Have to.../ Must....

Teachers must be kind.

Every classroom must have air conditioning.

Students must have a computer in every classroom.

Teachers must hit bad students.

Students must learn Computer every day.

The school must have P.E. every day.

The school must let us play basketball anytime.

The school has to finish at 2.50 p.m.

Students must play basketball every morning.

Teachers must teach us English songs every day.

Students must have a free period every day.

Mustn't....

Teachers mustn't hit students.

Teachers mustn't be angry with students.

Teachers mustn't use our students.

Teachers mustn't give a lot of homework.

Teachers mustn't scold students.

Teachers mustn't teach us every day.

Teachers mustn't ask students questions.

Students mustn't pay to learn.

Students mustn't wear socks and belts.

Students mustn't come to school before 8 o'clock.

Teachers mustn't be gruff.

Don't Have to/Needn't.......

Students needn't put on school or scout uniform.

Students needn't cut their hair every month.

Students needn't carry their bag to school.

Students needn't learn every day.

Students don't have to do aerobic exercises.

Students needn't do homework.

Students needn't eat lunch at school.

Students needn't go to the playground for assembly.

Students needn't 'wai' teachers.

Students needn't do hard homework.

Students needn't drink milk in the morning.

Can......

Students can wear a watch at school.

Students can go outside of the school at lunchtime.

Students can play games in the classroom.

Students can listen to the radio in the classroom.

Students can play in the playground until 6.30 p.m.

Students can play with the teachers.

Students can sleep in the classroom.

Students can come to school late.

Students can bring precious things to school.

Students can use the lift at school.

Students can bring food to eat from home.