三種時態(tài)一般現(xiàn)在時一般過去時現(xiàn)在進行時.ppt

七年級英語三大時態(tài),制作人：董穎,在英語中，不同時間發(fā)生的動作或存在的狀態(tài)要用不同的動詞形式來表現(xiàn)。,每種時態(tài)的概念、信息詞、結構、句式變化、以及某些時態(tài)間的相互區(qū)別,重點掌握,時態(tài),Tense,時態(tài),現(xiàn)在進行時：,一般現(xiàn)在時：,一般過去時：,現(xiàn)在正在進行的動作,經(jīng)?；蛄晳T性的動作或存在的狀態(tài)。,過去某個時間或時間段發(fā)生的動作或存在的狀態(tài)。,(ThePresentContinuousTense),(TheSimplePresentTense),(TheSimplePastTense),各時態(tài)常用的信息詞,現(xiàn)在進行時：,一般現(xiàn)在時:,一般過去時:,now,Look!Listen!atthistimeWhereis?Donttalk!Its8:00am.,always,usually,often,sometimes,seldom,never,everyday,every,threetimesaday,lastnight,last,twodaysago,ago,in1999,in+過去的年份,justnow=amomentago,yesterday,yesterdaymorning,改一般疑問句的方法：,改否定句的方法：,首先看有無be動詞，如果有，將be提到句首并大寫，句末打問號.如果沒有be動詞，看原句的動詞形式來決定借用助動詞do/does/did,并且行為動詞要還原。,V-原形V-s/esV-ed(過去式),+動詞原形?,以此類推,首先看有無be動詞，如果有，在be動詞后面加not.如果沒有be動詞，看原句的動詞形式來決定借用助動詞do/does/did,并在后面加not,并且行為動詞要還原。,主語+dont/doesnt/didnt+動詞原形,現(xiàn)在分詞的構成：,動詞第三人稱單數(shù)的構成：,過去式的構成：,直接加-ing.重讀輔元輔，雙寫尾字母加-ing.以e結尾去e加-ing.,直接加-s.以s,x,ch,sh,o結尾加-es.以“輔音+y“結尾變y為i再加-es.,直接加-ed.以e結尾只加d.重讀輔元輔，雙寫尾字母再加-ed.以“輔音+y”結尾變y為i再加-ed.,表格對比學習,be+v-ing(現(xiàn)在分詞）,在be后加上not,Be提到句首,V-原形V-三人單,在行為v.前借用do,does后加not，行為動詞還原,Do,Does提到句首，行為動詞還原,V-ed(過去式）,在行為v.前借用did后加not，行為動詞還原,Did提到句首，行為動詞還原,小小測試,判斷時態(tài)形式：,Healwayslikesplayingthepiano.()WearehavinganEnglishclassesnow.()Theyoftengohomelate.()Lucydancedthediscoatthepartylastnight.()IlikedgotothezoowhenIwasyoung.()Myteacherisfriendlytous.()Look!Theyareplayingfootball.()Shewasbornin1990.()Ilostmuchmoneylastnight.（）,A.現(xiàn)在進行時B.一般現(xiàn)在時C.一般過去時,A,B,C,A,B,B,C,C,C,have-look-begin-use-shop-get-dance-study-,現(xiàn)在分詞,第三人稱單數(shù),過去式,study-finish-have-go-do-play-watch-give-,need-stop-hope-play-try-plan-visit-like-,havinglookingbeginningusingshoppinggettingdancingstudying,studiesfinisheshasgoesdoesplayswatchesgives,neededstoppedhopedplayedtriedplannedvisitedliked,詞形轉換,Heisateacher.,2.KangkangcomesfromChina.,3.Iusuallytakethebustowork.,4.Theyarehavingclasses.,5.Janeplayedtheguitarlastnight.,先（一般疑問句）再（否定句）,Isheateacher?Heisntateacher.,DoesKangkangcomefromChina?KangkangdoesntcomefromChina.,Doyouusuallytakethebustowork?Idontusuallytakethebustowork.,Aretheyhavingclasses?Theyarenthavingclasses.,DidJaneplaytheguitarlastnight?Janedidntplaytheguitarlastnight.,句型變化操練,用所給動詞的適當形式填空。,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,判斷下列信息詞是屬于哪種時態(tài),lastnightnoweverydayLook!yesterdayoftenListen!twoyearsagoalwaysin1897threetimesaweek,一般現(xiàn)在時一般過去時現(xiàn)在進行時,過去式的不規(guī)則變化,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-ca