Unit+4++Topic+3+Section+C 仁爱科普版九年级英语上册

Unit4AmazingScienceTopic3SectionC1.Somewords:doubt,tiny,inside,brain,cancel,connect2.Somephrases:nodoubt,forinstance3.Somesentences:(1)Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness(2)Computershelpusatworkandathome,buttheymustbeusedproperly.LearningGoalsNewwordsandexpressionsentertainmentn.娱乐；招待doubt n.&v.怀疑，疑惑nodoubt

无疑地tiny adj.极小的，微小的insideprep.在……内；在……里

adv.

在里面normally adv.通常，正常情况下brain n.脑；智力；脑力cancel v.取消，撤销；废止workplace n.工作场所connect v.连接；把……联系起来forinstance

例如besides adv.而且，再说 prep.除……之外(还)properly adv.正确地，恰当地ComputerswereinventedintheUSAinthe1950s,nowtheyhavebecomeveryimportantinmanyareasofworkandleisure.education businessindustry communicationdailylife medicalcareentertainment sports√√√√√√√√1a1.Tickthefieldsweusethecomputerin.Whatcanthecomputersusefor?2.Canyougiveanexampleoftheuseofthecomputerinoneofthefieldsabove?Forexample,tinycomputerswhichareinsidepatients'bodiescankeeptheirheartsbeatingnormally.Doctorscanfinddiseaseseasily

withthehelpofcomputers.ReadParagraph1,andfillinthechart.PlaceTheusageofcomputersInspaceInhospitalsInfactoriesInbusiness

controlthespeedanddirectionfinddiseaseseasilyandsolveotherproblemsdodangerousworkusedtoplaceandcancelordersReadParagraph2,andanswerthequestions.1.Havepeople’slivesathomebeenchangedsincetheInternetcameintobeing?2.Whatdopeopleusetheirpersonalcomputersfor?

3.TheInternetismakingtheworldsmaller,isn’tit?

Yes,theyhave.Peoplecanusetheircomputerstoplaygames,watchmovies,doshopping,dobusiness,sende-mailsandchat.Yes,itis.1.Whatisthepassageabout?TheImportanceofComputersWhile-readingGuessingTip:在通读全文的基础上概括。Matchthetopicsentence

ofeachparagraph!

Para.1

B.SincecomputerswereinventedintheUSAinthe1950s,theyhavebecomeveryimportantinmanyareasofworkandleisure.C.SincetheInternetcameintobeing,people’slivesathomehavebeenchanged,too.Para.2Skimming略读Para.3A.Computershaveimprovedourlives,buttheyhavebroughtproblems,too.

Thetopicsentenceisusuallyinthebeginningorattheendofaparagraph.Carefulreading

SincecomputerswereinventedintheUSAinthe1950s,theyhavebecomeveryimportantinmanyareasofworkandleisure.Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.since+一般过去时态的句子/过去的时间点/一段时间+ago，用于现在完成时态之中，且这个现在完成时态的句子中的谓语动词要用延续性动词。eg.Hehaslivedheresince1999.HehasbeenawayfromChongqingsince10yearsago.1.Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.毫无疑问电脑在技术和贸易业都非常有用。

考点：

there’snodoubt+that从句

“毫无疑问”eg.There’snodoubtthathe’sanhonestman.

(1)doubt(n.)(2)doubt(vt.)+从句(3)doubt(vi.)+about/of

Thereisnodoubtthatwewillbesuccessful.Doubt

isthekeytoknowledge.doubt/daʊt/

n./v.怀疑，疑惑Idon'tdoubtthattheywillbeabletosolvetheproblems.

Idoubtwhether/ifhe'llchangehismind.eg.Thereisnoreasontodoubtofhishonesty.CarefulreadingInspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.Withthehelpofcomputers,doctorscanfinddiseaseseasilyandsolveotherproblems.Forexample,tinycomputers

whichareinsidepatients’bodiescan

keeptheirhearts

beating

normally.tiny

verysmallinsize

adj.极小的，微小的2.

Inspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.

在太空，电脑已经被使用来控制宇宙飞船的速度及方向。

考点：

现在完成时态结构：主语+have/has+done+其他；现在完成时的被动语态：主语+have/hasbeen+done+其他。eg.Wehaveplantedmanytreesonthemountain.=Manytreeshavebeenplantedonthemountainbyus.及时练习：（将下列句子改为被动语态）1.Scinetistshavelaunchedspaceshipstoexploretheouterspace.Spaceships________________toexploretheouterspace.2.Wehaveplantedmanytreessofar.Manytrees________________byussofar.havebeenlaunchedhavebeenplanted3.

Forexample,tinycomputerswhichareinsidepatients’bodiescan

keeptheirheartsbeatingnormally.

举个例子，病人体内所安放的微型电脑能让他们的心脏正常跳动。

考点：

（1）此句是由which引导的定语从句，来修饰computers，类似的句子还有：Infactories,robotsarecontrolledbycomputersthatarelikehumanbrains./Theycandoworkthatisdangeroustohumans.

（2）keepdoingsth.

“一直做某事”

keepsb.doingsth.

“让某人一直做某事”

eg.Don’tkeephimwatingsolong.

（3）keep+adj./keepsb./sth.+adj.

eg.keephappy/quiet;keepyourhandsclean1.Iamsorrytokeepyou_____solong.

A.waitingB.towaitC.towaitingD.wait2.Thenewshopkeeps_____for24hoursaday.

A.openingB.toopeningC.openD.toopen3.He_____theroombyhisbossforalongtime.

A.iskeptcleaningB.keepcleaningC.iskepttocleanD.keptclean4.Wemustalwayskeepourclassroom_____.

A.cleaningB.tocleanC.cleanD.cleansA及时练习：CACCarefulreadingInfactories,robotsarecontrolledbycomputersthatarelikehumanbrains.Theycandoworkthatisdangeroustohumans.Inbusiness,computersareusedtoplaceandcancelorders.Theyarealsomakingtheworkplacesaferandbetter.定语从句下订单和取消订单4.Inbusiness,computersareusedtoplaceandcancelorders.在商业上，电脑被用来下订单和取消订单

place:熟义:n.地点，场所；

生义

：v.放置，安顿；下单；

n.地位；（速度比赛或竞赛获胜者的）名次

1：Mr.Smithplacedajadestone(玉石)intheyoungman'shandandtoldhimtoholdit(2012河南完型；外延)_____

2：Toeveryone'ssurprise,thepoorlydressedZhangtookthefirstplaceintheexam.(2018抚顺完型)_____

3.Thankstomyparents,Iwasfirstplacedinaspecialschool.(2017衢州词汇运用)_____

放置名次安顿CarefulreadingSincetheInternetcameintobeing,people’slivesathomehavebeenchanged,too.Moreandmorepeoplehavepersonalcomputersthatareusedtoplaygamesandwatchmovies.ThankstotheInternet,peoplecandoshoppinganddobusinessathome.Insteadofwritinglettersonpaper,peoplecommunicatebysendinge-mailsandchattingonline.Thewholeworldisconnected.TheInternetismakingtheworldsmaller,likeavillage.connect

v.

连接

connection

n.

关系，联系1.

connectAwithB

使A与B连接2.

connectsth.(tosth.)

使电、气、水等接通

3.connectsb./sth.(withsb./sth.)与……有联系，把……联系起来4.

Insteadofwritinglettersonpaper,peoplecommunicatebysendinge-mailsandchattingonline.

（1）instead

表示前面的事没做，反而做了后面的事。

eg.Hedidn’tgotobed.Instead,hewatchedTVforalongtime.

（2）insteadofsth./doingsth.“没有/代替做某事”。eg.HewatchedTVforalongtimeinsteadofgoingtobed.instead单独使用，可放于句尾，如果放于句中应该用逗号隔开。而insteadof通常放于句中，后面要加名词，代词，或者动名词。及时练习：（将下列句子改为同义句）1.Hedidn’tanswermyquestion.Instead,heakedsomequestions.He_____mesomequestions_________________myquestion.2.HewenttoJapanonvacationinsteadofgoingtoEngland.He_________toEngland.________,hewenttoJapan.askedinsteadofanweringdidn’tgoInsteadCarefulreadingComputershaveimprovedourlives,buttheyhavebroughtproblems,too.Forinstance,ifweworkoncomputerstoolong,wemaygetheadachesorsoreeyes.Ifweplaycomputergamestoomuch,wewon’thaveenoughtimetostudyorexercise.Besides,noteverythingwereadontheInternetistrueorgoodforus.Computershelpusatworkandathome,buttheymustbeusedproperly.forinstance=forexample

“例如”用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。suchas用来列举事物时，一般列举同类人或事物中的几个例子。eg.（1）Forinstance(Forexample),Japanhasalotofearthquakes.（2）Ilikefruits,suchasapples,pearsandbananas.

定语从句

5.

Besides,noteverythingwereadontheInternetistrueorgoodforus.

此外，并不是所有我们在网上读到的信息都是真实或对我们有益的。

（1）辨析：besides,except与beside①besides

意为“（包括......在内）除此之外”。

②except意为“除了（不包括......在内）”。

③beside

意为“在......旁边”，相当于nextto

和near。

（2）noteverything意为“不是每件事”。这是一个表示“部分否定”的句子。完全否定为NothingwereadontheInternetistrueorgoodforus.或NoneofthethingswereadontheInternetistrueorgoodforus.

选用besides,beside,except填空。1.Weallwenttothezoo________Tom.Hewasill.2.EmilycanalsospeakFrenchandJapanese________English.3.Marycameupandsat________me.exceptbesidesbeside

(1)besides与except用于肯定句时，except意为“除……之外（不再有）”；besides意为“除……之外（还有）”。

如：Ihaveanotherbluepenbesidesthisone.除了这支外，我还有另一支蓝色钢笔。（1+1，共2支）

WeallpassedtheexamexceptTom.我们都通过了考试，汤姆除外。（整体中……汤姆一人不及格）(2)except前几乎总有all、any、every、no及其复合词等词。如：Heansweredallthequestionsexceptthelastone.

除了最后一个问题没答外，其余问题他都答了。(3)except后接名词、代词、动名词和动词原形，这时except=but；

但except后跟副词、介词短语时，不能用but代替。如：Thewindowisneveropenexceptinsummer.这扇窗户从来不开，除夏季外。

Hedidnothingexcept/butcleanthehouse.他只是打扫了房子。

1.Howmanyusagesofthecomputerarethereintechnologyandbusiness?()A.SevenB.FourC.FiveD.Three

2.Whatdoestheword“place”meaninParagraph1?()A.地方B.住处C.放置D.下订单Scanning细读/精读

3.Whatcanthecomputersdoindailylife?()A.Playgamesandwatchmovies.B.DoshoppinganddobusinessathomeC.Sende-mailsandchatonlineD.Alltheabove.BDD4.whatdoesParagraphThreemainlytalkabout?A.Theusageofcomputer.1(3).pptxB.Theadvantage(优势)ofcomputer.C.Theproblemofcomputer.D.Theusageofcomputerindailylife.Ccomputersusageproblemworkdailylife_________________________ofaspaceship.helpdoctors___________________._______________infactories.helpbusinessmen_____________________.playgamesand_______________.____________and___________athome.____________bysendinge-mailsand__________________.getheadachesor___________.don’thaveenoughtime________________.somethingonInternetisnot____________.controlthespeedanddirectionfinddiseaseseasilycontroltherobotsplaceandcancelorderswatchmoviesdoshoppingdobusinesscommunicatechattingonlinesoreeyestostudyorexercisetrueorgood2.Completethefollowingdiagram.

TheImportanceofComputersTrytofindthestructure(结构)

ofthepassagewhenreading.

usageproblemPara.1Para.2Para.3Amindmap(思维导图):workdailylifeTheimportanceofComputers

开头Withthedevelopmentofscienceandsociety,Computershavebecomemoreandmoreimportanttous.结尾Inaword,thewatersupportingashipcanalsoupsetit.

Computers

alsohavesomedisadvantages.sotheymustbeusedinaproperway.Since

Computerscameintobeing,ourliveshasbeenchangedalot.MoreandmorepeoplehavetheirComputersthatcanbeusedtodomanythings.Forinstance,wecanuseittoplaygames,watchmoviesandlistentomusicathome.Besides,

ComputerscanbeusedtocommunicatewithothersbyWechatandQQ.WiththehelpofComputers,businessmencanplaceorcancelordersonline.What’smore,whenwestudentsgetintosometroublesinstudy,wecanuseittolookfortheinformation.whenwehavenotimetogoshopping,wecandosomeshoppingbyComputers.Post-reading

Body

BeginningEnding水能载舟，亦能覆舟。inthe1950sthere’snodoubt+that从句withthehelpofsb.=withone’shelpkeepdoingsth.1.在20世纪50年代2.毫无疑问3.在某人的帮助下4.一直做某事

让某人一直做某事5.出现6.多亏了某人7.而不是做某事8.举例9.太多（+不可数名词）

太keepsb.doingsth.comeintobeingthankstosb.insteadofdoingsth.forinstance=forexampletoomuch+不可数名词muchtoo+adj./adv.adj./adv.+enoughtodosth.makesb.dosth.makesb.+adj.turnon/turnoff10.足够......做某事11.让某人做某事

使某人......12.打开/关掉/

开大声点/关小声点13.像往常一样14.没有（三者及以上）15.换掉16.在世界上17.事实证明......turnup/turndownasusualnoneofthembreakdownintheworlditproves+that从句Step5：Post-reading书面表达：如今微信已成为我们生活中的一部分，尤其受到年轻人的欢迎。微信优点：①可以非常迅速地与朋友进行文字，表情等交流。②可以与朋友分享图片，音乐，视频等。③不仅能发送语音信息，而且能直接通话④使用时不受时间地点限制，而且免费。缺点：①容易单独会见微信朋友②容易玩的太痴迷③易遭受网络诈骗Step1:Trytowritedown5or6sentencesandjudgeitbyyourself.(2mins)Step2:Trytowritedown1moresentencewithyourdeskmate.Askyour

deskmatetohelpyoucorrectyourwriting.(2mins)Step3:Writedownthebeginningandendingsentences.Then,discussingroup.(3mins)Step4:Chooseavolunteertoshowthefinalshortpassageforourclass.(5mins）Writtingsteps

Nowadays,sinceWeChatcameintobeing,ithasbeenapartofourlife.It'sbecomingmoreandmorepopularwithyoungpeoplebecauseofthefollowingadvantages.

First,withthehelpofWeChat,wecancommunicatewithfriendsbysendingwordsinsteadofwritingletters.

Second,wecansharepictures,musicandvideoswiththem.Third,wecannotonlysendviocemessagestothembutalsospeaktothemdirectly.Besides,wecanuesitanytime.Lastbutnotleast,thankstotheWeChat,wecansavemoney,becauseweuseitforfree.

Inmyopinion,althoughWeChathasimprovedourlives,itshouldbeusedproperly.Weshouldn'tloseourselvesinit.Wehavetobecarefulaboutourpersonalinformation,somewebsitesusetheshortmessagestocheatothers.佳作赏析Supposeyouwereonaspecialdayin2030.Duringtheday,therewerenocomputersintheworld.Whattroublewouldyouhave?Youmaybeginlikethis:OneDayWithoutComputers

Today,whenIgotup,Ijustturnedonthecomputerasusual,butitdidn’twork.ThenItriedmybrother’sPC,myparents’,evenm