八年級(jí)下Unit5Section-A課件3-(Grammma-4c)

Unit5

Whatwereyoudoingwhentherainstormcame?SectionA3昨天夜里八點(diǎn)鐘你正在做什么?我在沖澡。暴風(fēng)雨來(lái)臨的時(shí)候她正在做什么？她在做家庭作業(yè)。當(dāng)暴風(fēng)雨來(lái)臨的時(shí)候他在做什么？當(dāng)暴風(fēng)雨來(lái)臨的時(shí)候他正在圖書館里看書。當(dāng)開(kāi)始下大雨時(shí)候本在做什么?當(dāng)開(kāi)始下大雨的時(shí)候本正在在幫助他的媽媽做晚餐。當(dāng)琳達(dá)在睡覺(jué)的時(shí)候珍妮在做什么？當(dāng)琳達(dá)正在睡覺(jué)的時(shí)候珍妮正在幫助瑪麗做作業(yè)。GrammarFocusGrammarFocus過(guò)去進(jìn)行時(shí)（一）.基本概念

過(guò)去進(jìn)行時(shí)表示在______或_____內(nèi)____進(jìn)行的動(dòng)作。這一特定的過(guò)去時(shí)間除有上下文暗示以外,一般用時(shí)間狀語(yǔ)來(lái)表示。※Iwasplayingbasketballatteno’clockyesterday.※

IwashavinganEnglishclassfromseventonineo’clockyesterday.（二）.結(jié)構(gòu)Pastcontinuoustense____________*1.昨天的這個(gè)時(shí)候我正在做 作業(yè)。Iwasdoingmyhomeworkatthattime yesterday.2.昨晚我一直在看電視。IwatchedTVlastnight.過(guò)去進(jìn)行時(shí)常表示過(guò)去某一時(shí)刻或過(guò)去某一階段內(nèi)正在進(jìn)行的動(dòng)作。過(guò)去某一時(shí)刻過(guò)去某一階段內(nèi)（五）:過(guò)去進(jìn)行時(shí)的用法：IwaswatchingTVlastnight.強(qiáng)調(diào)過(guò)程強(qiáng)調(diào)過(guò)去的事實(shí)*1、一般過(guò)去時(shí)往往表示某一動(dòng)作已經(jīng)完成，(在過(guò)去某個(gè)時(shí)間發(fā)生過(guò)的動(dòng)作或存在的狀態(tài))而過(guò)去進(jìn)行時(shí)卻表示動(dòng)作在持續(xù)或未完成。(在過(guò)去某一時(shí)刻或某一段時(shí)間正在進(jìn)行的動(dòng)作。)Shewrotealettertoherfriendlastnight.她昨晚給朋友寫了封信。(信寫完了)Shewaswritingalettertoherfriendlastnight.她昨晚一直在給朋友寫信。(信不一定寫完)2、一般過(guò)去時(shí)表示只做一次動(dòng)作，而過(guò)去進(jìn)行時(shí)卻表示動(dòng)作反復(fù)地進(jìn)行。

Shewavedtome.她朝我揮了揮手。Shewaswavingtome.她一直朝我揮手。一般過(guò)去時(shí)與過(guò)去進(jìn)行時(shí)的區(qū)別*（四）與過(guò)去進(jìn)行時(shí)連用的時(shí)間狀語(yǔ)有:1.atthis（that）time+過(guò)去時(shí)間2.atteno’clock+過(guò)去時(shí)間3.from6to9+過(guò)去時(shí)間4.thosedays5.atthetimeof…6.Atthesametime+過(guò)去時(shí)間7.由when引導(dǎo)的一般過(guò)去時(shí)的句子yesterdaylastnighttherainstormlastyear*1、while和when都是表示同時(shí)，到底句子中是用when還是while主要看從句和主句中所使用的動(dòng)詞是短暫性動(dòng)作（瞬時(shí)動(dòng)詞）還是持續(xù)性動(dòng)作。

(1)若主句表示的是一個(gè)短暫性的動(dòng)作，而從句表示的是一個(gè)持續(xù)性動(dòng)作時(shí)，兩者都可用。

eg:Hefellasleepwhen[while]hewasreading.他看書時(shí)睡著了。

(2)若主、從句表示兩個(gè)同時(shí)進(jìn)行的持續(xù)性動(dòng)作，且強(qiáng)調(diào)主句表示的動(dòng)作延續(xù)到從句所指的整個(gè)時(shí)間，通常要用while。eg:Ikeptsilent

hewaswriting.在他寫的時(shí)候，我默不作聲。

(3)若從句是一個(gè)短暫性動(dòng)作，而主句是一個(gè)持續(xù)性動(dòng)作，可以when但不用while。

eg:

hecamein,Iwaslisteningtotheradio.他進(jìn)來(lái)時(shí)，我在聽(tīng)收音機(jī)。

(4)若主、從句表示的是兩個(gè)同時(shí)(或幾乎同時(shí))發(fā)生的短暫性動(dòng)作，一般要用when。

Ithoughtofitjust

youopenedyourmouth.就在你要說(shuō)的時(shí)候，我也想到了。

至于什么是短暫性動(dòng)作，什么是持續(xù)性動(dòng)作，其實(shí)有個(gè)很簡(jiǎn)單的規(guī)律。就是如果是進(jìn)行時(shí)態(tài)，一般是持續(xù)性的。如果是過(guò)去式，一般是短暫性動(dòng)作。對(duì)于，填寫when還是while的問(wèn)題，通常首先看主句和從句中的時(shí)態(tài)，再根據(jù)以上4個(gè)規(guī)律來(lái)判斷填寫那個(gè)單詞。延續(xù)性動(dòng)詞和非延續(xù)性動(dòng)詞延續(xù)性動(dòng)詞表示一種可以持續(xù)的行為過(guò)程或狀態(tài)。常見(jiàn)的有：drink喝eat吃fly飛know知道learn學(xué)習(xí)last持續(xù)lie躺live住play玩rain下雨read讀run跑sing唱sleep睡覺(jué)smoke抽煙snow下雪stand站talk說(shuō)wait等walk走wear穿work工作write寫sit坐非延續(xù)性動(dòng)詞（短暫性動(dòng)詞）表示行為或過(guò)程是短暫瞬間完成的。常見(jiàn)的有：admit承認(rèn)arrive到達(dá)begin開(kāi)始borrow借die死fall倒go去hit擊中join加入buy買break打破close關(guān)閉come來(lái)jump跳leave離開(kāi)lose丟marry結(jié)婚open打開(kāi)put放start開(kāi)始stop停When–While用法歸納1)一種狀態(tài)/地點(diǎn)+when+whathappened(短暫/延續(xù)性動(dòng)詞)2)Whatwashappening+when+whathappened=When+whathappened+whatwashappeningIwassurprisedwhenmyfathershouted.WhenhewasatMinghuMiddleSchool,healwaysplayeddefense.(后衛(wèi))Iwaswaitingforyouwhenitbegantorainheavily.同義句WhileIwaswaitingforyou,itbegantorainheavily.=Whilewhatwashappening,+whathappened(延續(xù)性動(dòng)詞)

when引導(dǎo)的從句，謂語(yǔ)動(dòng)詞可延可短；而

while引導(dǎo)的從句，只能是延續(xù)性動(dòng)詞。when與while主從句的幾種時(shí)態(tài)搭配關(guān)系。主句時(shí)態(tài)連詞從句時(shí)態(tài)was/weredoingwhendiddidwhenwas/weredoingdidwhilewas/weredoingwas/weredoingwhilewas/weredoing

總結(jié)

1)when可指時(shí)間點(diǎn),又可指時(shí)間段,從句中可用延續(xù)性動(dòng)詞,也可用非延續(xù)性動(dòng)詞。

2)while總是指一個(gè)時(shí)間段,從句中必須用延續(xù)性動(dòng)詞。*Choosethecorrectverbforms.I(wassleeping/slept)whenthephonerang.AlanwasdoinghouseworkwhenI(wasarriving/arrived.)athome.WhileJack(wastakingashower/tookashower),thepolicecametohishouse.IwaswatchingTVwhenmymother(wasturning/turned)itoff.選擇正確動(dòng)詞形式，考慮動(dòng)詞是否延續(xù)性ExercisesFillwith“while”or“when”1._______Maywastalkingonthephone,hersisterwenthome.2._______Jimboughthisnewdog,itwaswearingalittlecoat.3._______IsawAlice,shewaswashingclothes.4._______Iwasdancing,hewassinging.5.________thegirlcalledthepolice,thetwomenwerefighting.6.Iwascleaningmyroom________thefire(火災(zāi))happened.WhenWhileWhileWhenWhenwhen1.Weweretalking________theteachercameintotheclassroom.2.Iwassinging_________hewasdancing.3.________Iwascuttinghair,theearthquakehappened.4.Theboyswereflyingakite_____Tomfellintotheriver.5.Mymotherwaswashing_______myfatherwascooking.6.Whatwereyoudoing______thesingingcompetitionbegan?whenwhenwhenwhileWhilewhileFillwith“while”or“when”Lookatthetableandwritesentenceswithboth

whileandwhen.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash4aWhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.turnon打開(kāi)（反）turnoff關(guān)掉

時(shí)間狀語(yǔ)從句主句

主句

時(shí)間狀語(yǔ)從句買份飲料離開(kāi)家打開(kāi)收音機(jī)把車送到洗車處*2.WhileJohn

wasplaying

thepiano,Mary

left

thehouse.

John

wasplaying

thepianowhenMary

leftthehouse.3.WhileJohnwascleaninghisroom,Maryturnedontheradio.JohnwascleaninghisroomwhenMary

turnedontheradio.4.WhileJohnwasshopping,Marytookthecartothecarwash.Johnwasshopping

whenMarytookthecartothecarwash.*Fillintheblankswithwas,were,whenorwhile.At7:00a.m.,Iwokeup.______I____makingmybreakfast,mybrother______listeningtotheradio.________Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook._____wegottotheplaceoftheaccident,thecar_____inbadshapefromhittingatree.Butluckilythedriver____fine.Theroads______icybecauseoftheheavysnowfromthenightbefore.WhilewaswasWhileWhenwaswaswere當(dāng)我們到達(dá)事故現(xiàn)場(chǎng)的時(shí)候,汽車由于撞在了樹(shù)上，已經(jīng)變了形。

4b收音機(jī)新聞

聽(tīng)收音機(jī)

車禍

在我家附近

立刻出去

看一看

汽車因?yàn)樽驳綐?shù)上而嚴(yán)重變形了。

由于前晚的大雪，路面是結(jié)滿冰的。

*

WhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.YouYourpartner9:00a.m.11:30a.m.4:00p.m.9:00p.m.4cA:Whatwereyoudoingatnineo’clocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:You’rekidding!readEnglishhavebreakfastdomyhomeworkwatchTVplaybasketballpracticedancingtakeashowerlistentomusic*I.根據(jù)漢語(yǔ)意思完成下列英語(yǔ)句子，每空一詞。1.昨天下午五點(diǎn)鐘你哥哥在做什么？What________yourbrother________atfiveyesterdayafternoon?2.昨天我回到家時(shí)，我媽媽在洗衣服。Mymother_____________clothes________I________homeyesterday.

3.你做作業(yè)時(shí)，你妹妹在干什么？What________yoursister________________you________________yourhomework?waswashingwas