本单元的主要话题是“规章制度”，与此相关的写作任务以谈论学校的一些规章制度或家庭规定为主。主要要求我们学会运用祈使句来表达请求、命令、劝告等，要会正确使用情态动词can, must和 have to来谈论规章制度。
Don't arrive late for class. You must be on time Don't eat in the classroom. You must eat in the din ing hall.
Don't listen to music in class We have to be quiet in the librar I can't play basketball after school I must read a book before I can watch TV.
Dear Tom Thanks for your last email. You want to know the rules in our school. Now let me tell you about them We can't" arrive late for class. We must be on time. We can' t talk loudly in class. We have tokeep quiet in class. When we meet our teachers on our way, we should say hello to them. We cant eat in the classroom and we can't listen to music or play games in class I think we have too many rules. I feel terrible What about yours？ Please write and tell me.
Yours Li Ming