Must / Have To - Mustn't / Don't Have to
Listed below are examples and uses of must / have to / mustn't / not have to
| Examples | Usage |
|
We have to get up early. |
Use 'have to' in the past, present and future to express responsibility or necessity. NOTE: 'have to' is conjugated as a regular verb and therefore requires an auxillary verb in the question form or negative. |
|
I must finish this work before I leave. |
Use 'must' to express something that you or a person feels is necessary. This form is used only in the present and future. |
|
You don't have to arrive before 8. |
The negative form of 'have to' expresses the idea that something is not required. It is however, possible if so desired. |
|
She mustn't use such horrible language. |
The negative form of 'must' expresses the idea that something is prohibitied - this form is very different in meaning than the negative of 'have to'! |
|
Did he have to leave so early? He had to stay overnight in Dallas. |
IMPORTANT: The past form of 'have to' and 'must' is 'had to'. Must does not exist in the past. |
Must / Have To - Mustn't / Not Have To Quiz
Use either 'must','have to', 'mustn't or 'not have to' for the following quesitons.
