约3100字。

　　Unit 3 《The Media》学案
　　【本讲教育信息】
　　一. 教学内容：
　　Boonit 3 (I)  
　　使用形容词，副词的比较级和最高级句型描述、比较不同事物的特征。
　　二. 本周教学重点：
　　1. 形容词，副词的比较级和最高级。
　　2. 重点词汇和词组。
　　三. 具体内容：
　　（一）形容词，副词比较级和最高级的构成。
　　（二）比较级用法：
　　1. 同级比较时（a=b），用“as +形容词，副词原级+as”，表示……和……一样
　　This newspaper is as expensive as that one.
　　Today is as cold as yesterday.
　　They have as many things to do as we do.
　　2. 如果a=b,用not as/so …as , 表示。。。不及。。。。
　　Your bag is not as/so big as his.
　　There is not as/so much rain this year as last year.
　　It is not as/so cold in Nanjing as in Beijing.
　　3. 两个人或事物进行比较，a>b 或a<b,用形容词，副词的比较级+than ，表示……比……更……
　　The earth is bigger than the moon.
　　I think listening to songs is more exciting than reading.
　　There are more houses in this area than in that one.
　　4. 在形容词，副词的比较级前，可加某些程度副词或词组uch, far, a lot, a great deal, even, still, a little, a bit等。
　　I can believe your son is even taller than you.
　　He is much younger than I.
　　5. 双重比较
　　（1）比较级+and+比较级，表示越来越。。。
　　The weather is getting warmer and warmer.
　　I believe our country will become stronger and stronger.
　　（2）the+比较级……，the +比较级……表示越……就越……
　　The more you read and listen to English, the fewer you make mistakes.
　　The harder you work , the better you get.
　　6. 表示倍数，百分数和分数的比较级与程度副词一样，要把倍数，百分数和分数放到比较级前。