Mustn’t & Don’t have to

Look :

Remember that must and have to have the same meaning

However , mustn’t and don’t have to have different meanings.

We use mustn’t + verb for something very important or necessary NOT to do.

*You mustn’t use a mobile phone

in the classroom .

We use not have to + verb for something that is not necessary

*You don’t have to call me , I’ll call you.

Choose:

don’t have to

We………………………….……...do our homework tonight. we can do it

tomorrow .

Next:

mustn’t

don’t have to

You………………………………………..leave your phone there . Someone might take it.

Next:

mustn’t

YOU ……………………………………touch the ball with your hands when you are playing .

don’t have to mustn’t

Next:

We……………………………..play tennis if you don't want to.

don’t have to mustn’t

Next:

We …………………………………water the garden . It rained yesterday.

mustn’t don’t have to

Next:

You…………………………….play with fire . You will get burnt.

mustn’t don’t have to

Next:

EXCELLENT