八年级英语Modern machines Language课件2.ppt

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1、Unit 3 Modern machinesThe comparative and superlative of adjectivesThe comparative and superlative of adjectives英语中有时需要对两者或多者进行比较，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。这时就需要用形容词的比较等级。比较等级分为：比较等级分为：原级原级:cheapexpensive比较级比较级:cheapermoreexpensive最高级最高级:cheapestthemostexpensiveThedogisbiggerthanthemouse.Theh

2、orseisthebiggestofall.Theboyisyoungerthantheman.Thebabyistheyoungestofthethree.bigbiggerbiggestyoungyoungeryoungestJimLiLeiTomLiLeiistallerthanTom.Jimisthetallestofall.￥30￥20￥10Theyellowcoatischeaperthanthepurpleone.Thebrowncoatisthecheapestofthethree.形容词比较级和最高级的构成：形容词比较级和最高级的构成：单音节形容词的单音节形容词的构成方法构成

3、方法原级原级比较级比较级最高级最高级一般在词尾加一般在词尾加-er或或-est tall taller tallest以字母以字母e结尾的结尾的单词后加单词后加-r或或-st nicefinenicerfinernicestfinest以以“辅音字母辅音字母+y”结尾的双音节词，结尾的双音节词，先改先改y为为i,再加再加-er或或-estearlyheavyearlierheavierearliestheaviest规则变化规则变化moreusefulmorebeautifulthinnerbiggerhottermostusefulmostbeautifulthinnestbiggestho

4、ttestusefulbeautiful多多音节词音节词 或少数或少数双音节词双音节词，在词，在词前加前加more或或 mostthinbighot重读闭音节词尾重读闭音节词尾只有一个辅音字只有一个辅音字母时，应先母时，应先双写双写这个辅音字母，这个辅音字母，再加再加-er或或-estcheapsmalloldhighnicesafehappyheavyearlyeasybigwet写出下列形容词的写出下列形容词的比较级和最高级：比较级和最高级：importantdifficultangryfamousinterestingexcitedgoodillfarlittleFill in the

5、blanks with the proper forms of the words given.1.Mysisteris_thanRichard.(old)2.Hehas_homeworktodothanIdotoday.(much)3.Isfootball_thanvolleyball?(exciting)4.Thetownis_thanitusedtobe.(clean)5.Im_thanhisbrother,Jim.(clever)6.Ithinkshelooks_thaninthephoto.(pretty)oldermoremoreexcitingcleanerclevererpre

6、ttier7.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_cityth

7、atwehaveevervisited.(good)14.Itwasthe_dayofhislife.(bad)15.Susansflowersare_ofall.(beautiful)16.Sueis_ofthegirlsintheclass.(clever)Sheansweredallthequestionsexcept_one.(difficult)17.Winteris_thanautumn;itis_ofthefourseasons.(cold)thebestworstthemostbeautifulthecleverestthemostdifficultcolderthecolde

8、st18.Wewatchedavery_playthedaybeforeyesterday.(bore)19.Pantscost_thanshorts.Shortsdontcostas_aspants.(much)20.Thegirlseems_todaythanyesterday.Thegirldidntseemso_yesterdayastoday.(lively)boringmoremuchmorelivelylively1.Afriendiseasierlostthanfound.2.Enoughisasgoodasafeast.3.Bettertodowellthantosaywel

9、l.4.Betterthelastsmilethanthefirstlaughter.“比较比较”出来的英语出来的英语朋友易失不易得。朋友易失不易得。知足常乐。知足常乐。说得好不如做得好。说得好不如做得好。宁可最后微笑，不可首先狂喜。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。会说不如会做。两人智慧胜一人。两人智慧胜一人。善始好，善终更佳。善始好，善终更佳。百

10、闻不如一见。百闻不如一见。“比较比较”出来的英语出来的英语AThe comparative of adjectives A2Work in pairs to do this quiz.S1 asks the questions.S2 uses the information in the box to answer the questions.theNile6,700kmtheAmazon6,300kmAfrica30,233,000sqkmAsia44,426,000sqkmGreenland2,715,592sqkmBorneo746,543sqkmtheAtlantic9,219mthe

11、Pacific11,035m1.S1:(river/long)_,theNileortheAmazon?S2:_.2.S1:(continent/big)_,AfricaorAsia?S2:_.3.S1:(island/large)_,GreenlandorBorneo?S2:_.4.S1:(ocean/deep)_,theAtlanticorthePacific?S2:_.WhichriverislongerTheNileislongerWhichcontinentisbiggerAsiaisbiggerWhichislandislargerGreenlandislargerWhichoce

12、anisdeeperThePacificisdeeper1.TheAmazon_.2.Africa_.3.Borneo_.4.TheAtlantic_.A3Make sentences using the adjectives in the box.shallow short smallisshorterthantheNileissmallerthanAsiaissmallerthanGreenlandisshallowerthanthePacificBThe superlative of adjectives B2Later,Pansy told Tony abouther shopping

13、 trip.CompletePansys sentences using theadjectives in the box.TONY:Didtheyshowyouanyinterestingcameras?PANSY:Yes.(1)The_costs_.(2)The_wasmadein_.(3)The_weighs_.expensive light oldmostexpensivemodeloldestmodel2005lightestmodel￥1,5800.16kgB3 Work in pairs.S1 asks the questions.S2 gives the answers.Fol

14、low the example.Remember to use the with the adjectives.Example:(big)Earth,themoonorthesun?S1:S2:Whichisthebiggest,Earth,themoonorthesun?Thesunisthebiggest.1.(small)abee,abutterflyoramosquito?2.(large)theAtlantic,thePacificortheIndianOcean?3.(valuable)iron,silverorgold?S1:Whichisthesmallest,abee,abu

15、tterflyoramosquito?S2:Amosquitoisthesmallest.S1:Whichisthelargest,theAtlantic,thePacificortheIndianOcean?S2:ThePacificisthelargest.S1:Whichisthemostvaluable,iron,silverorgold?S2:Goldisthemostvaluable.4.(hot)theNorthPole,theSouthPoleortheGobiDesert?5.(heavy)abear,awhaleoranelephant?S1:Whichisthehotte

16、st,theNorthPole,theSouthPoleortheGobiDesert?S2:TheGobiDesertisthehottest.S1:Whichistheheaviest,abear,awhaleoranelephant?S2:Awhaleistheheaviest.6.(senior)apoliceman,aninspectororachiefinspector?7.(fast)arocket,aplaneoratrain?S1:Whichisthemostsenior,apoliceman,aninspectororachiefinspector?S2:Achiefins

17、pectoristhemostsenior.S1:Whichisthefastest,arocket,aplaneoratrain?S2:Arocketisthefastest.CThe comparative and superlative of good,bad and far A few adjectives are irregular:good better best bad worse worst far farther farthestC1LookattheschoolrecordbelowandwriteT(True)orF(False)afterthesentences.1.A

18、licehasthebestmarksinart.2.ErichasworsemarksinsciencethanMartin.3.BelindahasbettermarksinartthanDaisy.4.Peterhastheworstmarksinscience.5.PaulineshomeisfartherfromschoolthanPauls.TTTFFC2Workinpairs.S1asksS2questionsabouttheschoolrecord,usingtheadjectivesinbracketsinthecorrectform.S2replies.1.S1:Who_i

19、nart?(good)S2:_.2.S1:Who_inart,BelindaorDaisy?(good)S2:_.3.S1:Who_inscience?(good)S2:_.4.S1:Who_inart,PaulorMartin?(good)S2:_.hasthebestmarksAlicehasbettermarksDaisyhasthebestmarksDaisyhasbettermarksPaul5.S1:Who_inscience,EricorAlice?(bad)S2:_.6.S1:Who_inart?(bad)S2:_.7.S1:Whosehomeis_school,Belinda

20、sorMartins?(far)S2:_.8.S1:Whosehomeis_school?(far)S2:_.9.S1:Whosehomeis_toschool?(near)S2:_.hasworsemarksErichastheworstmarksPaulinefarther(away)fromMartinsthefarthest(away)fromDaisysthenearestEricsC3 Read the History teachers statement,and put the names in the table below.1.782.753.734.705.646.637.61NameHistorymarksAlicepeterDaisyBelindaPaulEricMartin