A）读一读，判断下列单词有几个音节，按要求归类。
master volleyball grade student festival reading
slim over cute usually age activity
单音节词
双音节词
多音节词

单音节词: grade, slim, cute, age
双音节词: master, student, reading, over
多音节词: volleyball, festival, usually, activity

B) 用所给单词的适当形式填空。
1. Which is (big), the Sun or the Earth?
2. Beijing is getting (beautiful) than a few years ago.
3. My sister is two years (old) than I am.
4. June's parents have four daughters, and she is the (young) child.
5. The short one is (expensive) than the long one.
6. The boy is the (interesting) one of the three.
7. The boy is very fat. He can't jump (farther).
8. I'm very hungry. I eat (quick).

1. bigger 2. more beautiful 3. older 4. youngest 5. more/less expensive 6. most interesting
7. far 8. quickly

() 1. Mary is a girl. She always leaves things here and there.

A.careful
B.careless
C.carefully
D.carelessly

1. B

（）2. Look at the bird.

A.beauty
B.beautiful
C.beautifullly
D.lowe

2. B

() 3. The price of the bicycle is very . I can't afford(买得起) it.

A.expensive
B.cheap
C.high
D.low

3. C

() 4. I had to call a taxi because the box was than I'd expected.

A.heavy
B.heavier
C.the heavier
D.the heaviest

4. B

() 5. He feels today than yesterday.

A.tired
B.more tired
C.more tireder
D.much tired

5. B