《Natural disasters》GrammarPPT课件

Unit8GrammarBNaturaldisastersWhatwereyoudoingwhentheteachercameintotheclassroomjustnow?dohomeworkcleanthedesktalkwithmydeskmateprepareforthenextlessonlookforthebookreadEnglishbookshavebreakfastwhenIwasdoinghomeworkIwascleaningthedeskIwastalkingwithmydeskmateIwaspreparingforthenextlessonIwaslookingforthebookIwashavingbreakfastWhentheteachercamein.WhatwasAdoingwhileBwasdoingsth?…wasrunningwhile…waswalking.…wasplayingbasketballwhile…wasplayingfootball.…wasreadingbookswhile…wasplayingcomputergames.…wassingingwhile…wasdoinghishomeworkwhen,while的区别Iwasreadingwhenyoucamein.Iwasreadingwhenyouweresleeping.When引导的时间状语从句，谓语是延续性的，或者短暂性的。通常用一般过去时，也可以用进行时。whenwhile的区别MymotherwaswatchingTVwhileIwasdoingmyhomework.Hewastakingashowerwhilehiswifewastalkingonthephone.while引导的时间状语从句，谓语动词只能是延续性的，通常用进行时。Theteachercamein____studentsweretalkingnoisily.=Thestudentsweretalkingnoisily___theteachercamein.whenwhilewhen后通常加短暂性动词，如：arrive,comein,getup,open,close,finish,begin,come,go,arrive,reach,getto,leave,move,borrow,buy,die,knock等While后通常加延续性动词,如：live,run,stay,clean,play,hold,watch,teach,read,study,teach,eat,drink,write,dance,sing,smoke等巩固练习Mywalletdroppedontheground______Iwasrunning.2.______Iwasfallingasleep,therewasaloudknockonthedoor.3.______hewasreading,anearthquakestarted.4.Werethestudentslisteningtotheteachercarefully______theteacherwasgivingalesson?5.________thetelephonerang,Ibecamenervous.whileWhenWhilewhileWhen1.I_________myhomeworkwhenMike_____lastnight.昨天晚上迈克来的时候我正在写作业。2.WhileAnn____________TV,herfather___home.安正在看电视时，她父亲回来了。3.WhatwereyoudoingwhenI________atthedoor?我敲门的时候你在干什么？wasdoingcamewaswatchinggotknocked4.She______________theroomwhenI____toseeher.我去看她的时候她不是在打扫房间。5.I_____________myvocationEnglandthistimelastsummer.去年夏天的这个时候我正在英国度假。wasn’tcleaningwentwasspending6.Mary___________whilePeter___________thepiano.Mary在跳舞，而Peter在弹钢琴。7.They_____________thenewspaperwhenI________theroom.我走进屋子时他们正在看报纸。8.What_____you_______atfiveyesterdayafternoon?昨天下午5点你在做什么？wasdancingwasplayingwerereadingwentintoweredoing9.Thestudents______________fortheirlessonswhenMrBlackenteredtheclassroom.Black先生走进教室的时候学生们正在准备功课。10.Theteacher__________tosomeparentswhenIsawher.我见到老师的时候她正在和家长谈话。werepreparingwastalking