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时间:2020-01-31
《英语人教版八年级下册Unit7 Grammar focus.pptx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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.
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