_三大时态专题.ppt

单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,七年级英语三大时态,韦小如,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。,(The Present Continuous Tense),(The Simple Present Tense),(The Simple Past 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!at this time,Where is?Dont talk!Its 8:00am.,always,usually,often,sometimes,seldom,never,every day,every,three times a day,last night,last,two days ago,ago,in 1999,in+,过去,的年份,just now=a moment ago,yesterday,yesterday morning,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,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.,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,小小测试,判断时态形式,：,He always likes playing the piano.(),We are having an English classes now.(),They often go home late.(),Lucy danced the disco at the party last night.(),I liked go to the zoo when I was young.(),My teacher is friendly to us.(),Look!They are playing football.(),She was born in 1990.(),I lost much money last night.（）,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-,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,He is a teacher.,你会了吗？,2.,Kangkang,comes from China.,3.I usually take the bus to work.,4.They are having classes.,5.Jane played the guitar last night.,先（一般疑问句）,再（否定句）,Is,he a teacher?,He,isnt,a teacher,.,Does,Kangkang,come,from China?,Kangkang,doesnt come,from China.,Do,you usually,take,the bus to work?,I,dont,usually,take,the bus to work.,Are,they having classes?,They,arent,having classes.,Did,Jane,play,the guitar last night?,Jane,didnt play,the guitar last night.,句型变化操练,用所给,动词的适当形式填空。,1.Listen!Mary _ (sing)now.,2.A young man _(run)on the playground now.,3.My mother _(watch)TV play every day.,4.Old Bush _(visit)China again last month.,5.I _(play)sports three times a day.,6.Look!Lucy and Lily _(read)books.,7.There _(is)a football match yesterday afternoon.,8.Our class _(go)to the zoo three days ago.,is singing,is running,watches,visited,play,are reading,was,went,判断下列信息词是属于哪种时态,last night,now,every day,Look!,yesterday,often,Listen!,two years ago,always,in 1897,three times a week,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-,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,再见,