Grammar
Teaching aims:
1. To learn how to form comparative and superlative adjectives.
2. To learn how to use comparative and superlative adjectives.
Step 1 Presentation
Present some new words: bad — worse — worst, height, weight, competition.
Then read aloud all the new words.
Step 2 Lead-in
Show some pictures to talk about height. Lead in the comparative and superlative adjectives: tall, taller and tallest, interesting, more interesting and most
interesting
Step 3 Grammar
1. Teach how to form comparative and superlative adjectives. Then complete A
on Page 12.
2. Teach how to use comparative and superlative adjectives. Then complete B. Step 4 Summary
一、英语中形容词通常有三种等级——原级、比较级和最高级，用来描述人或事物在某个方面的不同程度。

其中比较级的构成分为规则变化（分为长词变化规则和短词变化规则两类）以及不规则变化。

如：long —longer —longest, important —more important —most important，many/much—more —most。

二、当把两个人或事物作比较时要用比较级，即：两者之间用比较级。

如：Who is more generous, Kitty or Sandy?
三个及以上的人或事物之间进行比较时要用最高级，即三者及以上用最高级。

如：Whose drawing is the most beautiful, Millie’s, Sandy’s or Amy’s?
三、比较级常和than连用，最高级常和三者及以上的范围连用，如: in her class, of the three, of all, among the six students，in China等等。

Step 5 Exercise
一、单项选择：
1. Which is _______, the sun, the moon or the earth?
A. big
B. bigger C．biggest D. the biggest
2. She is _______ swimmer among them.
A. good
B. best
C. better
D. the best
3. Her drawing is _____ than the other three.
A. beautiful
B. more beautiful
C. the most beautiful
D. the more beautiful
4. Whose bike is ______, his or hers?
A. new
B. newwer
C. the newest
D. newer
二、翻译句子：
1. 这台电脑比那台贵。

This computer is ___________________ that one.
2. 这三个盒子哪一个最重？
Which box is __________________________?
3. 今天比昨天热吗？
Is today ____________ yesterday?
4. 在这些学生中，Sandy数学最好。

Sandy is __________________________________.
5. 第一道数学题比第二道难得多。

The first maths problem is much ______________________ the second one. Step 6 Homework
1. Remember the use of comparatives and superlatives of the adjectives.
2. Preview the new words in the next lesson.。