英语四大时态复习-课件

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.A．singB.singingC.sangD.sings2.Allthestudents______treeslastweek.A.areplantingB.plantedC.plantD.willplant3.There______anEnglishfilmnextweek.A.isB.beC.areD.isgoingtobe4.OnSundayIusuallybasketball.A．playedB.playsC.playD.playing5.It______metwohourstofinishmyhomeworklastnight.A．spentB.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…?Don’ttalk!It’s8:00am.always,usually,often,sometimes,seldom,never,everyday,every…,threetimesadaylastnight,last…,twodaysago,…ago,in1999,justnow=amomentago,yesterday一般将来时:tomorrow，nextweek；next…inthefuture，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in1897Listen!lastnightthreetimesaweekalwaystwoyearsagooftenyesterdayLook!everyday一般现在时一般过去时一般将来时tomorrowinthfutureinfiveminutes对比时态肯定句否定句一般疑问句现在进行时一般现在时一般过去时一般将来时表格对比学习be+v-ing(现在分词）在be后加上notBe提到句首V-原形V-s/es三单在实义v.前用助动词don’t,doesn’t，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didn’t，实义动词还原Did提到句首，实义动词还原will后加上not=won’tbe后加上not=isn’twill+V-原形begoingto+V原形Will或be提到句首31.Heisateacher.2.KangkangcomesfromChina.3.Iusuallytakethebustowork.4.Theyarehavingclasses.5.Janeplayedtheguitarlastnight.先变（一般疑问句）再变（否定句）Isheateacher?Heisn’tateacher.DoesKangkangcomefromChina?Kangkangdoesn’tcomefromChina.Doyouusuallytakethebustowork?Idon’tusuallytakethebustowork.Aretheyhavingclasses?Theyaren’thavingclasses.DidJaneplaytheguitarlastnight?Janedidn’tplaytheguitarlastnight.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：①直接加-ing.②重读辅元辅，双写尾字母加-ing.③以e结尾去e加-ing.①直接加-s.②以s,x,ch,sh,o结尾加-es.③以“辅音+y“结尾变y为i再加-es.①直接加-ed.②以e结尾只加d.③重读辅元辅，双写尾字母再加-ed.④以“辅音+y”结尾变y为i再加-ed.不规则变化，参考120页4have-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-havinglookingbeginningusingshoppinggettingdancingstudyingstudiesfinisheshasgoesdoesplayswatchesgivesneededstoppedhopedplayedtriedplannedvisitedliked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-blewboughtcouldcamedidatefellfoundforgotgotgavewenthadknewlearntmademetreadransaidsawsentsattookthoughtwouldtoldbegantaughtcaught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.issingingisrunningwatchesvisitedplayarereadingwaswentwillfinishtoplay判断时态形式：1.Healwayslikesplayingthepiano.()2.WearehavinganEnglishclassesnow.()3.Theyoftengohomelate.()4.Lucyisgoingtodancetomorrow.()5.IlikedgotothezoowhenIwasyoung.()6.MrLiwillgotoanotherschoolnextyear.()7.Look!Theyareplayingfootball.()8.Shewasbornin1990.()9.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ABCABDCCD改一般疑问句的方法：改否定句的方法：①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.②如果没有be或情态动词，看原句的动词形式来决定借用助动词do/does/did,并且实义动词要还原。V-原形V-s/esV-ed(过去式)+动词原形…?以此类推①首先看有无be动词，如果有，在be动词后面加not.②如果没有be动词，看原句的动词形式来决定借用助动词do/does/did,并在后面加not,并且行为动词要还原。主语+don’t/doesn’t/didn’t+动词原形Do…Does…Did…