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1、七年级英语三大时态,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),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 Whe
2、reis?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,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
3、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,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
4、”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.() Lucydancedthediscoatthepartylastnigh
5、t.() 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,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-,ne
6、ed- stop- hope- play- try- plan- visit- like-,having looking beginning using shopping getting dancing studying,studies finishes has goes does plays watches gives,needed stopped hoped played tried planned visited liked,词形转换,Heisateacher.,2.KangkangcomesfromChina.,3.Iusuallytakethebustowork.,4.Theyare
7、havingclasses.,5.Janeplayedtheguitarlastnight.,先（一般疑问句） 再（否定句）,Isheateacher? Heisntateacher.,DoesKangkangcomefromChina? KangkangdoesntcomefromChina.,Doyouusuallytakethebustowork? Idontusuallytakethebustowork.,Aretheyhavingclasses? Theyarenthavingclasses.,DidJaneplaytheguitarlastnight? Janedidntplayt
8、heguitarlastnight.,句型变化操练,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)t
9、othezoothreedaysago.,issinging,isrunning,watches,visited,play,arereading,was,went,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,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-,blew bought could came did ate fell found forgot got,gave went had knew learnt made met read ran said,saw sent sat took thought would told began taught caught,再见,初中英语课件金戈铁骑整理制作,
