UNIT4TOPIC3SECTIONC課文講解課件仁愛(ài)版英語(yǔ)九年級(jí)上冊(cè)

SectionC課文講解Unit4AmazingScienceTopic3Chinaisthethirdnationthatsentapersonintospace.Whatarethecomputersusedfor?educationbusinessindustrycommunication……..TheImportanceofComputersleisuren.閑暇，業(yè)余時(shí)間；休閑活動(dòng)leisureadj.空閑的，有閑的；業(yè)余的e.g.In

leisure

time,

my

parents

played

with

me

and

Coco.

SincecomputerswereinventedintheUSAinthe1950s,theyhavebecomeveryimportantinmanyareasofworkandleisure.譯文：從20世紀(jì)50年代，美國(guó)發(fā)明了電腦以后，它就在人們的工作和休閑領(lǐng)域有很重要的作用。Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.譯文：毫無(wú)疑問(wèn)，電腦在技術(shù)和商業(yè)領(lǐng)域都非常有用。Thereisnodoubtthat…無(wú)疑，毫無(wú)疑問(wèn)……e.g.Thereisnodoubtthatwewillbesuccessful.

Thereisnodoubtthatwedidtherightthing.Inspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.譯文：在太空中，電腦可以用來(lái)控制宇宙飛船的速度和方向。Withthehelpofcomputers,doctorscanfinddiseaseseasilyandsolveotherproblems.譯文：在電腦的幫助下，醫(yī)生能夠輕而易舉地發(fā)現(xiàn)疾病并解決其他問(wèn)題。withthehelpof…在……幫助下e.g.With

the

help

of

myclassmates,

my

spokenEnglish

got

improved

inthe

end.

Forexample,tinycomputerswhichareinsidepatients’bodiescankeeptheirheartsbeatingnormally.譯文：例如，病人體內(nèi)的微型電腦能夠讓他們的心臟正常跳動(dòng)。verysmallinsizeadj.極小的，微小的64英寸超大型（Huge）32英寸大型（Large）16英寸中型（Medium）8英寸小型（Small）4英寸超小型（Tiny）Infactories,robotsarecontrolledbycomputersthatarelikehumanbrains.Theycandoworkthatisdangeroustohumans.譯文：在工廠中，可以用類(lèi)似人腦的電腦來(lái)控制機(jī)器人。它們可以做很危險(xiǎn)的工作。Inbusiness,computersareusedtoplaceandcancelorders.Theyarealsomakingtheworkplacesaferandbetter.譯文：在商業(yè)領(lǐng)域，電腦是用來(lái)設(shè)置或取消命令的。它們還能讓工作場(chǎng)所更安全更好。SincetheInternetcameintobeing,people'slivesathomehavechanged,too.Moreandmorepeoplehavepersonalcomputersthatareusedtoplaygamesandwatchmovies.譯文：電腦出現(xiàn)以后，人類(lèi)的生活也發(fā)生了改變。越來(lái)越多的人有私人電腦用來(lái)玩游戲或看電影。comeintobeing形成moreandmore越來(lái)越多ThankstotheInternet,peoplecandoshoppinganddobusinessathome.譯文：有了網(wǎng)絡(luò)，人們可以在家里購(gòu)物或辦公。thanksto多虧，由于doshopping購(gòu)物dobusiness經(jīng)商Insteadofwritinglettersonpaper,peoplecommunicatebysendinge-mailsandchattingonline.譯文：人們交流時(shí)不再用紙寫(xiě)信，而是發(fā)送郵件或在網(wǎng)上聊天。insteadof

代替Thewholeworldisconnected.TheInternetismakingtheworldsmaller,likeavillage.譯文：整個(gè)世界都聯(lián)系在一起。網(wǎng)絡(luò)讓地球變得更小，像個(gè)村子一樣。connectv.連接

1.connect

Awith

B使A與B連接2.connect

sth.(to

sth.)使電、氣、水等接通3.connectsb./sth.(withsb./sth.)與……有聯(lián)系，把……聯(lián)系起來(lái)connectionn.關(guān)系，聯(lián)系Computershaveimprovedourlives,buttheyhavebroughtproblems,too.Forinstance,ifweworkoncomputerstoolong,wemaygetheadachesorsoreeyes.Ifweplaycomputergamestoomuch,wewon'thaveenoughtimetostudyorexercise.Besides,noteverythingwereadontheInternetistrueorgoodforus.Computershelpusatworkandathome,buttheymustbeusedproperly.forinstance=forexample例如用來(lái)舉例說(shuō)明某一論點(diǎn)或情況，一般只舉同類(lèi)人或物中的“一個(gè)”為例。e.g.Manycountries,Japan,forinstance(forexample),hasalotofearthquakes.suchas用來(lái)列舉事物時(shí)，一般列舉同類(lèi)人或事物中的幾個(gè)例子。e.g.Ilikefruits,suchasapples,pearsandbananas.

Computershaveimprovedourlives,buttheyhavebroughtproblems,too.Forinstance,ifweworkoncomputerstoolong,wemaygetheadachesorsoreeyes.Ifweplaycomputergamestoomuch,wewon'thaveenoughtimetostudyorexercise.Besides,noteverythingwereadontheInternetistrueorgoodforus.Computershelpusatworkandathome,buttheymustbeusedproperly.除……之外（還有）except除……之外（不再有）e.g.WeallpassedtheexamexceptTom.

我們都通過(guò)了考試，湯姆除外。（整體中……湯姆一人不及格）except前幾乎總有all、any、every、no及其復(fù)合詞等詞。e.g.Heansweredallthequestionsexceptthelastone.

除了最后一個(gè)問(wèn)題沒(méi)答外，其余問(wèn)題他都答了。知識(shí)拓展except后接名詞、代詞、動(dòng)名詞和動(dòng)詞原形，這時(shí)except=but；但except后跟副詞、介詞短語(yǔ)時(shí)，不能用but代替。e.g.Thewindowisneveropenexceptinsummer.這扇窗戶從來(lái)不開(kāi)，除夏季外。Hedidnothingexcept/butcleanthehouse.他只是打掃了房子。知識(shí)拓展computersusageproblemworkdailylife1.____________________________ofaspaceship.2.helpdoctors_____________________________.3._______________________________infactories.4.helpbusinessmen_____________________.1.playgamesand__________________________.2._______________and_____________athome.3.___________________bysendinge-mailsand_______________________________.1.getheadachesor_____________________.2.don’thaveenoughtime__________________.3.somethingonInternetisnot