B2.1 L17 - Modals of Obligation and Prohibition

Front

What is the modal verb used to express lack of necessity in the present?

Back

don't have to

Front

What is the modal verb used to express lack of necessity in the past?

Back

didn't need to

Front

What modal verb indicates a strong obligation or necessity?

Back

have to

Front

What modal verb is used to indicate prohibition?

Back

mustn't

Front

In what context would you use 'don't need to'?

Back

When something is not necessary.

Front

What does 'had to' imply about a past obligation?

Back

It indicates that there was a necessity to do something in the past.

Front

What is the difference between 'must' and 'have to'?

Back

'Must' is often used for personal obligation, while 'have to' is used for external obligation.

Front

Provide an example of a sentence using 'mustn't'.

Back

You mustn't smoke in the hospital.

Front

What does 'doesn't have to' imply about a future action?

Back

It indicates that there is no obligation to perform the action.

Front

How do you express a lack of necessity in a negative form?

Back

Using 'don't have to' or 'doesn't have to'.