## Chapter 6.5: Modal verbs for obligation and permission

Can-do statement: I can express obligation and permission

Modal verbs for obligation and permission:

You use must, need to, have to and can to express obligation and permission.

When to use modal verbs for obligation and permission:
Necessary | Not Necessary | Permitted | Not Permitted
--- | --- | --- | ---
Have to/ Has to | Don't have to/ Doesn't have to | Can | Can't
Need to/ Needs to | Don't need to/ Doesn't need to/ Needn't |  | Mustn't
Must |  |  |

Note:

You usually use have to (not must) and can't (not musn't) to talk about rules or arrangements:

EXAMPLE: I have to (NOT must) work long hours. BUT:

I must (NOT have to) remember to shave.

6.5 Kennisclip https://www.youtube.com/watch?v=fXJ87wO484E