初中英语比较级和最高级讲解与练习形容词比较级和最高级一．绝大多数形容词有三种形式,原级,比较级和最高级, 以表示形容词说明的性质在程度上的不同。
1. 形容词的原级: 形容词的原级形式就是词典中出现的形容词的原形。
例如: poor tallgreat glad bad2. 形容词的比较级和最高级: 形容词的比较级和最高级形式是在形容词的原级形式的基础上变化的。
分为规则变化和不规则变化。
二．形容词比较级和最高级规则变化如下:1) 单音节形容词的比较级和最高级形式是在词尾加-er 和-est 构成。
great (原级) greater(比较级) greatest(最高级)2) 以-e 结尾的单音节形容词的比较级和最高级是在词尾加-r 和-st 构成。
wide (原级) wider (比较级) widest (最高级)3) 少数以-y, -er, -ow, -ble结尾的双音节形容词的比较级和最高级是在词尾加-er 和-est构成。
clever(原级) cleverer(比较级) cleverest(最高级)，slow(原级) slower(比较级) slowest (最高级)4) 以-y 结尾,但-y 前是辅音字母的形容词的比较级和最高级是把-y 去掉,加上-ier和-est 构成.happy (原形) happier (比较级) happiest (最高级)5) 以一个辅音字母结尾其前面的元音字母发短元音的形容词的比较级和最高级是双写该辅音字母然后再加-er和-est。
原形比较级最高级原形比较级最高级big bigger biggest hot hotter hottestred redder reddest thin thinner thinnest6) 双音节和多音节形容词的比较级和最高级需用more 和most 加在形容词前面来构成。
原形比较级最高级careful careful more careful most carefuldifficult more difficult most difficultdelicious more delicious most delicious7)常用的不规则变化的形容词的比较级和最高级:原级比较级最高级good better best 好的well better best 身体好的bad worse worst 坏的ill worse worst 病的many more most 许多much more most 许多few less least 少数几个little less least 少数一点儿（little littler littlest 小的）far further furthest 远（指更进一步，深度。
亦可指更远）far farther farthest 远（指更远，路程）old older oldest 年老的（指年纪）old elder eldest 年老的（指兄弟姐妹的排行形容词前如加less 和least 则表示"较不"和"最不"important 重要less important 较不重要least important 最不重要三．形容词各等级的用法：1、原级（同级）比较：as…as…; not as(so)…as…We’ll giv e you as much help as we can.She isn’t as(so)active in sports as before.2. 形容词比较级的用法:形容词的比较级用于两个人或事物的比较,其结构形式如下:主语+谓语(系动词)+ 形容词比较级+than+ 对比成分。
也就是, 含有形容词比较级的主句+than+从句。
注意从句常常省去意义上和主句相同的部分, 而只剩下对比的成分。
1）Our teacher is we are. 我们老师的个子比我们的高。
2）It is today than it was yesterday. 今天的天气比昨天暖和。
3）This picture is than that one. 这张照片比那张照片漂亮。
4）This meeting is than that one. 这次会议不如那次会议重要。
5）The sun is than the moon. 太阳比月亮大得多。
3. 形容词最高级的用法:形容词最高级用于两个以上的人和物进行比较, 其结构形式为:主语+谓语(系动词)+the+形容词最高级+名词+表示范围的短语或从句。
1）She is the best student her class. 她是班上最好的学生。
2）Shanghai is the biggest one of cities China. 上海是中国最大城市之一。
3）This apple is the biggest I have ever met. 这是我见到的最大的苹果。
4）Tom is the tallest boy in his basketball team. 汤姆是他们篮球队中个子最高的孩子。
形容词比较级最高级练习题写出下列单词的反义词一、写出下列形容词的比较级和最高级1. old __________ _____________2. busy __________ _____________3. thin ___________ ___________4. many __________ _____________5. slow __________ _____________6. delicious __________ _____________7. hot __________ _____________ 8.new __________ _____________9. clean __________ _____________ 10. high __________ _____________11. heavy __________ _____________ 12.cold __________ _____________13.bad __________ _____________ 14.red __________ _____________15. thin ________ ______________ 16. fat __________ _____________二、用适当形式填空：1. Bob is _________ ( young ) than Fred but __________ (tall) than Fred.2. Yingtian is not as ___________ (tall) asYongxian.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.-- How _________ (tall) is Sally?-- She' s 1.55 metres ________ (tall). What about Xiaoling?-- She' s only 1.40 metres ______ (tall). She is much _______(short) than Sally. She is also the _______ (short)girl in theclass.6. He is ______ (bad) at learning maths. He is much _______ (bad) at Chinese and he is the _________ (bad) at English.7. Annie says Sally is the ________ (kind) person in the world.8.He is one of the_________(friendly) people in the class, I think.9. A dictionary is much _________ (expensive) than a story-book.10. An orange ia a little ______ (big) than an apple, but much ________ (small) than awatermelon.11.Miss Chen is __________ _________than Mr. Wang. (popular)12. Mr. Lin ________ ________ _________ Mr. Brown. (sad)13. The basketball _______ ________ ________ the baseball. (big)14. Question A _______ ________ _________ ________ Question B. (important)15. A rose ________ ________ __________ ________ a weed(野草). (beautiful)16. Toronto is _____ ______ city in Canada. (large)17. Playing computer games is______ _____ _____ of all the activities.(interesting).18. The Nile(尼羅河) is ______ ________river in the world. (long)19. Good health is _______ _______ ________thing life. (important)20. Taking a taxi is ______ _______ way to get to the airport. (easy)21. Test 1 is _____ _______ _________of all the tests. （difficult）22. He is ________than any other boy in the class.（clever）23. She is_______ than all the other students. (young)24. The window is ________ ________ of the two. (narrow)25. Where is the ________bus-stop? (near)26. He is one of ________ ________ _______Politicians. (famous)27. Tom drives much ________ ________than John. (careful)28.The white flower is ________(beautiful). The yellow flower is ______ _______ (beautiful)thanthe white flower. The red flower is the _____ ______ of the three.四、选择题1. She is ________than ______ . A. busier / us B. busier / we C. more busy / us D. more busy / we2. Jane is ________ than Betty. A. less taller B. less tallest C. less tall D. not as tall3. China is ________ country in the world.A. the third largestB. the largest thirdC. the third largeD. a third largest4. -Which is ____ season in Beijing?-I think it's autumn.A.goodB.betterC.bestD.the best5．- Which is__________ , the sun, the moon or the earth?-- Of course, the moon is.A.smallB.smallerC.smallestD.the smallest6. The air in Beijing is getting much _____ now than a few years ago.A. cleanB. cleanerC. cleanestD. the cleanest7. Mobile phones are very popular now and they are _____ than before.A. cheapB. cheaperC. cheapestD. the cheapest8．I study English as_______as my brother. A.hard B. harder C. hardest9. Which is _____ , a bicycle or a computer?A. expensiveB.more expensiveC.the most expensive10. The Yellow River is one of ______rivers in China. A long B longer C the longest11.She is the second _______student in our class. A. tall B. taller C. tallest。