七年級(jí)英語(yǔ)下冊(cè) 三大時(shí)態(tài)專題課件 人教新目標(biāo)版

七年級(jí)英語(yǔ)：三大時(shí)態(tài)專題課件七年級(jí)英語(yǔ)三大時(shí)態(tài)制作人：陳建新在英語(yǔ)中，不同時(shí)間發(fā)生的動(dòng)作或存在的狀態(tài)要用不同的動(dòng)詞形式來(lái)表現(xiàn)。每種時(shí)態(tài)的概念、信息詞、結(jié)構(gòu)、句式變化、以及某些時(shí)態(tài)間的相互區(qū)別重點(diǎn)掌握時(shí)態(tài)Tense時(shí)態(tài)現(xiàn)在進(jìn)行時(shí)：一般現(xiàn)在時(shí)：一般過(guò)去時(shí)：現(xiàn)在正在進(jìn)行的動(dòng)作

經(jīng)?；蛄?xí)慣性的動(dòng)作或存在的狀態(tài)。過(guò)去某個(gè)時(shí)間或時(shí)間段發(fā)生的動(dòng)作或存在的狀態(tài)。(ThePresentContinuousTense)(TheSimplePresentTense)(TheSimplePastTense)各時(shí)態(tài)常用的信息詞現(xiàn)在進(jìn)行時(shí)：一般現(xiàn)在時(shí):一般過(guò)去時(shí):

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(guò)去的年份,justnow=amomentago,yesterday,yesterdaymorning改一般疑問(wèn)句的方法：改否定句的方法：①首先看有無(wú)be動(dòng)詞，如果有，將be提到句首并大寫(xiě)，句末打問(wèn)號(hào).②如果沒(méi)有be動(dòng)詞，看原句的動(dòng)詞形式來(lái)決定借用助動(dòng)詞do/does/did,并且行為動(dòng)詞要還原。V-原形V-s/esV-ed(過(guò)去式)+動(dòng)詞原形…?以此類推①首先看有無(wú)be動(dòng)詞，如果有，在be動(dòng)詞后面加not.②如果沒(méi)有be動(dòng)詞，看原句的動(dòng)詞形式來(lái)決定借用助動(dòng)詞do/does/did,并在后面加not,并且行為動(dòng)詞要還原。主語(yǔ)+don’t/doesn’t/didn’t+動(dòng)詞原形Do…Does…Did…現(xiàn)在分詞的構(gòu)成：動(dòng)詞第三人稱單數(shù)的構(gòu)成：過(guò)去式的構(gòu)成：①直接加-ing.②重讀輔元輔，雙寫(xiě)尾字母加-ing.③以e結(jié)尾去e加-ing.①直接加-s.②以s,x,ch,sh,o結(jié)尾加-es.③以“輔音+y“結(jié)尾變y為i再加-es.①直接加-ed.②以e結(jié)尾只加d.③重讀輔元輔，雙寫(xiě)尾字母再加-ed.④以“輔音+y”結(jié)尾變y為i再加-ed.

對(duì)比時(shí)態(tài)動(dòng)詞形式否定句一般問(wèn)句現(xiàn)在進(jìn)行時(shí)

一般現(xiàn)在時(shí)一般過(guò)去時(shí)表格對(duì)比學(xué)習(xí)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(dòng)詞還原Do,Does提到句首，行為動(dòng)詞還原V-ed(過(guò)去式）在行為v.前借用did后加not，行為動(dòng)詞還原Did提到句首，行為動(dòng)詞還原小小測(cè)試判斷時(shí)態(tài)形式：Healwayslikesplayingthepiano.()WearehavinganEnglishclassesnow.()Theyoftengohomelate.()Lucydancedthediscoatthepartylastnight.()IlikedgotothezoowhenIwasyoung.()Myteacherisfriendlytous.()Look!Theyareplayingfootball.()Shewasbornin1990.()Ilostmuchmoneylastnight.（）A.現(xiàn)在進(jìn)行時(shí)B.一般現(xiàn)在時(shí)C.一般過(guò)去時(shí)ABCABBCCC

have-look-begin-use-shop-get-dance-study-現(xiàn)在分詞第三人稱單數(shù)過(guò)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(zhuǎn)換Heisateacher.你會(huì)了嗎？2.KangkangcomesfromChina.3.Iusuallytakethebustowork.4.Theyarehavingclasses.5.Janeplayedtheguitarlastnight.先（一般疑問(wèn)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(dòng)詞的適當(dāng)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(shí)態(tài)

lastnightnoweverydayLook!yesterdayoftenListen!twoyearsagoalwaysin1897threetimesaweek

一般現(xiàn)在時(shí)一般過(guò)去時(shí)現(xiàn)在進(jìn)行時(shí)過(guò)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