新目标人教版八年级英语语法知识讲解 10页

形容词比较级的变化规则及用法教学设计教学目标：1．学习形容词比较级和最高级变化规则。2.学习形容词比较级和最高级的构成及用法。3.教育学生关注自己和身边的人。教学重点1．掌握形容词比较级和最高级变化规则。2.掌握形容词比较级和最高级的构成及用法教学过程Step1.复习1.让学生朗读上一节课学习的对话。2.检查作业。Step2.讲解新课教师展示图片，让学生看例句，能发现什么规律？J1）.Jimrunsfast.YaoMingrunsfasterthan2）.ZhouXunhaslonghair.LiuYifeihaslongerhairthanZhouXun LiuYifei’shairislongerthanZhouXun’s.3）.ZengZhiweiisshortTomisshorterthanZengZhiwei.4)LiuYifeiisthin.PeteristhinnerthanLiuYifei5)Thegreenoranges(桔子)arebig. Theorange（橙色的）onesarebigger6).LiYongisfunnyTedisfunnierthanLiYong.得出结论是：Step3形容词比较级的构成及用法.一、规则变化：1、一般直接在词尾加er;esttall—taller--tallestshort—shorter--shortest2、以字母e结尾的直接加r;nice—nicer—nicestfine—finer—finest 3、以辅音字母加y结尾的形容词，要变y为i再加er;estheavy—heavier—heaviestbusy—busier--busiest4、以重读闭音节结尾且末尾只有一个辅音字母的形容词，要双写末尾的辅音字母再加er;estthin—thinner--thinnesthot—hotter—hottestbig—bigger—biggest（注：双写必须同时符合以下条件a.以辅音字母+元音字母+辅音字母结尾；b.中间的元音字母发单元音；c.重读闭音。一般满足前两个条件多为双写的词）5、多音节形容词或部分双音节形容词变比较级在前面加more,最高级在前加mostloudly—moreloudly–mostloudlyimportant—moreimportant—mostbeautiful二、不规则形容词的比较级最高级原级比较级最高级good/wellbetterbestmany/muchmoremost littlelessleastill/bad/badlyworseworstfarfarther/furtherfarthest/furthestoldolder/elderoldest/eldest注：older一般指年龄大小；Myfatherisolderthanmymother.elder指长幼关系(一般修饰名词作定语);Myelderbrotherisadriver.farther指距离更远；further指抽像的.IwanttostudyEnglishfurther.三.形容词比较级的用法1、A+谓语动词+比较级+than+B，表示“A比B…”I’mmoreoutgoingthanmysister.Heworksharderthanme. 2、Which/Who+be+比较级，AorB？表示“A和B，哪一个更…”Whichisbetter,thisoneorthatone?3A+be+as+形容词或副词原级+as+B表示”A与B一样…”;A+benot+as/so+形容词或副词原级+asB,表示”A不如B…”Heisastallasme.–Heisn’tas/sotallasme.Damingrunsasfastasme.Damingdoesn’trunas/sofastasme.4．比较级前面可以加上表示“优劣程度”的词或短语，意思是“更…”，“…得…”。常见词有much,alittle,even,alot,agreatdeal等。Eg  HeismuchtallerthanI.他比我要高得多。 Ijumpalittlehigherthanhe.我跳得比他高一点点。想一想，这些词能修饰形容词或副词的原级吗？5 .比较级前面可以加上表示具体数量差别的结构,表示具体“大多少”，“小多少”，“长多少”，“短多少”等。Eg  Iamtwoyearsolderthanhe.我比他大两岁。Thisbuildingis20metershigherthanthatone.6．“比较级+and+比较级”表示“越来越……”。    Itisgettingwarmerandwarmer．天气越来越暖和。Heisrunningfasterandfaster．他跑得越来越快。0urcountryisbecomingmoreandmorebeautiful．我们祖国越来越美了。7．“themore…，themore…”表示“越……，就越……”，Themore，thebetter.多多益善。Themorecarefulyouare,thefewermistakesyouwillmake.你越细心，犯错就越少。8．“themore…ofthetwo…”表示“两个当中较。。。的一个” Thetallerofthetwoboysismybrother–Step4.练习–JimrunsasfastasYaoMing.–Jimdoesn’trunas/sofastasYaoMing.–YaoMingrunsfasterthanJim.LiYongisasfunnyasTed. LiYongisn’tas/sofunnyasTed.TedisfunnierthanLiYong.3、能修饰原级的单词和短语有very,too,as,so,quite,pretty,rather。Theflowersaretoobeautiful.比较级的副词及短语：much(…的多)、alot(…的多)、even(甚至…)、still（更…）、abit(…一点儿)，alittle(…一点儿)，far（远远…）ThiscityismuchmorebeautifulthanthatoneTodayisevenhotterthanyesterday.Step5.作业一.用括号内词语的正确形式填空1Theflowersarevery___.(beautiful)2Jackplaysfootball___thanDick.(bad)3Jimworks___thanTom.(hard) 4Thegirlsings___thantheboy.(loudly)5Thesunis_______thanthemoon.(big)6Whichquestionis___,thisoneorthatone?(easy)7Ihave___hairthanAnna.(short)Myhairis____(short)thanAnna’s.Anna’shairis_____(long)thanmine.8Icansing____(loudly)and____(clearly)thanher.9Theflowerispretty_____(beautiful).10Heistoo____(tired)towalk.二.选择填空1Youknow________aboutitthanTomdoes.A.evenlittleB.evenlessC.morelittleD.moreless2Theearthisgetting________. AwarmandwarmerB.warmerandwarmC.warmerandwarmerD.warmandwarm4Whichoneis________,footballorbasketball?5Whichcityis________,Beijing,orFuzhou?AbeautifulBthemorebeautifulCalittlemorebeautifulDthemostbeautiful6IthinkP.E.is________anyothersubject（其他任何一门muchmorepopularB.popularC.popularerD.muchpopular学科）.C.asimportantthanD.moreimportantthanA.themoreimportantB.themostimportant