Have to and Should

Modal verbs: Must - Have to - Should - Ought to

Grade 11

Should + V = Ought to + V

Ex: You should get up earlier. = You ought to get up earlier.

Shouldn't = Ought not to

Ex: You shouldn't stay up late. = You ought not to stay up late.

Multiple Choice

I think you __________ talk to your parents about it. I'm sure they will help you.

• should

• shouldn't

• not ought to

• ought

Must - Have to

Express obligation or the need to do sth

Ex: You must show respect to the old.

You have to clean the floor before going out.

Must

Obligation imposed by the speaker.

Ex: I must finish my homework before going to school.

Have to

Obligation by other people

Ex: You have to wear helmets when riding a motorbike.

You have to wear uniform at school.

Mustn't = Not allowed to do sth

Ex: You mustn't play with fire.

Not have to + V = No need to V

Ex: You don't have to cook today. We're eating out.

Fill in the Blank

You _________ finish your homework before you go out with your friends.

Fill in the Blank

At our school, we __________ wear uniforms. We can wear anything we like.

Fill in the Blank

You are not allowed to use phones during the test.

=> You mustn't _______________

Fill in the Blank

It is not necessary to write an essay.

=> You ________________ (have to)

Multiple Choice

It is a good idea to start revising for the exam a few weeks earlier. 

• You could
• You don't need to
• You ought to
• You can

Multiple Choice

If I were you I would go to the doctor. 

• You should
• You can
• You have to 
• You may

Multiple Choice

You needn't call her - she already knows the news. 

• don't have to
• shouldn't
• can't
• mustn't

Multiple Choice

It is forbidden to smoke in public places. 

• You can
• You must
• You mustn't
• You have to 

Multiple Choice

You ______ look at me when I am talking to you.

• must

• could

• should

• can't

Multiple Choice

You.... cheat when taking the test.

• Must

• Can

• May

• Must not

Multiple Choice

You ________ study hard if you want to pass the exam.

• Must

• Can

• Should

Multiple Choice

A: Where can I find James?

B: I think you ____ call him first. He's really busy right now.

• can

• ought to

• shouldn't

Multiple Choice

Mum ______ do the shopping. Dad has already done it.

• doesn't have to

• should

• couldn't

Multiple Choice

Remember, you're in a library. You _____ speak loudly.

• Mustn't

• Might

• Can