15上外研初二課件-優(yōu)秀備選m8-unit3language in

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通過(guò)上一模塊的學(xué)習(xí)，我們知道過(guò)去進(jìn)行時(shí)可以表示過(guò)去某一時(shí)刻或時(shí)段正在進(jìn)行或持續(xù)的動(dòng)作，句子常和at

...yesterdaymorning,atthattime,at

...lastnight等時(shí)間狀語(yǔ)連用。其實(shí)，過(guò)去進(jìn)行時(shí)還可以和when,while,as引導(dǎo)的過(guò)去時(shí)間狀語(yǔ)從句連用，形成復(fù)合句。過(guò)去進(jìn)行時(shí)（2）(1)

Whilethelightswerechangingtored,acarsuddenlyappearedroundthecorner.

正當(dāng)交通信號(hào)燈要變成紅燈的時(shí)候，一輛小轎車(chē)突然從拐角處駛出來(lái)。(2)

Oneday,whenHenrywasworkinginarestaurant,asnakesuddenlyappeared.

一天，當(dāng)亨利正在餐館里工作時(shí)，一條蛇突然鉆了出來(lái)。(3)

Iwastryingtopickitupwhenitbitmeagain.

我正試圖撿起它（那條蛇），突然它(蛇）又咬了我一口。(4)

Asthedoctorswerecheckinghim,thepaingotworse.

醫(yī)生給他做檢查時(shí)，疼痛加劇了。

下面，讓我們來(lái)分析when和while從句與過(guò)去進(jìn)行時(shí)連用的幾種情況。

1.when所引導(dǎo)的時(shí)間狀語(yǔ)既可以指時(shí)間點(diǎn)，也可指時(shí)間段；while所引導(dǎo)的時(shí)間狀語(yǔ)只指時(shí)間段。因此，在when引導(dǎo)的時(shí)間狀語(yǔ)從句中，動(dòng)詞可以是終止性動(dòng)詞，也可以是延續(xù)性動(dòng)詞；而在while從句中，動(dòng)詞必須是延續(xù)性動(dòng)詞。例如：

Theyarrivedwhilewewerehavingdinner.

我們吃飯的時(shí)候他們到了。這句話(huà)還可以寫(xiě)成：

Theyarrivedwhenwewerehavingdinner.2.由when引導(dǎo)的時(shí)間狀語(yǔ)從句，如果主句用過(guò)去進(jìn)行時(shí)、從句用一般過(guò)去時(shí)，則表示一個(gè)動(dòng)作正在進(jìn)行的時(shí)候另一個(gè)動(dòng)作（突然）發(fā)生了，強(qiáng)調(diào)后一動(dòng)作發(fā)生的突然性。請(qǐng)看例句：

Weweretalkingwhentheteachercamein.

我們正在講話(huà)，老師（突然）進(jìn)來(lái)了。

該句也可以用while表達(dá)，但與用when表達(dá)有細(xì)微的區(qū)別，請(qǐng)注意體會(huì)：

Whileweweretalking,theteachercamein.

我們正在講話(huà)的時(shí)候，老師進(jìn)來(lái)了。（只表明老師進(jìn)來(lái)的事實(shí)，不強(qiáng)調(diào)突然性）3.當(dāng)主句和從句的動(dòng)作都是延續(xù)的或同時(shí)發(fā)生的，兩句都用過(guò)去進(jìn)行時(shí)的時(shí)候，多用while引導(dǎo)。例如：

Theyweresingingwhileweweredancing.

他們?cè)诔?，我們?cè)谔琛?.Hewaslisteningtomusic_____hewasridinghisbike.2.Iwaswaitingatthelights_____Isawtheboyfalloffhisbike.3.Iwaswalkinginthestreet_____anaccidenthappened.4.Thedriverwastalkingonhismobilephone______hewasdriving.Completethesentenceswithwhenorwhile.whilewhenwhenwhileLookatwhatTonydidlastSaturday.CompletetheYoucolumn.TimeTonyYou8:30am-11:30amplayingintheparkvisitingmygrandparents12:30pm-1:20pmhavinglunchwithhisfriends2:00pm-4:00pmplayingfootball5:00pm-6:30pmdoinghomeworkCompletetheconversationwiththecorrectformofthewordsinthebox.

appearbiteshowthrowDoctor:Whendidthesnake(1)____you?Henry:Earlierthismorning.Itsuddenly(2)_________infrontofmeandbitmyhand.biteappearedDoctor:Canyou(3)_____meaphotoofit?Henry:Yes.Hereitis.Doctor:Oh,thesnakewasonatable.Henry:Yes.I(4)______itonthetableafteritbitme.showthrewCompletethepassagewiththecorrectformoftheexpressionsinthebox.

falloffjustintimepayattentionsidebysideWhenthegirlwasridingherbike(1)___________withafriend,shehadanaccident.Theyweretalkingandtheywerenot(2)_______________.Acarcameroundthecornerbutstopped(3)___________.Thecardidnothither,butshe(4)________herbike.sidebysidepayingattentionjustintimefelloff1.WhenJim’smothercameinhe_____hishomework.(2013長(zhǎng)沙) A.isdoing B.hasdone C.wasdoing注:word文檔點(diǎn)擊此處鏈接Quiz2.Sallytookaphotoofherfriendswhilethey_______computergames.(2013杭州)A.play B.areplaying C.haveplayed D.wereplaying3.Thetwinsdidn’tgotothetheatre,they_____thelightmusicallnight.(2013河北)A.haveenjoyedB.willenjoyC.areenjoying