八年级英语上册UnitLessonAFamousFriend形容词比较级和最高级的构词规则课件（新版）冀教版

1、形容词比较级和最高级的形容词比较级和最高级的构词规则构词规则一、规则变化一、规则变化 1.单音节和少数双音节单词，一般在词尾加单音节和少数双音节单词，一般在词尾加“er”或或“est”。 如：如：clean, tall, small, cheap , short, long, light, high 2. 以不发音字母以不发音字母“e”结尾的单词，直接在词尾加结尾的单词，直接在词尾加 “r”或或“st”。 如：如：nice, late, close, fine, large, free, rude 3.以重读闭音节结尾的单词，如果词尾只有一个辅音以重读闭音节结尾的单词，如果词尾只有一个辅音字母

2、时，应先双写这一辅音字母，再加字母时，应先双写这一辅音字母，再加“er”或或“est”。 fat, big, red, thin, hot, fat, sad, wet 4. 以辅音字母以辅音字母+y结尾的单词，应先改结尾的单词，应先改“y”为为“i”，在，在加加“er”或或“est”。 happy , easy, heavy, healthy, busy, lucky, pretty, sunny, funny 5. 其他双音节单词和多音节单词，都在其前其他双音节单词和多音节单词，都在其前“more”或或“most”。(beautiful, interesting)二、二、 不规则变化不规则

3、变化 合二为一共三对合二为一共三对:“坏坏bad”,“病病ill”的比较级为的比较级为worse,最高级为最高级为worst.两多两多many/much”的比较级为的比较级为more,最高级为最高级为most.“两好两好good/well” 的比较级为的比较级为better, 最高级为最高级为best. 一分为二只两个，一是一分为二只两个，一是“远远far”的比较级为的比较级为farther/further,最高最高级为级为farthest/furthest.二是二是“老老old”的比较级为的比较级为 older/elder，最高，最高级为级为oldest/eldest. 还有一词还有一词li

4、ttle“少少”的比较级为的比较级为less,最高级为最高级为least.I. 原级用法原级用法:1. as+adj/ adv.的原级的原级+ as (肯肯,否否) , (not)soas (否否)eg. The ruler is as long as that one. He sings as well as Jack. He doesnt sing as(so) well as Jack.2. as much as, as many as 与与一样多一样多eg. I have done as much work as he did yesterday. You can take as ma

5、ny books as you can. II. 比较级用法比较级用法:1. 比较级比较级+than2. 比较级比较级+and+比较级比较级, 表示表示“越来越越来越” eg. warmer and warmer, nicer and nicer, more and more beautiful, more and more fun3. the+比较级比较级 the+ 比较级比较级 eg. The more you read the book, the more interesting you found . 4. 比较级的修饰语有比较级的修饰语有 : much, far, even, a l

6、ittle, a lot, a bit, rather, still, a great deal (大量大量) + adj./adv. 比较级比较级5. 当比较级后没有当比较级后没有than, 而为而为of the two的结构的结构,比较级前加比较级前加the. eg. The taller of the two girls is Mary.最高级用法最高级用法:1. 形容词最高级用于形容词最高级用于in, of 或或among的结构中的结构中, 形容词最高级前形容词最高级前+the eg. I am the best of (among)the three. He is the thinn

7、est boy in my class.2. 副词最高级不需副词最高级不需+the eg. Jim goes to bed latest in my family.)3. 比较级和最高级互换比较级和最高级互换(比较时要比较时要把自己排除把自己排除在外。注意比较的范在外。注意比较的范围围)eg. Shanghai is the largest city in China. Shanghai is larger than any other city in China. IV. Others Alices diet was less healthy than Dannys diet. (不如不如)

8、 (more than 胜于胜于)This T-shirt is the same size as that one.The red shirt is five yuan cheaper than that blue one.Which is the least interesting film youve ever seen? This park is three times as big as the Summer Palace. (倍数倍数+asas)This book cost twice as much as that one.I think English is as as mat

9、hs.important B. more important C. most important 2.Mother gets up in my family.early B. earlier C. earliest D. the earlier3. The next morning Jenny got up even .early B. earlier C. earliest D. the earliest4. Emily sings of the five girls.good B. well C. better D. best5. In fact, Delia is a little than her elder sister.tall B. taller C. tallest D. the tallest6. Heidi does not jump so as Jane.A. high B. higher C. highest D. the highest7. Of all the stars the sun is to us.close B. closer C. closest D. the closest8. Barbara felt much than before after dark.cold B. colder C. co