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1、talltallertallestThe little boy is The little boy is talltall. PCJ is . PCJ is tallertaller than than him. YM is the him. YM is the tallesttallest of them. of them.形容词副词的比较级,最高级原级原级（positive degree)比较级比较级 ( comparative degree) 3. 最高级最高级 (superlative degree)一.规则变化1.一般直接加 -er/-est; eg. tall long 2.以不发
2、音的e结尾时加-r/-est; eg. late large3.以“辅音字母+y”结尾的双音节词,变y为i加-r/-est; eg. easy happy4.以“辅元辅”结尾的词，双写末尾辅音 加-r/-est; eg. fat thin5. 以er结尾，直接加 -er/-est; eg. clever6.多音节词和部分双音节词词前加 more/most. eg. careful beautifulWrite out the Comparative Degrees（比较级）and the Superlative Degrees（最高级）of these words. big nice thin
3、 easy cheap late thirsty safe young light carefully clever heavy early happy easily beautiful interesting 二二.不规则变化不规则变化原级： 1.表示两者相等时 A+be+as+原级+as+B eg.The coat is as beautiful as that one. 2.表示两者不相等时 A+be+not+as/so+原级+as+B eg.The pig is not so heavy as the horse.Usages注意: 3.强调倍数时用（A是B的几倍） A+be+倍数+a
4、s+原级+as+B eg. The classroom is twice as big as the office. The house is three times as large as the kitchen. 比较级用法：1. A+be+比较级+than+B 表示A比B. eg.The man is taller than that woman.2.比较级+and+比较级 表示“越来越.”,多音节词可用“more and more. eg. fatter and fatter taller and taller3.the+比较级，the+比较级 表示越.就越. eg. The soon
5、er,the better. The more ,the better.4.当有表示程度的副词 a little ,a bit , a lot ,much, even, still, far ,rather, any 等修饰形容词时,该形容词用比较级. eg.Japan is a little larger than Germany. 5.两者比较用比较级，带有than的用比较级； eg.Who is younger,Tom or John ? This story is more interesting than that one.6.the+比较级+of the two 表示“两者中比较.
6、的一个 eg.The girl is the taller of the two.最高级：1.三者或三者以上用最高级，带有of.或in.短语的句子用最高级 eg.He is the tallest student in his class.2.one of the +最高级+名词复数，表示最.之一 eg.Shanghai is one of the most beautiful cities in China.3.形容词最高级前一般用定冠词the，但形容词最高级前有物主代词时，则不用定冠词 eg. Today is my happiest day. Changjiang is the long
7、est river in China.Complete the sentences with the right forms of the words.n Jim is very _. Li Lei is _ than Jim. (hungry)n Kates mooncakes are _ of all. (nice)n Your box is _ than mine. But his is _ of the three.n Unit 2 is quite _. Unit 3 is _than Unit 2. Its _in Module 1.n This TV play is _ than
8、 that one.(good)n My mother is very _. She is _in my family. (busy)n Lingling gets to school _than the others. (early)n She speaks English _in our class. (well)n Lucy jumped quite _.(far)n I think English is as _as Chinese. (important)n This picture is _ of the four. (beautiful)n Lucy did _ than Lil
9、y.(bad)选择题:1.-Tom is good at drawing. How about Mike? -Mike is _,I think. He has got more prizes than Tom. A.good B.worse C.better 2.-How far is it to the airport? 20 kilometers? -No, its _. About 30 kilometers. A.farther B.the farther C.the farthest 3. Now telephones are very popular and they are much _than before. A.cheap B.cheaper C.cheapest 4.-Bob,how are you feeling today? -Much _.I dont want to eat anything. A. better B.worse C.healthier