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1、（一）形容词、副词比较级和最高级的构成：1. 单音节词和少数双音节词比较级和最高级的规则变化：规则原级比较级最高级在词尾直接加-er/esttalltallertallest词尾是e，只加-r/stnicenicernicest以辅音字母加y结尾的，把y变i再加-er/esthappyhappierhappiest重读闭音节，末尾只有一个辅音字母，双写这个辅音字母，再加-er/estthinthinnerthinnest2. 其他双音节词或多音节词,在该词前面加-more/mostbeautifulmore beautiful(the) most beautiful3. 由形容词加ly构成的双
2、音节词和多音节词,都是在该词前加-more/most.quicklymore quickly(the) most quickly 4. 不规则变化:good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthest/furthest（二）形容词副词原级比较级和最高级的用法：1. 原级的用法：用于两者之间对比，意思为“和相同”A+动词.+as.+形容词副词原级+as B 否：A +动词+not as/so+形容词副词原级+asB（不如）例句：Tom is as hones
3、t as Jack. He is not as/so clever as I/me.2. 比较级的用法:1）A+形容词副词比较级+than+ B 例句： Susan is happier than Jane. 形容词副词比较级前还可以用much, even, still, a little，far, a lot, a bit, much more来修饰。2）数字+形容词副词比较级+than 例句：You are two years older thanI/me. 3）比较级+and+比较级，表示“越来越”The earth is getting warmer and warmer. China
4、 becomes more and more stronger4）the +比较级，the +比较级结构，表示“越就越”The more I study it, the more I like it. 短语the more, the better(越多越好)5）which/who +is +比较级 例句：Which city is bigger, Beijing or Tianjin? 6）副词比较级+than。当前后使用的动词相同时，通常用助动词来代替后面的动词，该动词或助动词可以省略。Lily run faster than Mary(did).3. 最高级用法：用于三者及以上的人或事物的
5、比较,最高级前加the，最高级前有物主代词，序数词和名词所有格时，不加定冠词，后面跟带in或of表范围的短语。1）one of the +最高级 例句:Shanghai is one of the most beautiful cities in China.Our city is one of the safest cities in the world. They are our nearest neighbours in space.2）最高级意义的表达方法:等级例句最高级She is the best in her class. 比较级She is better than any ot
6、her student in her class.No other student in her class is better than she.原级No other student in her class is as good as she.3）副词最高级前一般有the，也可省略。He works (the) hardest of all the students in the class.专项训练I.单选1. The air in Beijing is getting much now than a few years ago. A. clean B. cleaner C. clean
7、est D. the cleanest2. Nowadays science fiction isnt as as cartoons among teenagers. A. popular B. more popular C. less popular D. the most popular3. We are glad to see that Shanghai is developing these years than ever before. A. quickly B. less quickly C. more quickly D. the most quickly5. The chees
8、e cake tasted so that the kids asked for more. A. delicious B. well C. bad D. badly6. She looks very . I think she needs to have a rest. A. tired B. hard C. well D. hardly8. The population of Tianjin is than that of Shanghai. A. larger B. less C. smaller D. fewer11. Guo Yue did quite at the World Ta
9、ble Tennis Championship, but Zhang Yining did even . A. better, well B. well, well C. well, better D. better, better12. Tom is six and he is his sister Jane. How old is Jane?Three. A. twice as old as B. two years older than C. three years younger than D. as old as13. Remember, boys and girls. you wo
10、rk, result you will get.We know, Miss Gao.A. The better, the harder B. The harder, the better C. The hard, the better D. The harder, the good14. Jack has three friends. Mike is the of the four. A. most cleverest B. more clever C. cleverest D. clever15. In our English study reading is more important
11、than speaking. I think. I dont agree, speaking is than reading.A. as important as B. so important as C. the most important D. the same asII.用of, than, in, as填空。1. This table is as big that one. 2. The yellow book is bigger the blue one.3. Tom is the best student the class. 4. This lesson is more interesting that one.5.This apple is the largest all the apples.6.The Yangtze river is the second longest river _China.2
