2023学年完整公开课版Unit4Inventions教学

Unit4InventionsFourgreatinventionsinancientChina：compasspapergunpowderprintingPrintingandpaperhavebeeninventedinancientChina.Theyhavebeenusedforages.printingpaperWhatotherinventionsdoyouknow?Practiceinpairs.batterydigitalcameracellphonecomputercharge充电Washingmachinefridgee-bikeplaneMoreinventionstrainrobotcarMoreinventionsane-mailaletterIthink…isbetterbecause…Competition.Thinkabout:Whichdoyoulikebetter,ordinaryshoppingorshoppingonline?Why?shoppingonlineordinaryshoppingGrammarThecomparativeandsuperlativeformsofsomeadjectivesareirregular,suchas:good,bad,faradjectivecomparativesuperlativegoodbetterbestbadworseworstfarfarther/furtherthefarthest/furthestmany/muchmoremostlittlelessleastas…as结构其基本意思为“与……一样”，其中的第一个as为副词，其后通常接形容词或副词(用原级)，第二个as可用作介词(后接名词或代词)或连词(后接从句)。使用时应注意以下几点。

1.

在否定句中,第一个as也可换成soHedoesn’tstudyas/sohardashisbrother.

他学习不如他弟弟努力。2.

若涉及数量或程度，可用“asmuch+不可数名

词+as”和“asmany+复数名词+as”。如：You’vemadeasmanymistakesasIhave.

你犯的错误和我犯的一样多。Ihaven’tgotasmuchmoneyasIthought.

我不像原来想像的有那么多钱。其间接形容词时，有时该形容词还可修饰另一名词，但这个名词应带有不定冠词(注意词序)。如：Sheisasgoodateacherashermother.她和她妈妈一样是位好老师。也可说:Sheisateacherasgoodashermother.但不说:Sheisasagoodteacherashermother.3.第二个as后接从句时，该as通常为连词，但有时这

个as还充当其后从句的主语或宾语，此时该as实为

关系代词。如：Igavehimasmuchashecouldeat.

他能吃多少，我就给了他多少。We’vegotfoodforasmanypeopleaswantit.

我们的食物，无论多少人吃都够了。4.该结构根据情况可用使用以下修饰语。如：(not)nearly,almost,just,nothinglike,exactly,notquite,half,twice,threetimes,等，并且这些修

饰语必须置于第一个as之前，而不能置于其后。如：Hedoesn’tplayhalfaswellashissister.

他演奏的水平不及他姐姐的一半。Thisdressistwiceasexpensiveasthat.这件连衣裙比那件贵一倍。6.在非正式场合(尤其是美国英语中)，有时可以省略

第一个as。如：Whenoverforty,hemarriedawomanpooras

himself.他在40多岁时娶了一个像他本人一样穷的女人。另外，若意思明确，有时可省略第二个as及其后

的相关词语。如：Theradiosinthatshopwillbecheaper,butnotasgood.那家商店的收音机会便宜些，但质量没那么好。

1.—NeedIwashyourcarafterrepairingit？—Yes,thatwouldbemuch__.A.goodB.wellC.betterD.best2.Sheisverygoodatpainting.Shecanpaint__herteacher.A.asbetterasB.aswellas

C.asgoodasD.sowellas3.MyfriendTonyhas__hairthanIandhe's__thanI.A.long,outgong

B.morelonger,moreoutgoingC.longer,moreoutgoing

D.longer,outgoing√√√√

4.IthinkEnglishisas__aschinese.A.importantB.moreimportantC.mostimportantD.themostimportant5.Mysisterisreallygoodathighjump.Shejumps

______thantheotherstudentsinherschool.A.thehighestB.veryhighC.muchhigherD.toohigh√√√6.Shealwaysdoesherhomework____thanher

brother. A.morecarefulB.careful C.morecarefullyD.carefully7.Shelooksvery__Ithinksheneedstohavea

rest.A.tiredB.hardC.wellD.hardly8.TheairinBeijingisgettingmuch__nowthana

fewyearsago.A.cleanB.cleaner

C.cleanestD.thecleanest√√√

9.Nowadayssciencefictionisn’tas__as

cartoonsamongteenagers.A.popularB.morepopular

C.lesspopularD.themostpopular10.WearegladtoseethatShanghaiisdeveloping

___theseyearsthaneverbefore.A.quicklyB.lessquickly

C.morequicklyD.themostquickly√√

11.Jackhasthreefriends.Mikeisthe___ofthefour.A.mostcleverB.moreclever C.cleverest D.clever12.—Remember,boysandgirls.__youwork,___resultyouwillget.—Weknow,MissGao.A.Thebetter,theharderB.Theharder,thebetter C.Thehard,thebetterD.Theharder,thegood13.Theboxisvery__.Ican'tcarryit.A.heavyB.heavier C.heaviest D.heavily14.LiHua'sshoesareas__asZhangHua's.A.cheapB.cheaper C.thecheaper D.thecheapest

15.Inthepianocontest,mybrotherdidn'tplaywellandIdid__.A.verywellB.muchbetter C.verygood D.evenworse√√√√√16.NowChinahasjoinedWTO,soIthinkEnglish

is__usefulthanbefore.A.moreB.mostC.much D.many17.Mum,thisT-thirtismuchtoosmallforme.

Wouldyoubuymea__one?A.niceB.largeC.nicer D.larger√√18.Thisyearthevillagershaveproduced

__rice__theydidtwoyearsago.A.less,thanB.asless,asC.fewer,thanD.asfew,as

19.--Doyouenjoyt