七年級英語下冊 三大時態(tài)專題課件 人教新目標版

七年級英語：三大時態(tài)專題課件七年級英語三大時態(tài)制作人：陳建新在英語中，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…?Don’ttalk!It’s8:00am.

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：①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.②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①首先看有無be動詞，如果有，在be動詞后面加not.②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+don’t/doesn’t/didn’t+動詞原形Do…Does…Did…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：①直接加-ing.②重讀輔元輔，雙寫尾字母加-ing.③以e結尾去e加-ing.①直接加-s.②以s,x,ch,sh,o結尾加-es.③以“輔音+y“結尾變y為i再加-es.①直接加-ed.②以e結尾只加d.③重讀輔元輔，雙寫尾字母再加-ed.④以“輔音+y”結尾變y為i再加-ed.

對比時態(tài)動詞形式否定句一般問句現(xiàn)在進行時

一般現(xiàn)在時一般過去時表格對比學習be+v-ing(現(xiàn)在分詞）在be后加上notBe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ABCABBCCC

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-

havinglookingbeginningusingshoppinggetting

dancing

studying

studiesfinishes

hasgoes

does

playswatchesgives

neededstoppedhopedplayed

triedplannedvisited

liked詞形轉換Heisateacher.你會了嗎？2.KangkangcomesfromChina.3.Iusuallytakethebustowork.4.Theyarehavingclasses.5.Janeplayedtheguitarlastnight.先（一般疑問句）再（否定句）Isheateacher?Heisn’tateacher.DoesKangkangcomefromChina?Kangkangdoesn’tcomefromChina.Doyouusuallytakethebustowork?Idon’tusuallytakethebustowork.Aretheyhavingclasses?Theyaren’thavingclasses.DidJaneplaytheguitarlastnight?Janedidn’tplaytheguitarlastnight.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-catch-

blewboughtcouldcamedidatefell