人教版八年级英语下册unit7SectionA-Grammar-Focus---4c-(共37张PPT).ppt

Unit7Whatsthehighestmountainintheworld?,SectionAGrammarfocus4c,Doyouknowtheseinterestingplaces?,TheNileisthelongestriverintheworld.,Qomolangmaisthehighestmountainintheworld.,Qomolangma,TheNile,TheCaspianSeaisthedeepestlakeintheworld.,TheSaharaisthebiggestdesertintheworld.,TheSahara,TheCaspianSea,Whats_mountainintheworld?Qomolangma._isQomolangma?Its8,844.43metershigh.Its_thananyothermountain.,眼疾手快,thehighest,Howhigh,higher,Whichis_saltlakeintheworld?TheCaspianSeaisthedeepest_allthesaltlakes.DidyouknowthatChinaisoneofcountriesintheworld?Yes,Idid.Its_olderthantheUS.,thedeepest,of,theoldest,much,规则变化1)一般情况下，单音节或双音节的形容词/副词比较级er，最高级est。如:clevercleverercleverest,形容词、副词的比较级和最高级规则变化和不规则变化,2)以e结尾的词，比较级r，最高级st即可。如：nicenicernicest3)以辅音字母y结尾的变y为ier或est如:easyeasiereasiest再如：early,busy,heavy,dirty,lazy也如此。,4)重读闭音节，单辅音结尾的，双写这个辅音字母er或est的词：fatfatterfattestthinthinnerthinnesthothotterhottest,5)多音节和部分双音节的词需要在形容词原级前more构成比较级，themost构成最高级。如：beautifulmorebeautifulthemostbeautiful双音节的词如:usefulmoreusefulthemostuseful,少数单音节词也是这样，如：pleasedmorepleasedthemostpleasedb)不规则变化：good/wellbetterbestbad/illworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthestfurthest,用于俩者之间程度是否相同的比较。1.肯定形式用as+形容词原级+as+比较成分，表示:和一样.2.否定形式用notso(as)+形容词原级+as+比较成分，表示:前者不及后者。3.asmany/much()+as表示前后数量一样多。4.as+形容词原级+as+用作比喻的名词，表示:像一样(多用于口语),形容词原级,1.形容词比较级than+比较成分，表示：前者比后者.更（后面的动词往往省略）2.否定的比较：less+形容词原级+than+比较成分，表示：前者不及后者3.表示俩者之中较用the+比较级+ofthetwo.,形容词的比较级(用于两者之间的比较):,三者或三者以上相比，表示最高程度时，用“the+最高级”的结构表示。这种句式一般常有表示比较范围的介词短语。(in/of/among.)例如：ZhangHuaisthetallestofthethree.,最高级的用法,用代词的所有格也可表示范围。eg:Youaremyfondeststar.你是我最喜欢的明星。2.最高级可被序数词以及much，byfar，nearly，almost，notquite，notreally，等词语所修饰。例如：Thishatismuchthebiggest.Howmuchdidthesecondmostexpensivehat?,3.表示“最高程度”的形容词，如excellent，extreme，perfect等，没有最高级，也不能用比较级。4.形容词最高级修饰作表语或介词宾语的名词、代词时，被修饰的词往往省略。e.g.Heisthetallest(boy)inhisclass.5.作状语的副词最高级前可以不加定冠词。e.g.Ofalltheboyshecame(the)earliest.,比较级考点比较级修饰问题alittle,abit,even,still,much,alot,far等可修饰比较级。e.g.TomisalittletallerthanJim.,中考链接,同级比较e.g.Ourschoolisbiggerthanyours.the+比较级e.g.Lucyisthefatterofthetwogirls.,“a/an+比较级”表示“又一，再一”e.g.Lilyhasadoll,butshewantsabiggerone.隐性比较（没有than的情况）e.g.Whorunsfaster,LucyorLily?,越来越.比较级+and+比较级b.the+比较级+句子，the+比较级+句子e.g.Itsgettingcolderandcolder.Themoreyouexercise,thebetteryouare.,2.最高级考点说明：形容词的最高级前必须加the；副词的最高级前省略the。范围问题e.g.Tomisthetalleststudentintheclass.,“.之一”问题e.g.Beijingisoneofthebiggestcitiesintheworld.“the+序数词+最高级”e.g.Ithinkheisthesecondtallestboyinhisclass.,3.最高级的其他表达：e.g.Tomisthetalleststudentintheclass.Tomistallerthananyotherstudentintheclass.Tomistallerthanalltheotherstudentsintheclass.NootherstudentsaretallerthanTom.NostudentinourclassisastallasTom.,4a,Fillintheblankswiththecorrectformsofthewordsinthebox.,bigmuchpopularlongoldhigh,1.TheAmazonRiverisoneofthe_riversintheworld.Itsalittle_thantheYangtzeRiver.2.Qomolangmais8,844.43meters_.Itsoneofthemost_placesforseriousmountainclimbers.,longest,longer,high,popular,3.Nooceanintheworldisas_asthePacificOcean.4.AlthoughJapanis_thanCanada,itis_smaller.,bigmuchpopularlongoldhigh,big,older,much,Choosethebestanswer.1.Mybrotheris_moreoutgoingthanme.A.manyB.littleC.much2.October12thwasoneof_daysin2005.Shenzhou-VIwaslaunched(发射）successfully.A.excitingB.moreexcitingC.themostexciting,3.Whichcityis_,Beijing,ShanghaiorFuzhou?A.beautifulB.morebeautifulC.themostbeautiful4._childrenthereareinafamily,_theirlifewillbe.A.Theless,thebetterB.Fewer,richerC.Thefewer,thebetter,5.Mobilephonesareverypopularnowandtheyare_thanbefore.A.cheapB.cheaperC.thecheapest6.Inourcity,its_inJuly,butitseven_inAugust.A.hotter,hottestB.hot,hotC.hot,hotter,7.Ofthetwoskirts,thepinkoneis_.A.thenicestB.thenicerC.nicer8.Jackshandwritingisas_asMikes.A.goodB.betterC.best,9.Wecandotheworkbetterwith_moneyand_people.A.little,fewB.less,fewerC.fewer,less10.JimisthetalleststudentinourclassandTomisthesecond_one.A.tallB.tallerC.tallest,Writetwocomparisonsabouttwotopics.Writetruefacts.,Tworivers:_and_,e.g.,4b,TheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.,theYangtzeRiver,theAmazonRiver,Twocities:_and_1._.2._.,Twoanimals:_and_1._.2._.,Twocities:_and_1._2._,ShanghaiisbiggerthanLanzhouandhasalargerpopulationthanLanzhou.,Shanghai,Lanzhou,LanzhouisasmodernasShanghai.,Twoanimals:_and_1._2._,MonkeyDog,Adogisbiggerthanamonkey.,Amonkeyissmallerthanadog,butitclimbsatreefasterthanadog.,Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.,1._2._3._4._5._,e.g.,4c,Whatisthehighestbuildinginourcity?,Whatisthebusiestbusstationinourcity?,Whatisthelargestshoppingmallinourcity?,Whatisthebiggestparkinourcity?,Whatisthelongestroadinourcity?,Discussion:,_3._4._5._,oldperson,popularmiddleschool,deliciousfood,beautifulpark,largemovietheater,Trytowritefivequestionswiththewordsgivenbelow.,1.Hainanisaverylargeisland.Itsthesecond_islandinChina.A.largeB.largerC.largest2.Anelephantis_thanahorse.muchheavyB.muchheavierC.heaviest,学以致用,C,B,3.The_friendsyouhave,the_youwillbe.A.more,happyB.many,happyC.more,happierD.many,happier4.Whenheheardacryforhelp,heranoutas_ashecould.hardlyB.quicklyC.finallyD.slowly,C,B,5.ThisplaceisnotbigenoughforLucysbirthdayparty.Weshouldfinda_one.bigB.smallC.biggerD.smaller,C,6.Whichis_seasoninBeijing?Ithinkitsautumn.A.goodB.betterC.bestD.thebest7.Chinais_intheworld.A.thethirdlargestB.thelargestthirdC.thethirdlargeD.athirdlargest,D,A,8.IstudyEnglishas_asmybrother