This document discusses the use of can, could, and be able to in different tenses in English grammar. It explains that can and could express ability, with could being the past tense of can. For all tenses other than the past, the expression "be able to" should be used instead of can. Examples are provided for using these terms in the present, past, future, and present perfect tenses. Finally, readers are given a short quiz to test their understanding of when to use can/could versus be able to.

1. Chapter 5
It’s a deal
Grammar
Stepping Stones 3gt

2. Can, could en to be able to
Can en to be able to betekenen ‘kunnen’.
• I can sing very well.
• She can’t play tennis very well.
• We are able to go out to dinner.
• They aren’t able to tell us what’s wrong.
De verleden tijd van can is could.
• I could sing very well when I was young.
• She couldn’t play tennis yesterday.

3. Can kun je alleen in de verleden tijd zetten (could). Voor
alle andere tijden behalve de verleden tijd gebruik je dus
een vorm van to be able to:
• toekomende tijd: They will be able to pay us back.
• present perfect: I haven’t been able to repair my bike.

4. Now show what you know!
(kies het juiste antwoord)
1. I have other plans, so I won’t be able to / will be able to
come to the party.
2. Why can’t / couldn’t he help us yesterday?
3. They aren’t able to / are able to drive. They both have
driver’s licenses.
4. I can / am not able to walk 30 kilometres. It’s just way too
far!
5. We haven’t been able to / can talk to her, because she
never answers the phone.
6. Of course you can’t / are able to quit smoking! You just
have to try harder.