后或同时发生Presentation2．从句动作在主句动作之后发生。WhenIgottotheairport，theguestshadleft．（gotto后发生）Presentation3．从句动作和主句动作同时发生Whenweweredancing，astrangercamein．Whenshewasmakingaphonecall，Iwaswritingaletter．Presentation①YoushallborrowthebookwhenIhavefinishedreadingit．②Whenthemanagercomeshereforavisitnextweek,I'lltalkwithhimaboutthis．II.在将来时从句中，常用when，且从句须用一般时态替将来时PresentationIII.when时间状语从句可以位于主句前，也可以位于主句后我们可以说：Whenwearrived,theskywentdark．也可以说：Theskywentdarkwhenwearrived.PresentationIV.when引导时间状语从句时,表示当……的时候,从句的谓语动词可以是延续性的,也可以是非延续性的.它引导的时间状语从句通常用一般现在时表示一般将来时Iwillgotoseeyouwhenyoufinishthetrainingcourse.PresentationV.when作并列连词用时,表示在那时；这时突然,相当于andthen或atthattime.Hewasabouttotellmethesecretwhensomeonepattedhimontheshoulder.Practice1.WhenJohn________(arrive),I___________(cook)dinner.2.Whenshe________(come)intomyroom,I__________(read)abook.用所给动词正确时态填空完成句子.课堂练习arrivedwascookingcamewasreadingPractice3.Whenwe____________(watch)TV,thetelephone__________(ring).4.Whenwe___________(dance),astranger__________(come)in.werewatchingrangweredancingcamePractice直击中考1.【2014威海中考】--Alan!Whyareyousolate?--Sorry!WhenI_____home,Imetoneofmyoldfriends.A.wentB.amwalkingC.hasgoneD.waswalkingPractice【解析】考查when时间状语从句时态。句意“当我正往家走的时候，我遇见我的一个老朋友”。只有waswaling适合此意，故选。DPractice2.【2015广东中考】--Sir,Jennywantstoknowwhenshecanleavetheoffice.--Onlywhenshe____copyingthisreport.A.finishesB.finishC.finishedD.willfinishPractice【解析】考查when时间状语从句的时态。句意：--先生，珍妮想知道她能什么时间离开办公室。--只有当她抄完这份报告的时候才能离开。when引导时间状语从句时，如果主从句动作都没有发生，主句动作用将来时，从句用一般现在时。即“主将从现”，故选。APractice3.（2015广东梅州）Iwasveryexciting____IheardthenewsthatthehighspeedrailwouldbebuiltfromGuangzhoutoXiamen.A.afterB.whenC.untilD.whilePractice【解析】此题考查引导时间状语从句的从属连词辨析，选项词意A.after“在...之后B.when“当...时”C.until“直到......”D.while“当...时”,根据语境且从句谓语动词为heard属结束性动词，所以不能选while，答案选．BPractice10.（2015天津中考）______thedinnerwasallover,everyonehelpedwashthedishes.A.HowB.WhenC.BeforeD.WhyPractice【解析】此题考查引导时间状语从句的从属连词when用法句意“晚饭结束的时候，大家都帮忙洗碗”,选项里面只有when意思适合，故选．BHomeworkAShealwaysbringsapresentHesitsonthefloorHestayedinbedShetakesabasketBahewasillbshegoesshoppingcshevisitsherfriendsdshewatchesTVMatchtheclausesincolumnAwiththoseincolumnBtomakecompletesentenceswithwhen.Thenrewriteeachsentencewiththeadverbialclauseatthebeginning.HomeworkKey1.Shealwaysbringsapresentwhenshevisitsherfriends.Whenshevisitsherfriends,shealwaysbringsapresent.HomeworkKey2.HesitsonthefloorwhenshewatchesTV.WhenshewatchesTV,hesitsonthefloor.3.Hestayedinbedwhenhewasill.Whenhewasill,hestayedinbed.4.Shetakesabasketwhenshegoesshopping.Whenshegoesshopping,shetakesabasket.