Modal verbs of obligation, prohibition and advice

Which verbs express obligation or necessity?

(Three correct answers!)

• have to

• should

• must

• need to

Which verbs do we use to say that there is no obligation or necessity?

(Three answers are correct!)

• mustn't

• don't have to

• don't need to

• needn't

Which verbs do we use to say that something is prohibited /forbidden?

(Two answers are correct.)

• have to

• mustn't

• not allowed to

• don't have to

Which verbs do we use to give advice or recommendation?

(Three answers are correct.)

• ought to

• had better/'d better

• should

• have to

1. You ............. forget to lock the door when you go out.

• can't

• mustn't

• don't have to

• are allowed to

1. We don’t have any bread. I ........... go to the supermarket and get some.

• have to

• mustn't

• am allowed

• don't have to

1. You ............. say that. It’s rude.

• don't have to

• shouldn't

• don't need to

• ought to

We ............... switch our mobile phones off in the exam.

• must

• has to

• are allowed to

• can't

............... I use my laptop in the lesson? (asking for permission)

(Two answers are correct.)

• Do I have to

• Am I allowed to

• Can

• Must

You ............. cook. We can order a pizza.

(Two answers are correct).

• don't have to

• mustn't

• don't need to

• aren't allowed to