A: Is your school clean, Paul?
B: Yes. 1.
A: My school is dirty. 2.
B: You should keep your classroom and school clean.
A: 3.
B: You can clean your desk and chair.
A: My desk and chair are clean. 4.
B: You can put your rubbish in the bin. 5.
A: OK.
B: Yes. 1.
D
What about your school? A: My school is dirty. 2.
B
B: You should keep your classroom and school clean.
A: 3.
A
B: You can clean your desk and chair.
A: My desk and chair are clean. 4.
E
B: You can put your rubbish in the bin. 5.
C
A: OK.
答案：1. D 2. B 3. A 4. E 5. C
六、按要求写句子。
1. The river was dirty.(改为一般疑问句,并作肯定回答)
2. Rubbish made our city dirty.(对画线部分提问)
3. We can plant more trees to keep the air clean.(对画线部分提问)
4. We can put rubbish here.(改为否定句)
1. The river was dirty.(改为一般疑问句,并作肯定回答)
Was the river dirty? Yes, it was.
2. Rubbish made our city dirty.(对画线部分提问)
What made your city dirty?
3. We can plant more trees to keep the air clean.(对画线部分提问)
What can you do to keep the air clean?
4. We can put rubbish here.(改为否定句)
We can't put rubbish here.
答案：1. Was the river dirty? Yes, it was. 2. What made your city dirty? 3. What can you do to keep the air clean? 4. We can't put rubbish here.
一、听录音,选出你所听到的句子。(听一遍)
(
B. Smoke from factories made the air dirty.
(
B. We can sweep the floor.
(
B. The fish are dead.
(
B. Two little black birds are flying on the hill.
(
B. Do you throw rubbish on the floor?
(
B
) 1. A. Smoke from cars made the air dirty. B. Smoke from factories made the air dirty.
(
B
) 2. A. We can't sweep the floor. B. We can sweep the floor.
(
B
) 3. A. The fish is dead. B. The fish are dead.
(
B
) 4. A. Two little black birds are sitting on the hill. B. Two little black birds are flying on the hill.
(
A
) 5. A. Can you throw rubbish on the floor? B. Do you throw rubbish on the floor?
答案：1. B 2. B 3. B 4. B 5. A