Unit5RevealingnatureUsingLanguage課件高二英語選擇性

Period2Usinglanguage

Unit5Revealingnature1.Tolearnthebasicusageofpastperfect;2.Todosomeexercises.LearningaimsLeading-inLookatthesentencesfromthereadingpassageandanswerthequestions.1.Insentence(a),whichactionhappenedfirst,“suspected”or“evolvedfromacommonancestor”?

“evolvedfromacommonancestor”2.Insentence(b),whichactionhappenedfirst,“refusedtobelieve”or“evolvedfromlowerformsoflife”?“evolvedfromlowerformsoflife”3.Whatdoesthestructure“haddone”indicate?Itindicatestheactionhappenedbeforeacertainpastaction.Thepastperfectexpressestheideathatsomethingoccurredbeforeanotheractioninthepast.Itcanalsoshowthatsomethinghappenedbeforeaspecifictimeinthepast.pastperfectsimplepastPastperfect1.基本結(jié)構(gòu)過去完成時(shí)表示過去的過去,其構(gòu)成形式是“had+過去分詞”。2.基本用法

(1)表示在過去某一時(shí)間或動(dòng)作之前已經(jīng)發(fā)生或完成的動(dòng)作。

它表示的時(shí)間是過去的過去,常與bylastyear,bythetimeof等連用。Hehadgonetobedby10:00lastnight.昨晚十點(diǎn)鐘之前他已經(jīng)上床睡覺了。(2)表示從過去某一時(shí)間開始一直延續(xù)到過去另一時(shí)間的動(dòng)作或狀態(tài)。常與for(后跟過去的時(shí)間段)或since(后跟過去的時(shí)間點(diǎn))等連用。ThetrainhadstartedwhenIgottothestation.當(dāng)我到達(dá)車站時(shí)火車已經(jīng)開走了。TheminuteIsawaladygettingoffthebus,Iknewitwasshe,forIhadseenherbefore.我一看到正在下公共汽車的那位女士就知道是她,因?yàn)槲乙郧耙娺^她。

3.常見結(jié)構(gòu)(1)Bytheendof+名詞(短語),主語+haddone...(2)主句(haddone),before+過去時(shí)間狀語

Ihadreachedthestationbeforesixo'clock.六點(diǎn)鐘之前我已到達(dá)車站。(3)用在told,said,knew,heard,thought等動(dòng)詞后的賓語從句,表示動(dòng)作發(fā)生在這些動(dòng)詞之前。ShesaidthatshehadneverbeentoParis.她說她從未去過巴黎。(4)Bythetime+從句(did/was/were),主語+haddone...Bythetimewearrived,everyonehadreceivedmedicalcare.我們到達(dá)時(shí),每個(gè)人都已接受了醫(yī)療護(hù)理。(5)主語+haddone...,before從句(did/was/were)Fortunately,thepeoplehadleftthevillagebeforethevolcanoerupted.幸運(yùn)的是,火山噴發(fā)前人們就已經(jīng)離開了村莊。(6)主語+haddone...,when從句(did/was/were)TheyhadalreadyputthefireoutwhenIreturnedtothevillage.當(dāng)我返回村子時(shí),他們已將大火撲滅。(7)主語+(did/was/were),after從句(haddone)Theearthquakehappenedinthedaytimeafterpeoplehadalreadylefthomeforworkorschool.地震發(fā)生在白天,當(dāng)時(shí)人們已離開家去上班或上學(xué)了。(8)用在hardly(scarcely,barely)...when...,nosooner...than...句型中HardlyhadIgothomewhentherainpoureddown.我剛到家大雨就傾盆而下。(9)用在It/This/Thatwasthefirst/...time+that從句(haddone)中Itwasthethirdtimethathehadmadethesamemistake.這是他第三次犯同樣的錯(cuò)誤了。(10)用在Itwas/hadbeen+一段時(shí)間+since從句(haddone)中Itwastenyearssincewehadhadsuchawonderfultime.我們十年都沒這么高興了。(11)hope,plan,mean,expect,intend,suppose,want,think等動(dòng)詞有時(shí)用過去完成時(shí)表示一個(gè)本來打算做而未做,或曾經(jīng)設(shè)想而未實(shí)現(xiàn)的事Theyhadwantedtohelpbutcouldnotgetthereintime.他們本想幫忙,但未及時(shí)趕到那兒。(12)用于表示與過去事實(shí)相反的if虛擬條件句中Ifshehadseenyouyesterday,shewouldhavetoldyouthetruth.如果她昨天見過你,她就會(huì)告訴你事實(shí)的真相了。(13)用在wish后的賓語從句中,表示與過去事實(shí)相反Iwishedthathehadn’tmadesuchamistake.我希望他從未犯過這樣的錯(cuò)誤。【即學(xué)即練】單句語法填空(1)Bythetimewearrived,theotherguests_________(be)there.(2)Nosooner_____(have)hebeguntospeakthantheaudienceinterruptedhim.(3)Beforewegottothetrainstation,thetrain__________(leave).hadbeenhadhadleft

SummaryExerciseⅡ.單句寫作(1)我們到的時(shí)候，其他客人都已經(jīng)在那了。(bythetime)____________________________________________________________.

(2)他剛要開始說話，觀眾就打斷了他。(nosooner...than)_______________________________________.

(3)昨天下午六點(diǎn)之前我已經(jīng)到達(dá)車站。(before)________________________________________________.

(4)這是他第一次見到住在鄉(xiāng)下的祖父母。(Itwasthefirsttimethat...)________________________________________________________.

Bythetimewearrivedthere,theotherguestshadalreadybeenthereNosoonerhadhebeguntospeakthantheaudienceinterruptedhimIhadreachedthestationbefore6p.m.yesterday

Itwasthefirsttimethathehadseenhisgrandparentsinthecount