八年级英语上册 Unit 3 Modern machines Language课件 牛津广州版

Unit3ModernmachinesLanguageThecomparativeandsuperlativeofadjectives形容词的比较级和最高级英语中有时需要对两者或多者进行比较，这时就需要用形容词的比较等级。比较等级分为：

原级:cheapexpensive比较级:cheaper

moreexpensive最高级:cheapest

the

mostexpensiveThedogisbiggerthanthemouse.Thehorseisthe

biggest

ofall.Theboyisyoungerthantheman.Thebabyistheyoungestofthethree.bigbiggerbiggestyoungyoungeryoungestJimLiLeiTomLiLeiistallerthanTom.Jimisthetallestofall.￥30￥20￥10Theyellowcoatischeaperthanthepurpleone.Thebrowncoatisthecheapestof

thethree.形容词比较级和最高级的构成：单音节形容词的构成方法原级比较级最高级一般在词尾加-er或-est

tall

taller

tallest以字母e结尾的单词后加-r或-st

nicefine

nicer

finer

nicest

finest以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-estearlyheavy

earlierheavier

earliest

heaviest规则变化moreusefulmorebeautifulthinnerbiggerhottermostusefulmostbeautifulthinnestbiggesthottestusefulbeautiful多音节词或少数双音节词，在词前加more或mostthinbighot重读闭音节词尾只有一个辅音字母时，应先双写这个辅音字母，再加-er或-estcheapsmalloldhighnicesafehappyheavyearlyeasybigwet写出下列形容词的比较级和最高级：importantdifficultangryfamousinterestingexcitedgoodillfarlittleFillintheblankswiththeproperformsofthewordsgiven.Mysisteris_____thanRichard.(old)Hehas_____homeworktodothanIdotoday.(much)Isfootball____________thanvolleyball?(exciting)Thetownis_______thanitusedtobe.(clean)I’m________thanhisbrother,Jim.(clever)Ithinkshelooks_______thaninthephoto.(pretty)oldermoremoreexcitingcleanerclevererprettier7.Thisroadis______________thantheotherone.(dangerous)8.Thisproblemis______________thanIthought.(important)9.Canyouwalk_______thanayoungman?(far)10.Insummeritismuch______inWuhanthaninBeijing.(hot)11.Whichis________,Room201orRoom108?(bright)12.Tomis_________boyinourclass.(old)moredangerousmoreimportantfartherbrighterhottertheoldest13.Thisis_______citythatwehaveevervisited.(good)14.Itwasthe______dayofhislife.(bad)15.Susan’sflowersare________________ofall.(beautiful)16.Sueis___________ofthegirlsintheclass.(clever)Sheansweredallthequestionsexcept_______________one.(difficult)17.Winteris______thanautumn;itis__________ofthefourseasons.(cold)thebestworstthemostbeautifulthecleverestthemostdifficultcolderthecoldest18.Wewatchedavery______playthedaybeforeyesterday.(bore)19.Pantscost_____thanshorts.Shortsdon’tcostas_____aspants.(much)20.Thegirlseems__________todaythanyesterday.Thegirldidn’tseemso_____yesterdayastoday.(lively)boringmoremuchmorelivelylivelyAfriendiseasierlostthanfound.

2.Enoughisasgoodasafeast.

3.Bettertodowellthantosaywell.

4.Betterthelastsmilethanthefirstlaughter.

“比较”出来的英语朋友易失不易得。

知足常乐。说得好不如做得好。宁可最后微笑，不可首先狂喜。5.Doingisbetterthansaying.

6.Twoheadsarebetterthanone.

7.Goodtobeginwell,bettertoendwell.

8.Aneyefindsmoretruththantwoears.

会说不如会做。两人智慧胜一人。善始好，善终更佳。百闻不如一见。“比较”出来的英语AThecomparativeofadjectivesA2Workinpairstodothisquiz.S1asksthequestions.S2usestheinformationintheboxtoanswerthequestions.theNile—6,700kmtheAmazon—6,300kmAfrica—30,233,000sqkmAsia—44,426,000sqkmGreenland—2,715,592sqkmBorneo—746,543sqkmtheAtlantic—9,219mthePacific—11,035mS1:(river/long)__________________,theNileortheAmazon?S2:_______________.2.S1:(continent/big)______________________,AfricaorAsia?S2:____________.3.S1:(island/large)___________________,GreenlandorBorneo?S2:_________________.4.S1:(ocean/deep)____________________,theAtlanticorthePacific?S2:___________________.WhichriverislongerTheNileislongerWhichcontinentisbiggerAsiaisbiggerWhichislandislargerGreenlandislargerWhichoceanisdeeperThePacificisdeeperTheAmazon____________________.2.Africa__________________.3.Borneo______________________.4.TheAtlantic_________________________.A3Makesentencesusingtheadjectivesinthebox.

shallowshortsmall

isshorterthantheNileissmallerthanAsiaissmallerthanGreenlandisshallowerthanthePacificBThesuperlativeofadjectivesB2Later,PansytoldTonyabouthershoppingtrip.CompletePansy’ssentencesusingtheadjectivesinthebox.TONY:Didtheyshowyouanyinterestingcameras?PANSY:Yes.(1)The____________________costs_______.(2)The___________wasmadein_____.(3)The_____________weighs_______.

expensivelightold

mostexpensivemodeloldestmodel2005lightestmodel￥1,5800.16kgB3Workinpairs.S1asksthequestions.S2givestheanswers.Followtheexample.Remembertouse

the

withtheadjectives.Example:(big)Earth,themoonorthesun?

S1:

S2:Whichisthebiggest,Earth,themoonorthesun?Thesunisthebiggest.(small)abee,abutterflyoramosquito?2.(large)theAtlantic,thePacificortheIndianOcean?3.(valuable)iron,silverorgold?S1:Whichisthesmallest,abee,abutterflyoramosquito?S2:Amosquitoisthesmallest.S1:Whichisthelargest,theAtlantic,thePacificortheIndianOcean?S2:ThePacificisthelargest.S1:Whichisthemostvaluable,iron,silverorgold?S2:Goldisthemostvaluable.4.(hot)theNorthPole,theSouthPoleortheGobiDesert?5.(heavy)abear,awhaleoranelephant?S1:Whichisthehottest,theNorthPole,theSouthPoleortheGobiDesert?S2:TheGobiDesertisthehottest.S1:Whichistheheaviest,abear,awhaleoranelephant?S2:Awhaleistheheaviest.6.(senior)apoliceman,aninspectororachiefinspector?7.(fast)arocket,aplaneoratrain?S1:Whichisthemostsenior,apoliceman,aninspectororachiefinspector?S2:Achiefinspectoristhemostsenior.S1:Whichisthefastest,arocket,aplaneoratrain?S2:Arocketisthefastest.CThecomparativeandsuperlativeofgood,badandfarAfewadjectivesareirregular:good—better—bestbad—worse—worstfar—farther—farthestC1LookattheschoolrecordbelowandwriteT(True)orF(False)afterthesentences.1.Alicehasthebestmarksinart.2.ErichasworsemarksinsciencethanMartin.3.BelindahasbettermarksinartthanDaisy.4.Peterhastheworstmarksinscience.5.Pauline’shomeisfartherfromschoolthanPaul’s.TTTFFC2Workinpairs.S1asksS2questionsabouttheschoolrecord,usingtheadjectivesinbracketsinthecorrectform.S2replies.S1:Who_________________inart?(good)S2:_____.2.S1:Who_______________inart,BelindaorDaisy?(good)S2:_____.3.S1:Who_________________inscience?(good)S2:_____.4.S1:Who_______________inart,PaulorMartin?(good)S2:____.

hasthebestmarksAlicehasbettermarksDa