Ways to Use Can and Could

‘Can’ and ‘could’ are modal verbs used in a few different ways.


Use ‘can’ to talk about:


Ability:

I can swim well.


Possibility:

When mum gets back from shopping we can go out.


Opportunity:

I am not working today so we can go to the beach.


Permission:

You can park here.


Use ‘could’ to talk about:

Possibility in the past:

Last year, we could go on holiday wherever we wanted.


Uncertain possibility in the future:

She could fail her exam unless she studies more.


Use either ‘can’ or ‘could’ to ASK permission. ‘Could’ is more polite and formal:


Can I have another cup of coffee?


Could I borrow your car?


However, to GIVE permission use ‘can’ or ‘cannot’.


You can go out now.


You can’t borrow my car.


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