6. ---I wasn't sure whether…. 7. ---I wonder if ….

1. ---How much does… cost …? 2. ---It can cost as little as … yuan and as much as … yuan. 3. ---It costs …. 4. ---It's worth …. 5. ---I don't agree with ….

5. be angry with sb.

III. 交际用语

4. be pleased with sth./sb.

3. regard... as...

2. prefer to do sth.

1. be busy doing sth.

22. not…any longer

II. 重要句型

21. no one，

20. before long，