英语四大时态复习 课件.ppt

英语时态,在英语中，不同时间发生的动作或存在的状态要用不同的动词形式来表现。,每种时态的概念、信息词、结构、句式变化、以及某些时态间的相互区别,重点掌握,时态,Tense,时态,现在进行时：,一般现在时：,一般过去时：,现在或现阶段正在进行的动作.WearelearningEnglishclassnow.,经常或习惯性的动作或存在的状态。客观规律,真理Thesunrisesintheeast.,过去某个时间或时间段发生的动作或存在的状态。IwatchedTVlastnight.,一般将来时：,将来某一时刻的动作或状态，或将来某一段时间内经常的动作或状态.Iwillgotocollege.,be+v-ing(现在分词）,V-原形V-s/es三单,V-ed(过去式）,will+V-原形begoingto+V原形,1,M1四种基本时态1.Listen!AboyisanEnglishsong.AsingB.singingC.sangD.sings2.Allthestudents_treeslastweek.A.areplantingB.plantedC.plantD.willplant3.There_anEnglishfilmnextweek.A.isB.beC.areD.isgoingtobe4.OnSundayIusuallybasketball.AplayedB.playsC.playD.playing5.It_metwohourstofinishmyhomeworklastnight.AspentB.costC.payD.took,各时态常用的信息词,现在进行时：,一般现在时:,一般过去时:,now,Look!Listen!atthistimeWhereis?Donttalk!Its8:00am.,always,usually,often,sometimes,seldom,never,everyday,every,threetimesaday,lastnight,last,twodaysago,ago,in1999,justnow=amomentago,yesterday,一般将来时:,tomorrow，nextweek；nextinthefuture，in2050，in+一段时间,2,判断下列信息词是属于哪种时态,now,现在进行时,in1897,Listen!,lastnight,threetimesaweek,always,twoyearsago,often,yesterday,Look!,everyday,一般现在时,一般过去时,一般将来时,tomorrow,inthfuture,infiveminutes,表格对比学习,be+v-ing(现在分词）,在be后加上not,Be提到句首,V-原形V-s/es三单,在实义v.前用助动词dont,doesnt，行为动词要还原,Do,Does提到句首，实义动词还原,V-ed(过去式）,在实义v.前用助动词didnt，实义动词还原,Did提到句首，实义动词还原,will后加上not=wontbe后加上not=isnt,will+V-原形begoingto+V原形,Will或be提到句首,3,Heisateacher.,2.KangkangcomesfromChina.,3.Iusuallytakethebustowork.,4.Theyarehavingclasses.,5.Janeplayedtheguitarlastnight.,先变（一般疑问句）再变（否定句）,Isheateacher?Heisntateacher.,DoesKangkangcomefromChina?KangkangdoesntcomefromChina.,Doyouusuallytakethebustowork?Idontusuallytakethebustowork.,Aretheyhavingclasses?Theyarenthavingclasses.,DidJaneplaytheguitarlastnight?Janedidntplaytheguitarlastnight.,句型变化操练,现在分词的构成：,动词第三人称单数的构成：,过去式的构成：,直接加-ing.重读辅元辅，双写尾字母加-ing.以e结尾去e加-ing.,直接加-s.以s,x,ch,sh,o结尾加-es.以“辅音+y“结尾变y为i再加-es.,直接加-ed.以e结尾只加d.重读辅元辅，双写尾字母再加-ed.以“辅音+y”结尾变y为i再加-ed.,不规则变化，参考120页,4,have-look-begin-use-shop-get-dance-study-,现在分词,第三人称单数,过去式,study-finish-have-go-do-play-watch-give-,need-stop-hope-play-try-plan-visit-like-,havinglookingbeginningusingshoppinggettingdancingstudying,studiesfinisheshasgoesdoesplayswatchesgives,neededstoppedhopedplayedtriedplannedvisitedliked,词形转换,过去式的不规则变化,blow-buy-can-come-do-eat-fall-find-forget-get-,give-go-have-know-learn-make-meet-read-run-say-,see-send-sit-take-think-will-tell-begin-teach-catch-,blewboughtcouldcamedidatefellfoundforgotgot,gavewenthadknewlearntmademetreadransaid,sawsentsattookthoughtwouldtoldbegantaughtcaught,用所给动词的适当形式填空。,1.Listen!Mary_(sing)now.2.Ayoungman_(run)ontheplaygroundnow.3.Mymother_(watch)TVplayeveryday.4.OldBush_(visit)Chinaagainlastmonth.5.I_(play)sportsthreetimesaday.6.Look!LucyandLily_(read)books.7.There_(is)afootballmatchyesterdayafternoon.8.Ourclass_(go)tothezoothreedaysago.9.We_(finish)ourhomeworkintwohours.10.Sheisgoing_(play)ping-pongwithus.,issinging,isrunning,watches,visited,play,arereading,was,went,willfinish,toplay,Goodbye!,小小测试,判断时态形式：,Healwayslikesplayingthepiano.()WearehavinganEnglishclassesnow.()Theyoftengohomelate.()Lucyisgoingtodancetomorrow.()IlikedgotothezoowhenIwasyoung.()MrLiwillgotoanotherschoolnextyear.()Look!Theyareplayingfootball.()Shewasbornin1990.()Ilostmuchmoneylastnight.（）,A.现在进行时B.一般现在时C.一般过去时D一般将来时,A,B,C,A,B,D,C,C,D,改一般疑问句的方法：,改否定句的方法：,首先看有无be或情态动词，如果有，将be提到句首并大写，句末打问号.如果没有be或情态动词，看原句的动