2. 用why
not, why don’t you, perhaps表示建议。
e.g. 1) 你为什么不去电影院？
go to the cinema?
go to the cinema?
2) 你最好呆在家里，休息一会儿。
You and have a rest.
3) 晚上你最好不要独自一人外出。
You alone at night.
4) 看电影的时候，你必须保持安静。
You
keep quiet while watching the film.
5) 12岁以下孩子不必买票。
Children under
12 buy
tickets.
6) 你必须买票进博物馆。
You buy
tickets to go into the museum.
9A Unit 6 Detective stories