初一英语下学期三种时态的综合

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,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,in+过去的年份,justnow=amomentago,yesterday,yesterdaymorning,时态,现在进行时：,一般现在时：,一般过去时：,现在正在进行的动作,经常或习惯性的动作或存在的状态。,过去某个时间或时间段发生的动作或存在的状态。,(ThePresentContinuousTense),(TheSimplePresentTense),(TheSimplePastTense),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.,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-三人单,在行为v.前借用do,does后加not，行为动词还原,Do,Does提到句首，行为动词还原,V-ed(过去式）,在行为v.前借用did后加not，行为动词还原,Did提到句首，行为动词还原,小小测试,判断时态形式：,Healwayslikesplayingthepiano.()WearehavinganEnglishclassesnow.()Theyoftengohomelate.()Lucydancedthediscoatthepartylastnight.()IlikedgotothezoowhenIwasyoung.()Myteacherisfriendlytous.()Look!Theyareplayingfootball.()Shewasbornin1990.()Ilostmuchmoneylastnight.（）,A.现在进行时B.一般现在时C.一般过去时,A,B,C,A,B,B,C,C,C,改一般疑问句的方法：,改否定句的方法：,首先看有无be动词，如果有，将be提到句首并大写，句末打问号.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,并且行为动词要还原。,V-原形V-s/esV-ed(过去式),+动词原形?,以此类推,首先看有无be动词，如果有，在be动词后面加not.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+dont/doesnt/didnt+动词原形,Heisateacher.,2.KangkangcomesfromChina.,3.Iusuallytakethebustowork.,4.Theyarehavingclasses.,5.Janeplayedtheguitarlastnight.,先（一般疑问句）再（否定句）,Isheateacher?Heisntateacher.,DoesKangkangcomefromChina?KangkangdoesntcomefromChina.,Doyouusuallytakethebustowork?Idontusuallytakethebustowork.,Aretheyhavingclasses?Theyarenthavingclasses.,DidJaneplaytheguitarlastnight?Janedidntplaytheguitarlastnight.,句型变化操练,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,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.,issinging,isrunning,watches,visited,play,arereading,was,went,判断下列信息词是属于哪种时态,lastnightnoweverydayLook!yesterdayoftenListen!twoyearsagoalwaysin1897threetimesaweek,一般现在时一般过去时现在进行时,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-cat