英语人教版八年级下册unit 7section a1a--2d.ppt

Unit7What sthehighestmountainintheworld 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 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 fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest 5 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 themostpleasedtired moretired themosttiredb 不规则变化 good better bestwell better bestbad worse worstmany much more most far 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 Heworks the hardestinhisclass 最高级的用法 比较级考点 比较级修饰问题alittle abit even still much alot far等可修饰比较级 e g TomisalittletallerthanJim Thisbookismuchmoreinterestingthanthatone 中考链接 同级比较e g TheweatherinBeijingiscolderthanthatinXi an Ourschoolisbiggerthanyours the 比较级e g Lucyisthefatterofthetwogirls a an 比较级 表示 又一 再一 e g Lilyhasadoll butshewantsabiggerone 隐性比较 没有than的情况 e g Whorunsfaster LucyorLily You dbettercomeearliernexttime Heworkedhardlastterm butheworksevenharderthisterm 越来越 比较级 and 比较级b the 比较级 句子 the 比较级 句子e g It sgettingcolderandcolder Themoreyouexercise thebetteryouare 2 最高级考点说明 形容词的最高级前必须加the 副词的最高级前省略the 范围问题e g Tomisthetalleststudentintheclass Springisthebestseasonoftheyear 之一 问题e g Beijingisoneofthebiggestcitiesintheworld the 序数词 最高级 e g Ithinkheisthesecondtallestboyinhisclass 3 比较级和最高级的转换e g Tomisthetalleststudentintheclass Tomistallerthananyotherstudentintheclass Tomistallerthanalltheotherstudentsintheclass 同级比较 as adj adv ase g SheisasthinasLily HewritesascarefullyasLinda not as so adj adv ase g Tonydidn trunsofastasCarter Fillintheblankswiththecorrectformsofthewordsinthebox bigmuchpopularlongoldhigh 1 TheAmazonRiverisoneofthe riversintheworld It salittle thantheYangtzeRiver 2 Qomolangmais8 844 43meters It soneofthemost placesforseriousmountainclimbers longest longer high popular 4a 3 Nooceanintheworldisas asthePacificOcean 4 AlthoughJapanis thanCanada itis smaller