八年级英语下册《Unit7Whatsthehighestmountainintheworld》（第5课时）课件（完整版）5

Unit7What’sthehighestmountainintheworld？(3a---selfcheck)学习目标1、能听说读写单词：whale,oil,protection,huge.2、能正确运用形容词和副词的比较级和最高级。higherhighestmoredangerousmostdangerouslongerlongestmorepopularmostpopularbodyBeijingmywishcrowdedstronger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.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－cleverest

few－fewer－fewest

small－smaller－smallest等。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－easiest

happy－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－thinnest

3.hot－hotter－hottest

4.red－redder－reddest5.wet－wetter－wettest

6.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－themostcareful

useful－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—best

bad－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)课堂小结形容词和副词的比较级和最高级当堂检测：1.Mybrotheris___moreoutgoingthanme.A.manyB.littleC.much2.October12thwasoneof______daysin2005.Shenzhou-VIwaslaunched(发射）successfully.A.excitingB.moreexcitingC.themostexciting3.Whichcityis______,Beijing,ShanghaiorFuzhou?A.beautifulB.morebeautifulC.themostbeautiful4._____childrenthereareinafamily,____theirlifewillbe.A.Theless,thebetterB.Fewer,richerC.Thefewer,thebetter5.Mobilephonesareverypopularnowandtheyare______thanbefore.A.cheapB.cheaperC.thecheapest6.Inourcity,it’s_____inJuly,butit’seven___inAugust.A.hotter,hottestB.hot,hotC.hot,hotter7.Ofthetwoskirts,thepinkoneis______.A.thenicestB.thenicerC.nicer8.Jack’shandwritingisas____asMike’s.A.goodB.betterC.best9.Wecandotheworkbetterwith____moneyand______people.A.little,fewB.less,fewerC.fe