3. Shall　I　close　the　door?　Yes,　of　course.

2. Can　we　go　to　the　party?　回答　Yes,　you　can　./No,　you　can’t.

1. May　I　use　your　rubber?　Yes,　you　may.　/No,　you　may　not.

3.掌握why not? /why don’t you? /perhaps 表示提建议时的用法。

2.掌握should/ought to/must/have to/had better表示提建议时的用法。

1.掌握过去完成时的用法。(常与before, when, by等词连用)

18. She is experienced in acting.她在表演方面很有经验。

17. ★They have a bad effect on people, especially teenagers.

16. The film is about a rich woman (who falls in love with a man), but is killed by the man in a boat.

15. A woman falls in love with a man but is finally killed by the man in a boat.