U7(语法)介绍.ppt

(3) 最高级前可加序数词。 例如：The Yellow River is the second longest river in China. (4) 形容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。 例如：He is the laziest (student) in our class. 2. 形容词比较级和最高级的构成 规则变化 一般情况下，单音节或双音节的形容词比较级直接加-er, 最高级直接加-est。如： clever—cleverer—cleverest cheap—cheaper—cheapest few—fewer—fewest small—smaller—smallest young—younger—youngest b. 以-e 结尾的形容词，比较级+ -r,最高级+ -st。如： large—larger—largest nice—nicer—nicest cute—cuter—cutest c. 以辅音字母+y结尾的形容词，变y为i +er或+est。 busy—busier—busiest heavy—heavier—heaviest easy—easier—easiest happy—happier—happiest dirty—dirtier—dirtiest d. 以重读闭音节结尾，末尾只有一个辅音字母结 尾的词，双写最后一个辅音字母，再加+er或 +est。 如： big—bigger—biggest thin—thinner—thinnest fat—fatter—fattest hot—hotter—hottest e. 多音节和部分双音节形容词，需在原级前+more 构成比较级，+ most 构成最高级。如： important—more important—most important beautiful—more beautiful– most beautiful difficult—more difficult—most difficult 3. 不规则变化： 原级 比较级 最高级 good /well better best bad /ill worse worst little less least many /much more most far farther /further farthest /furthest old older /elder oldest /eldest 最高级规则变化口诀： 最高级，很容易，一般词尾加est。 (cheap-the cheapest) 词尾若有哑音e, 直接就加st。 (close-the closest) 重读闭音节, 单辅音字母要双写。 (big-the biggest) 辅音字母加y, 记得把y变为i。 (friendly-the friendliest) 多音节，考考你，the most到底加哪里？ (popular-the most popular) 1.We are going to the Green Restaurant for lunch. (就划线部分提问) ____________ you going for lunch? 2. Sam is the shortest in his class. (改为同义句) Sam is ________ than ____ _____ student in his class. Sam is _______ than _____ _____ students in his class. Sam is _______ than________ ______ in his class. 3. How do you like Screen City? (改为同义句) _______ do you __________ Screen City? Where are shorter any other What think of shorter the other anyone else shorter 练习：改写句子 The Comparative Superlative Degrees of Adjectives Adverbs 总 结 形容词和副词 比较级和最高级