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《八年级下册英语unit7语法课件.ppt》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?SectionA3Grammarfocus~4cAguessinggane!激情导入学习目标1、知识目标:能掌握以下单词词组:gold,emperor,silk,nobody,stupid,cheat2、能力目标:提高学生用连词以摘要的形式描述故事的能力。3、情感目标:教育学生敢于与邪恶做斗争,体验祖国的文化和异域文化。Grammarfocus—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma?—It’s8,844.43met
2、ershigh.It’shigherthananyothermountain.—Whichisthedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.—DidyouknowthatChinaisoneoftheoldestcountriesintheworld?—Yes,Idid.It’smucholderthantheUS.大多数形容词有三个级。1.原级:Structure:as...as...像..….一样e.g.TimisastallasTom.2.比较级(用于两者之间的比较):Structur
3、e:形容词比较级+than...e.g.Thisboxisbiggerthanthatone.形容词和副词的比较级和最高级3.最高级(用于三者或三者以上的比较):Structure:the+形容词的最高级+of/in...e.g.Tomistheheaviestinourclass.Heisthemostpopularinourschool.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:clever—cleverer—cleverestfew—fewer—fewestsmall—smaller—smallest等。形容词、副词的比较级和最高级规则变
4、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:nice—nicer—nicestcute—cuter—cutestlarge—larger—largest3)以辅音字母+y结尾的变y为i+er或est如:easy—easier—easiesthappy—happier—happiest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:①fat—fatter—fattest②thin—thinner—thinnest③hot—hotter—hottest④red—redder—reddes
5、t⑤wet—wetter—wettest⑥big—bigger—biggest5)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:beautiful-morebeautiful-themostbeautiful又如:delicious,popular,important,interesting,expensive,creative双音节的词如:careful-morecareful-themostcarefuluseful-moreuseful-themostuseful少数单音节词也是这样,如:pleased—morepleased—th
6、emostpleasedtired—moretired—themosttiredb)不规则变化:good—better—bestwell—better—bestbad—worse—worstmany/much—more—mostfar—farther—farthest(距离远)far—further—furthest(程度深)old—elder—eldest(长幼)old—older—oldest(年龄)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。例如:ZhangHuaisthetallestofthethree.Hework
7、s(the)hardestinhisclass.最高级的用法2.最高级可被序数词以及much,byfar,nearly,almost,bynomeans,notquite,notreally,nothinglike等词语所修饰。例如:Thishatisbyfar/much/nearly/almost/notnearly/bynomeans/notquite/nothinglikethebiggest.Howmuchdid
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