Modal Verbs Expressing Obligation

• Mum: Its raining a lot..

• You must take your umbrella

• You mastn't take your umbrella

• You have to take your umbrella

• You don't have to take your umbrella

Look at that sign...

• you don't have to park here.

• you have to park here.

• you mustn't park here.

• you must park here.

Look at the poster...

• He doesn't have to keep silence here

• He has to keep silence here

• He mustn't keep silence here

• He must keep silence here

Tomorrow is saturday...

• You have to go to school

• You don't have to go to school

• You mustn't go to school

• You must go to school

Language teacher says we need a reading book so...

• we have to buy a book

• we don't have to buy a book

• we must buy a book

• we mustn't buy a book

There is a rule in the class, if you want to speak...

• you have to put your hand up.

• you don't have to put your hand up

• you must put your hand up

• you mustn't put your hand up

There is an important rule about food in the school...

• you have to eat in class

• you don't have to eat in class

• you must eat in class

• you mustn't eat in class

When you are playing in the playground with your friends...

• you have to keep silence

• you don't have to keep silence

• you must keep silence

• you mustn't keep silence

You ______ tell me. I already know.

• mustn´t 
• must
• have to
• don`t have to 

The big boss will be at the meeting. You ______ be late

• mustn´t
• must
• have to
• don´t have to