英语人教版八年级下册Unit7 Grammar focus.pptx

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1、Unit7What'sthehighestmountainintheworld?GrammarFocus形容词和副词的比较级和最高级comparativesandsuperlativeswithadj.andadv.学习目标能记住形容词和副词的比较级和最高级的构成，会运用比较集合最高级的几个句型。short-shortersmall-smallernicenicersafesafer------bigthinheavyheavierhappyhappier找规律：bigbiggerthinthinnerdelicious

2、–interesting–important—carefully---quickly---slowly---easily---找规律：moredeliciousmoreinterestingmoreimportantmorecarefullymorequicklymoreslowlymoreeasily一般情况下，单音节或部分双音节的形容词/副词比较级直接加-er,最高级直接加-est。如：clever—cleverer—cleverestcheap—cheaper—cheapestfew—fewer—fewestsma

3、ll—smaller—smallestfast—faster—fastest形容词和副词的比较级和最高级1.构成的规则变化:b.以-e结尾的，比较级+-r,最高级+-st。如：large—larger—largestnice—nicer—nicestcute—cuter—cutestc.以辅音字母+y结尾的，变y为i+er或+est。busy—busier—busiestheavy—heavier—heaviesteasy—easier—easiesthappy—happier—happiestdirty—dirtier

4、—dirtiestd.以重读闭音节结尾，末尾只有一个辅音字母结尾的，双写最后一个辅音字母，再加+er或+est。如：big—bigger—biggestthin—thinner—thinnestfat—fatter—fattesthot—hotter—hotteste.多音节和部分双音节词，需在原级前+more构成比较级，+most构成最高级。如：important—moreimportant—mostimportantbeautiful—morebeautiful–mostbeautifulslowly—moreslo

5、wly—mostslowly2.不规则变化：原级比较级最高级good/wellbetterbestbad/illworseworstlittlelessleastmany/muchmoremostfarfarther/furtherfarthest/furthestoldolder/elderoldest/eldest1.good2.comfortable3.big4.happy5.cheap6.many7.difficult8.littlebetterbestmorecomfortablemostcomfortable

6、biggerbiggesthappierhappiestcheapercheapestmoremostmoredifficultmostdifficultlessleastPractice1.表示两者之间的选择,可用“Which/Who…+比较，…or…?”.2.表示两者之间的比较，通常用连词than引导，表示“更······一些”．3.much/far/alot,even,still,alittle/abit…修饰比较级,表示程度.Whorunsfaster,heorshe?Herunsfasterthanshe.He

7、runsmuchfasterthanshe.形容词和副词比较级的用法4.“比较级+and+比较级”表示“越来越……”5.“the+比较级,the+比较级”表示“越…,越…”6.表示不及另一方时，用“less+原级+than…”(双音节和多音节词)Hebecomeshealthierandhealthier.Themoreyouexercise,thehealthieryouwillbe.Sheislesshealthythanhe.Heishealthierthanshe.Ourcityisbecomingmoreand

8、morebeautiful.1.比较级+and+比较级越来越…2.the+比较级,the+比较级　越…,越…3._______________youare,_________mistakesyouwillmake.(你越仔细，做错的题目就越少）4.__________youeat,_________you’llbe.