八年级英语比较级和最高级讲解与练习.doc

1、 比较级和最高级一、比较级的用法:当两个人或事物（A 和 B）进行比较时，我们需要用到形容词（副词）的原级或者比较级1 表达“A 和 B 一样”，用 asas 的结构。公式: A+be 动词+as+形容词原级+as+BA+实义动词+as+ 副词原级+as+BEg I am as tall as you. He runs as fast as I. 我的房间和她的一样大。他游得和我一样好。2表达“A 不如 B”用 not asas 的结构。公式: A+be 动词的否定形式+as+形容词原级+as+BA+助词的否定形式+ 动词+as+ 形容词原级+as+BEg I am not as tall a

2、s you. He doesnt run as fast as I. 我的房间没有他的大。我没有他游得好。3. 表达“A 大于 B”用“比较级+than”的结构。公式: A+be 动词+形容词比较级+than+BA+实义动词 +副词比较级+than+BEg I am taller than you.我比你高。He runs faster than I. 他跑得比我快。我的房间比他的大。 我游得比他的好。 4. 表示 A 是.中最大的结构公式： A+be 动词+the +形容词最高级+范围A+实义动词+the+ 形容词最高级+范围I am the tallest in my class. He

3、runs the fastest in my class. 我的房间是这里最大的。 我游得是我们班最好的。 二.形容词和副词的比较级和最高级的变化方法如下(1) 符合规则的：(2)几个不规则的形容词和副词的比较级和最高级如下表：原 级 比较级 最高级good , well better bestbad , ill worse worstmany , much more mostlittle less leastfar farther / further farthest / furthest练习 1：写出下列词的比较级和最高级tall slow small fast smart few nic

4、e fine large late brave pretty easy funny happy lazy heavy dirty dry early 情 况 加 法 例 词一 般 情 况 直接加 -er ; -est all-taller-tallest以不发音 e 结尾的词 去 e 加 er ; -est nice-nicer-nicest以“辅音+y”结尾的词 变 y 为 i 再加-er ; -estdry-drier-driestheavy-heavier-heaviest重读闭音节结尾的词双写末尾辅音字母，再加-er ; -estthin-thinner-thinnest多音节和部分双

5、音节单词 在词前加 more ; mostmore deliciousmost deliciousbusy slim hot big thin fat wet beautiful interesting important dangerous expensive polite careful exciting bad/badly/ill little many/much old far 练习 2 填空1. Bob is _ ( young ) than Fred but _ (tall) than Fred. 2. Yingtian is not as _ (tall) as Yongxian

6、. 3. Almost all the students faces are the same but Li Deming looks _(fat) than before . 4.Which is _ (heavy), a hen or a chicken? 5. He is _ (bad) at learning maths. He is much _ (bad) at Chinese and he is the _ (bad) at English. 6. Annie says Sally is the _ (kind) person in the world. 7. An orange

7、 ia a little _ (big) than an apple, but much _ (small) than a watermelon.8. The Changjiang River is the _ (long) river in China.9. Sue is a little _ _ (beautiful) than her sister.10.My room is not as _ (big) as my brother s.11.-How difficult is physics? -I m not sure.- Is it _ (difficult) than maths

8、? - I don t think so.12.- Annie plays the piano very _ (well).- Sue plays it _ (well) than Annie. And Sally plays it the _(well).13. Saturday is my _ (busy) day in a week.练习 3：选择1. Which do you like _, tea or coffee?A. well B. better C. best D. most2.This work is _ for me than for you.A. difficult B

9、. most difficult C. much difficult D. more difficult3.Who jumped_of all?A. far B. farther C. farthest D. the most far4.Li Lei is_ student in our class.A. tall B. taller C. tallest D. the tallest5. Tom is one of _ boys in our class.A. tallest B. taller C. the tallest B. the tall6. English is one of_

10、spoken in the world.A. the important languages B. the most important languages C. most important language D. the most important language7. Which is_, Li Lei or Wu Tong?A. strong B. strongest C. stronger D. the strongest8.Jean works hard but she doesnt work _ Mary.A, as harder than B, as hard than C,

11、 as harder as D, as hard as9.This is _ book in our library.A, the most interesting B, most interesting C, the more interesting D, more interesting10.They got a Christmas tree and it was _ ours.A, so tall as B, so taller as C, as tall as D, as taller as11.A taxi doesnt run as _ as an underground trai

12、n.A, fast B, faster C, fastest D, more fast12.Yangpu Bridge is one of _ in the world.A, bigger bridge B, the biggest bridge C, the biggest bridges D, bigger bridges13.Her cousin can draw _ an artist.A, as well as B, not so well as C, as better as D, as good as14.Jinmao Tower is _ building in Shanghai.A, high B, tall C, highest D, the tallest15. This box is_ that one.A. heavy than B. so heavy than C. heavier as D. as heavy as16 I think the story is not so _ as that one.A. interesting B. interested C. more interesting D. most interesting