英语人教版八年级下册Unit7 SectionB 第二课时.ppt

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1、Unit7What’sthehighestmountainintheworld？selfcheckhigherhighestmoredangerousmostdangerouslongerlongestmorepopularmostpopularbodyBeijingmywishcrowdedstronger形容词和副词的比较级和最高级大多数形容词有三个级。原级:常用结构as...as...像..….一样ZhangHongisastallasTom.张红和汤姆一样高。2)比较级(用于两者之间的比较)常用结构：形容词比较级＋than...HeistallerthanI.

2、他比我高。Grammar3)最高级(用于三者或三者以上的比较)，常用结构:the+形容词的最高级＋of/in...Heisthetallestofthethree.他是这三个人中最高的。Heisthefunniestinhisclass.他是他们班最有趣的。形容词、副词比较级和最高规则变化和不规则变化。规则变化1)一般情况下，单音节或双音节的形容词（或副词）比较级＋er，最高级＋est如：clever－cleverer－cleverestfew－fewer－fewestsmall－smaller－smallest等。2)以e结尾的词，比较级＋r，最高级＋st即可。如：

3、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)双写最后一个辅音字母＋er或est的词,同学要用心去记。fat－fatter－fattest2.thin－thinner－thinnest3.hot－hotter－hottest4.red－redder－reddest5.wet－wetter－wettest6.

4、big－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－themostpleas

5、edtired－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)Oneofthem____endangereda_____intheworldisthegiantpanda.Thereareonlyabout1,600left.(剩下）ostnima

6、ls1.玻璃杯里还剩下一点水。2.我们还剩下一点时间。Thereisalittlewaterleftintheglass.Wehavealittletimeleft.Exercise:1.Thebiggestd______intheworldistheSahara.2.Theriveristood______toswimin.3.Chinaisoneoftheoldest__________(文明)intheworld.desertdirtybamboocivilizations4.Thes______ofthefastestanimalis120kilometers

7、perhour.5.－Whats______doyouneedforyourcoat?－Iwantalargeone.speedsize单项选择。()1.Mybrotheris_____moreoutgoingthanme.A.manyB.littleC.much()2.October12thwasoneof______daysin2005.Shenzhou-VIwaslaunched(发射）successfully.A.excitingB.moreexcitingC.themostexciting()3.Whichcityis______,Beij