时间状语从句课件(.pptVIP

**英语学习辅导报*英语学习辅导报*英语学习辅导报*精选完整ppt课件*精选完整ppt课件*Examplesinourtextbook1.Whenhewasorbitinginthecapsule,hetookphotographsofplanetearth.2.Whenyanglanded,PremierWenJiabaotelephonedtheControlCentretoofferhiscongratulations.3.WhenYangtookofffromJiuquaninnorthwestChinaat9amyesterday,Chinabecamethe….4.Whilehewastravellinginspace,Yangspoketotwoastronautsaboardthe….5.Whileshewaswaitingataxioutside,shemetSamParrish.精选完整ppt课件*一、when/while的区别1.when表示主从句两个动作同时发生或先后发生。而while表示主从句两个动作同时发生或强调主句的动作在从句动作进行期间发生。(1)______theyarewaitingfortheNewYear,theylistentomusic,singsongsanddance.(2)______theboysawhismother,hestoppedcrying.WhileWhen精选完整ppt课件*2.when+短暂性动词或延续性动词while+延续性动词(一般为bedoing。)(1)Hewasdoinghishomework______Isawhim.(2)Pleasedon’ttalksoloud______othersareworking.3.进行时+while+进行时Shewasdancing_______Iwassinging4.从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用___________shewassinging,wealllostourselvesinherbeautifulvoice.注意:延续性动词表达的动作能够延续，如:keep保存，维持；walk走路；read阅读等；非延续性动词也称瞬间动词，所表达的动作不能够延续。如:hear听到；return归还；see看见。whenWhen/While/Aswhilewhile精选完整ppt课件*3.用while,when填空:①_____________Iwaswalkingdownthestreet,Inoticedapolicecarinfrontofthestore.②____________Johnarrived,Iwascookinglunch.③Iwaswandering（徘徊）throughthestreet_________Icaughtsightofatailor’sshop.When/While/AsWhenwhen精选完整ppt课件*_______________waswalkingdownthestreet，Isawsomepolicemen._______theyheardthenews，theyweresurprised.______thechildwasplayingwithhistoys，hisparentswerewatchingTV.Theyshoutedslogans___theypassedthesquare.when表示从句动作和主句动作同时发生,或先于主句动作；while表示从句的动作与主句动作同时发生,并有延续的含义；as从句动作与主句动作同时发生,常译为“一边…一边…”。从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用.When/While/AsWhenWhileas二、when／while／as的用法。精选完整ppt课件*总结:相当于andatthis