,七年级英语三大时态,七年级英语三大时态,1,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,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,2,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。,(ThePresentProgressiveTense),(TheSimplePresentTense),(TheSimplePastTense),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,3,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!atthistime,Whereis?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,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,4,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/es,V-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,Do,Does,Did,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,5,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.,现在分词动词第三人称过去式直接加-ing.直接加-s.,6,对比,时态,动词形式,否定句,一般问句,现在进行时,一般现在时,一般过去时,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,对比动词形式否定句一般问句现在进行时一般过去时表格对比学习b,7,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,小小测试判断时态形式:Healwayslikesplayin,8,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-,hav,ing,look,ing,begin,ning,us,ing,shop,ping,get,ting,danc,ing,study,ing,stud,ies,finish,es,has,go,es,do,es,play,s,watch,es,give,s,need,ed,stop,ped,hope,d,play,ed,tr,ied,plan,ned,visit,ed,like,d,词形转换,have-现在分词第三人称单数过去式study-need-h,9,Heisateacher.,你会了吗?,2.KangkangcomesfromChina.,3.Iusuallytakethebustowork.,4.Theyarehavingclasses.,5.Janeplayedtheguitarlastnight.,先(一般疑问句),再(否定句),Is,heateacher?,He,isnt,ateacher,.,Does,Kangkang,come,fromChina?,Kangkang,doesntcome,fromChina.,Do,youusually,take,thebustowork?,I,dont,usually,take,thebustowork.,Are,theyhavingclasses?,They,arent,havingclasses.,Did,Jane,play,theguitarlastnight?,Jane,didntplay,theguitarlastnight.,句型变化操练,Heisateacher.你会了吗?2.Kangkangco,10,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,1.Listen!Mary_(sing)no,11,判断下列信息词是属于哪种时态,lastnight,now,everyday,Look!,yesterday,often,Listen!,twoyearsago,always,in1897,threetimesaweek,一般现在时,一般过去时,现在进行时,判断下列信息词是属于哪种时态lastnight一般现在时,12,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-,bl,e,w,bought,could,c,a,me,did,ate,f,e,ll,found,forg,o,t,g,o,t,g,a,ve,went,had,kn,e,w,learn,t,ma,d,e,met,read,r,a,n,said,saw,sen,t,s,a,t,took,thought,would,told,beg,a,n,taught,caught,过去式的不规则变化blow-give-see-blewgav,13,再见,再见,14,