Unit5語(yǔ)法專項(xiàng)課件過去進(jìn)行時(shí)

Unit5語(yǔ)法專項(xiàng)課件（過去進(jìn)行時(shí)）初中英語(yǔ)人教版八年級(jí)下冊(cè)過去進(jìn)行時(shí)定義過去進(jìn)行時(shí)表示過去某一時(shí)刻或某一段時(shí)間內(nèi)正在進(jìn)行或發(fā)生的動(dòng)作。過去進(jìn)行時(shí)的結(jié)構(gòu)否定形式問句形式was/were+not+doingWas/Were+主語(yǔ)+doingwas/were+doingHewassleepingatthattime.Hewasn’tsleepingatthattime.Washesleepingatthattime?肯定形式過去進(jìn)行時(shí)標(biāo)志詞then,atthattime,thistimeyesterday,at5o’clocklastnight,allnight,allthemorning,from7:00to9:00yesterday…Theywerehavingaclassthistimeyesterday.Iwasdrawingahorsewhentheteachercamein.動(dòng)名詞變化規(guī)則口訣規(guī)則例子直1.一般情況下，直接在動(dòng)詞后加-ing。play–playing去2.動(dòng)詞以不發(fā)音的-e結(jié)尾，要去-e加-ing。take–taking雙3.重讀閉音節(jié)的動(dòng)詞，要雙寫詞尾字母，再加-ing。cut–cutting變4.以-ie結(jié)尾的動(dòng)詞，把ie變成y再加-ing。lie-lying易錯(cuò)點(diǎn)1when的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句1.狀語(yǔ)從句表示短時(shí)間的動(dòng)作，主句常用進(jìn)行時(shí)態(tài)或完成時(shí)態(tài)。WhenIcamein,hewasreadingthenewspaper.非延續(xù)性動(dòng)詞：come,go,leave,arrive,meet,die等。易錯(cuò)點(diǎn)1when的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句2.狀語(yǔ)從句表示長(zhǎng)時(shí)間的動(dòng)作或狀態(tài)，主句常用進(jìn)行時(shí)態(tài)。Whenshewasmakingacall,Iwaswritingaletter.易錯(cuò)點(diǎn)1when的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句3.表示突然發(fā)生某事，意思是“正在……時(shí)突然”，主句常用過去進(jìn)行時(shí)，when從句常用一般過去時(shí)。IwasjustcomingalongtoseeyouwhenIran

intoWilson.易錯(cuò)點(diǎn)1while的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句1.主句和從句都用一般過去時(shí)。Shelistenedcarefullywhileheread.延續(xù)性動(dòng)詞：read,study,sleep,write,listen,watch等。易錯(cuò)點(diǎn)1while的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句2.從句用過去進(jìn)行時(shí)，主句用一般過去時(shí)。WhileIwaswatchingTV,Tomcamein.易錯(cuò)點(diǎn)1while的用法when和while引導(dǎo)時(shí)間狀語(yǔ)從句3.主句和從句都用過去進(jìn)行時(shí)。WhileIwaswatchingTV,shewasdoingsomecleaning.易錯(cuò)點(diǎn)2用法不同過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別過去進(jìn)行時(shí)一般過去時(shí)1.表示動(dòng)作在持續(xù)或未完成。1.表示某一動(dòng)作已經(jīng)完成。2.表示動(dòng)作反復(fù)地進(jìn)行。2.表示只做一次動(dòng)作。易錯(cuò)點(diǎn)2用法不同過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別Shewaswritingalettertoherfriendateightlastnight.Shewrotealettertoherfriendlastnight.(信不一定寫完)(信寫完了)Shewavedtome.Shewaswavingtome.（揮了揮手）（反復(fù)揮手）易錯(cuò)點(diǎn)2標(biāo)志詞不同過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別過去進(jìn)行時(shí)一般過去時(shí)過去時(shí)間點(diǎn)：atthattime,thistimeyesterday,at7o’clockyesterdayevening等。過去時(shí)間點(diǎn)：justnow,yesterday,thismorning,threeyearsago等。過去時(shí)間段：fromsixtonineyesterday,frommorningtillnight,allthosedays等。過去時(shí)間段：inthepast,in+過去的年份,lastweek,onceuponatime等。易錯(cuò)點(diǎn)2過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別Wewerehavingsupperatthistimeyesterday.Itwasrainingallthosedays.IwasreadingEnglishwhilemymotherwascookingbreakfast.（過去進(jìn)行時(shí)）易錯(cuò)點(diǎn)2過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別IlivedinBeijingthreeyearsago.ThefirstOlympicGameshappenedin1896.Annyusedtobeshort,butshebecomestallernow.（一般過去時(shí)）【典例1】LittleTom______computergameswhenhismother gothome. A.isplayingB.playsC.wasplayingD.playing考查時(shí)態(tài)。句意：當(dāng)媽媽到家的時(shí)候，小湯姆正在玩電腦游戲。when引導(dǎo)時(shí)間狀語(yǔ)從句，主句多用進(jìn)行時(shí)，時(shí)間發(fā)生在過去，故用過去進(jìn)行時(shí)。【典例2】Turnoffthewaterwhileyou______your teethorwashingyourhands.A.werebrushingB.brushC.arebrushingD.brushed考查時(shí)態(tài)。句意：當(dāng)你刷牙或洗手的時(shí)候，請(qǐng)關(guān)掉水龍頭。while引導(dǎo)時(shí)間狀語(yǔ)從句，時(shí)態(tài)保持一致，brushing與washing并列；習(xí)慣的動(dòng)作，故選現(xiàn)在進(jìn)行時(shí)?！镜淅?】—Icalledyouat8:00yesterdayevening,butnoone answered. —Sorry,I______clothesatthattime. A.wash