九年級(jí)英語上冊(cè)-Unit4《Topic-2-When-was-it-developed》Section-D-課件-仁愛版

Unit4AmazingScienceWelcome

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unitTopic2Whenwasitinvented?SectionDNewwordslandmark地標(biāo)，里程碑global全球的，世界的thief

小偷runaway逃跑，失控Teachingaimsanddemands1.Learnnewphrasesandusefulexpressions:aslongas,runaway,inshortInshort,thisrobotisveryusefultous.2.Sumupthesimplepastpassivevoice.3.Talkaboutnewtechnologiesandinventions.Lookanddiscuss.What’sthis?Whatcanweuseittodo?1.WhatisGPS?Isitusefultous?It’slikeman-made“stars”.Yes,itis.2.Whatwouldyoudoifyouloseyourwayinaforest?IwilluseGPS.1bAskandanswer3.Howdidtheearlyexplorersknowwheretheywere?Usingthestars,theycouldknowwheretheywereandinwhichdirectiontheyweregoing.GPSislikeman-made“stars”.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing.Butthismethodworkedwellatnightaslongastheweatherwasgood.Pairwork1.Whatwouldyoudoifyoulostyourwayinaforest?2.Howdidtheearlyexplorersknowwheretheywere?3.WhatisGPS?Isitusefultous?4.WhatdoyouthinkGPSwillbeusedforinthefuture?Pointsbemadeof/frombedeveloped/inventedin/bybeusedfordoingsomethingcometrueItissaidthat…DNAisthesameineverypartofyourbody.besimilartoNooneknowsforcertain.Theywillnolongerwanttobeourservants,butourmasters.aslongasInshort,thisrobotisveryusefultous.Explanation1.Doyouwanttolearnhowtosendandreceiveane-mail?你想學(xué)習(xí)怎樣發(fā)送和接收電子郵件嗎？“疑問詞＋不定式”這一結(jié)構(gòu)中要注意how與what的區(qū)別，how是疑問副詞用作狀語，what是疑問代詞作賓語。如：（1）Weneedtothinkoverhowtocontrolthepollution.

我們需要認(rèn)真思考怎樣控制污染。（2）Thereisalotofgoodsinthemarket.Ireallycan’tdecidewhattobuy.集市上有許多商品，我真決定不下來買什么?！脖容^〕Canyoutellmewhattodo?你能告訴我該做什么嗎？Canyoutellmehowtodoit?你能告訴我怎樣做這件事嗎？2.Ifyouwantto,pleasefollowthesedirections.如果你想，請(qǐng)按下面的指示去做。follow在此意為“遵循，聽從，接受”。如：Whydidn’tyoufollowmyadvice?你為什么不聽我的忠告？Weshouldfollowthetrafficrulesandwemustn’tbreakthem.我們應(yīng)該遵守交通規(guī)則，不要違反?！餐卣埂常?）follow還可意為“跟隨，伴隨”。followsb.todosth.跟著某人去做某事。入：ThatstrangerfollowedDr.Litogoupstairs.那個(gè)陌生人跟著李博士上了樓。（2）following下列的，接著的如：Whichofthefollowingsentencesistrue?下列句子中哪一個(gè)正確？3.First,turnonyourcomputerandconnecttotheInternet.首先，打開電腦連接因特網(wǎng)。turnon“打開”與turnoff“關(guān)上”對(duì)應(yīng)；turnup“調(diào)大”與turndown“調(diào)小”對(duì)應(yīng)。如：

It’sdarkintheroom.Turnonthelight,please.房間里暗，請(qǐng)打開燈。－Yourradioisnoisy,whynotturnitdown?

你的收音機(jī)太吵啦！為什么不調(diào)小一點(diǎn)？－Sorry,I’lldoit.對(duì)不起，我這就調(diào)小。4.Youre-mailwillbesenttoyourfriend.你的電子郵件將被發(fā)送給你朋友。此句是一般將來時(shí)的被動(dòng)語態(tài)，其結(jié)構(gòu)為“助動(dòng)詞will＋be＋及物動(dòng)詞的過去分詞”。如：

The30thOlympicGameswillbehostedinLondon,England.

第三十屆奧運(yùn)會(huì)將在英國(guó)倫敦舉行。

Millionsoftreeswillbeplantedhere.這兒將栽種數(shù)以百萬棵樹。5.Afteryoufinishreadingit,clickon“Close”.在你讀完之后，點(diǎn)擊“關(guān)閉”。finishdoingsth.做完某事如：

Mr.Liangdidn’tfinishcheckingexercisebooksuntil10o’clocklastnight.梁老師直到昨晚10點(diǎn)才檢查完作業(yè)本

師生互動(dòng)S：老師，課文中出現(xiàn)了較多用作賓語補(bǔ)足語的成分，我沒有區(qū)別出來，請(qǐng)?jiān)俳o我講一下。T：賓語補(bǔ)足語顧名思義就是對(duì)賓語進(jìn)行補(bǔ)充說明的成分。下面列舉幾個(gè)含有賓語補(bǔ)足語的句子：

1.ThestudentsselectXiaoYumonitor.(名詞)2.Weshouldkeepourroomtidyandclean.(形容詞)3.Mr.Analwaysencouragesustostudyharder.(不定式)4.WeregardedYangLiweiasanationalhero.(介詞短語)5.Theyfeltthetrainmoving.(現(xiàn)在分詞)6.I’llgetmywatchrepaired.(過去分詞)

可以看出賓語補(bǔ)足語主要有名詞，形容詞，不定式，現(xiàn)在分詞，過去分詞，過去分詞和介詞短語充當(dāng)。

S：賓語補(bǔ)足語用來說明賓語的特征、狀態(tài)或結(jié)果、身份等，是嗎？

T：對(duì)，你的理