Must and Have to

We use HAVE TO for...

• personal obligations

• general obligations

• ideas

• thoughts

We use MUST for...

• general obligations

• thoughts

• ideas

• personal obligations

People ________ obey the law.

• mustn't

• have to

• don't have

• must

John __________ work harder.

• must

• mustn't

• have to

• doesn't have to

My parents ____________ watch their diet.

• have to

• must

• has to

• have must

Doctors _____________ help people.

• has to

• have to

• must

• mustn't

Pupils in England ______________ wear uniforms.

• has to

• must

• don't must

• have to

I _____________ clean my room, it's very messy.

• must

• mustn't

• has to

• have to

My dad ___________ stop smoking; it's not healthy.

• have to

• haven't to

• must

• mustn't

You must do your homework if you want good grades.(multiple answers!)

• yes

• yes

• yes

• no