八年级上册Unit 3 形容词或副词的同级比较级的用法.ppt

1、讲解：熊殿宏,形容词和副词同级比较的构成,芦淞区贺家土中学,大多数形容词和副词有三个等级：,原级,比较级,最高级,同级比较,一、表示两者在某一方面相同的是， 用“as +形容词或副词原形+as”的句型。,定义,1. 如果是be动词或系动词，我们就用“A+be/系动词+as+形容词原形+as+B” 如： 我认为科学和数学一样重要。 I think science is as important as math. 比尔和他爸爸一样滑稽。 Bill is as funny as his father. as as之间，接的是形容词原形。,一、表示两者在某一方面相同的是， 用“as +形容词或副词原形

2、+as”的句型。,定义,2. 如果谓语是实意动词，我们就用“A+实意动词+as+副词原形+as+B” 如： 汤姆跑得跟杰克一样快。 Tom runs as fast as Jack. 露丝唱得跟玛丽一样好。 Lucy sings as well as Mary. as as之间，接的是副词原形。,二、一方在某一方面不及另一方时，用用：“not as/so +形容词或副词原形+as”的句型。表示前者不如后者。,定义,“A+be/系动词+not as/so+形容词原形 +as+B”如： 我没有过去那么忙了。 I am not as/so busy as I used to be. 今天没有昨天那么

3、冷了。 Its not as/so cold today as yesterday.,二、一方在某一方面不及另一方时，用用：“not as/so +形容词或副词原形+as”的句型。表示前者不如后者。,定义,2. “A+助动词/情态动词+not+实意动词原形+as/so+副词原形+as+B” 如： 他没有来的王林早。 He did not (didnt ) come as/so early as Wang Lin. 他不应该跑得比昨天慢啊！ He should not (shouldnt ) run as/so slowly as yesterday.,9/1/2020,as as还有一些常用词

4、组，一起来学习,和一样 ： as good/well as 一就 : as soon as 和差不多 : as much/many as 就而言 : as far as 只要 : as long as 尽可能 : as as possible/one can,9/1/2020,一） 根据句意，改成相应的同级比较句。 1. You are happy. Mary is happy, too. Mary is _ _ _ you. 2. Peter is 175cm. John is 175cm , too. John is _ _ _ Peter. 3. He runs 12 circles i

5、n 5 minutes. Tom runs 12 circles in 5 minutes too. Tom runs _ _ _ he. 4. This story is interesting, but that story is not interesting . That story is _ _ _ _ this story.,小试牛刀,as happy as,as tall as,as fast as,not as interesting as,9/1/2020,二）根据中文，补全句子 1. 这条裙子跟那条裙子一样漂亮。 This dress is _ _ _ that dress. 2. 这个故事不如那个故事有趣。 This story is _ _ _ _ that story. 3. 琳达跳舞跳得跟莉莉一样好。 Linda dances _ _ _ Lily. 4. 我每天没有刘莉来得早。 I dont come _ _