tenses : modal verbs : can

With the modal verb can you can inform us what you or other people

can or are able to do every day,
could or were able to do yesterday,
have been able to do up to now,
had been able to do before you could do something else,
will be able to do tomorrow,
could do or would be able to do (possible),
could have done or would have been able to do (impossible).

Try out the following activities.