Unit 7 What’s the highest mountain in the world？ part A 课件4

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1、Unit7What'sthehighestmountainintheworld?Grammarfocus—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma?—It’s8,844.43metershigh.It’shigherthananyothermountain.—Whichisthedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.—DidyouknowthatChinaisoneoftheoldestco

2、untriesintheworld?—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):Structure：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.Heisthemostp

3、opularinourschool.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—happies

4、t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—reddest⑤wet—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,

5、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—themostpleasedtired—moretired—themosttiredb)不规则变化：good—better—bestwell—better—bestbad—worse—worstmany/much—more—mostfar—farther—farthest(距离远)far—fur

6、ther—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.Heworks(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

7、／almost／notnearly／bynomeans／notquite／nothinglikethebiggest.Howmuchdidthesecondmostexpensivehatcoat?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