沪教版深圳市八年级上册英语Unit3Computers第3课时课件叶碧洁

Period3

GrammarModule2ScienceandtechnologyOxfordEnglishUnit

3ComputersWillcomputersmakeourlivesbetter?Revisionandintroduction1

Completethearticle.Thefirstcomputerswere_________thancars,butnowtheyarebecoming________and_________.

Computerscancalculateata_________speedthanwecan.Computersarenot_________thanhumanbeings,buttheymaybeabletodoa_________jobthanus.Inthepast,computerswere_______expensive,butnowtheyaremuch________.cheaperclevererfastersmallerbiggermoreGrammarAThecomparativeofadjectives2Whenwe

compare

twopeopleorthings,wecanusethecomparativeof

adjectives.betterbetterHowdoweformthecomparativeofadjectives?-ermorethanThefirstcomputerswere_________thancars,butnowtheyarebecoming________and_________.

Computerscancalculateata_________speedthanwecan.Computersarenot_________thanhumanbeings,buttheymaybeabletodoa_________jobthanus.Inthepast,computerswere_______expensive,butnowtheyaremuch________.cheaperclevererfastersmallerbiggermorebetterbetterthecomparativeofadjectives

比较级形式例词单音节形容词大多数单音节形容词+-erhigh→highersmall→smaller以-e结尾+-rlarge→largerwide→wider一个元音+一个辅音双写辅音字母，再加-erbig→biggerhot→hotter双音节形容词以-y或-ly结尾去掉y，再加-ierhappy→happiersilly→sillier以非重读元音、/l/或/R(r)/结尾+-er(-r)clever→cleverersimple→simpler以-ful，-less，-ed，-ing结尾more+形容词原级careful→morecarefulboring→moreboring多音节形容词含三个或三个以上音节more+形容词原级difficult→moredifficultpopular→morepopularmore

expensivelighterCompletetheconversationbelowandonpage40withthecomparativeoftheadjectivesfromthebox.heaviersmallerbigger

S1:______________________,CanadaorChina?(country/big)S2:______________________________.Which

country

is

biggerCanada

isbiggerthanChinaAskandanswerquestionsusingthefollowinginformation.Thefirstonehasbeendoneforyou.(country/big)CanadaChinaHongKongShanghaitheYellowRivertheYangtzeRiverHainanIslandTaiwanIslandMountainTaiYellowMountain(city/big)(river/long)(island/large)(mountain/high)S1:_______________________,CanandaorChina?(country/big)S2:_________________________.WhichcountryisbiggerCanadaisbiggerthanChinaAskandanswerquestionsusingthefollowinginformation.Thefirstonehasbeendoneforyou.Theredlaptopisthesmallestamong/ofthethree.Whenwecomparemorethantwopeopleorthings,weusethesuperlativeofadjectives.GrammarBThesuperlativeofadjectives3￥6,000￥4,600￥7,500Theredlaptopis

thesmallestamong/ofthethree,butitis___________________.themostexpensiveHowdoweformthesuperlativeofadjectives?-estmostthethesuperlativeofadjectives最高级形式例词单音节形容词大多数单音节形容词+-esthigh→highestsmall→smallest以-e结尾+-stlarge→largestwide→widest一个元音+一个辅音双写辅音字母，再加-estbig→biggesthot→hottest双音节形容词以-y或-ly结尾去掉y，再加-iesthappy→happiestsilly→silliest以非重读元音、/l/或/R(r)/结尾+-est(-st)clever→cleverestsimple→simplest以-ful，-less，-ed，-ing结尾most+形容词原级careful→mostcarefulboring→mostboring多音节形容词含三个或三个以上音节most+形容词原级difficult→mostdifficultpopular→mostpopularDavid:I’dliketoseesomeofyourcameras.Salesman:Certainly.Thisisthemostexpensivemodel.Thisisthecheapestmodel.Thisisthenewestandlightestmodel.abcB1Davidisshoppingforacamera.Lookatthephotosandwritetheletterofthecorrectmodelaftereachstatement.(1)________(2)________(3)________Tony:Didtheyshowyouanycameras?David:Yes.The(1)______________modelis(2)____________________________.The(3)_______________modelcosts(4)_____________.The(5)_______________modelwasmadein(6)_______.The(7)_________modelweighs(8)______________.expensivelightoldsmallsmallest99.8mmx56.4mmx24.5mmmostexpensiveoldestlightest¥3,5892010170gB2DavidtoldhisfriendTonyabouthisshoppingtrip.CompleteDavid’ssentenceswiththesuperlativeoftheadjectivesfromthebox.S1:Whichisthebiggest,theEarth,theMoonortheSun?S2:TheSunisthebiggest.theEarth,theMoonortheSun?(big)abee,abutterflyoranant?(small)iron,silverorgold?(valuable)abear,awhaleoranelephant?(heavy)aspaceship,aplaneoratrain?(fast)Askandanswerquestionsusingthefollowinginformation.Thefirstonehasbeendoneforyou.HHomework熟记形容词的比较级和最高级的构成方式。

以下各组事物中，你最喜欢或讨厌哪一个？请运用所给的含形容词的比较级和最高级的句型陈述理由。