教学目标：
1、 学会形容词的原级和最高级。
2、 掌握形容词最高级在句子中的用法。
教学重点：
形容词最高级的变化和用法。
教学难点：
形容词最高级的变化规则。
教具准备：
图片、电脑、电视。
教学过程：
Step 1: Revision
1. Sing the song: Which is slower?
2. Use the picture and do some actions to review the words:
big, small, old, young, fast, slow, tall, short
3. 用两种物品比较：（复习比较级的用法）
T: Which…is bigger? S: … is bigger.
Step 2: New lesson
1. Ask three students to the front.
T: S1 is tall, S2 is taller than S1, but S3 is the tallest of the three boys.
Who is the tallest in the class? （ It’s … ）
以学生作为例子引出tallest, shortest, fastest, slowest, oldest, youngest… 并板书。
2. 让学生用图片等进行对话。
（1） Who is the …？
（2） Which is the …？
3. 让学生总结最高级的用法：--est ,在句子中形容词最高级前要用the
4. （1）、出示一些动物玩具：ant, bear, cat, dog…
T: The ant is the smallest animal. What is the smallest animal in your book?
S：The ant is the smallest animal.
T: What’s the biggest animal in the world?
S: The whale is the biggest.
（2）、让学生用这些动物玩具进行Pair work
（3）、用电脑课件出示Target。Listen to the tape and repeat.
5. Play the game: 利用Practice 2的表进行采访班里的同学。
Step 3: Do the exercises :
（1）、Finish Practice 1
（2）、写出下列单词的最高级或原形
short__________ thinnest__________
yount__________ tallest____________
slow___________ biggest____________
cheap__________ fastest____________
Step 4: Homework
（1）、Copy the words and the target.
（2）、Read the target.
板书设计：
Unit 9 The green fish is the biggest
Who is the tallest in the class? tall—tallest short—shortest
It’s … big—biggest small—smallest
What’s the biggest animal …？ old—oldest young—youngest
The whale is the biggest. fast—fastest slow—slowest