The document discusses different uses of the word "can" including ability, possibility, permission, and requests. It provides examples of sentences using "can" to indicate ability such as being able to ride a bike or inability such as not being able to cook. It also gives examples of using "can" to show possibility and permission as well as requests using "can" and "may".

1. I can ride a bike
I know how.
(Ability)

2. She can’t cook.
She doesn’t know
how.
(Ability)

3. I can give you a
ride.
It is possible for me.
(Possibility)

4. I can’t call you
right now.
It isn’t possible for me.
(Possibility)

5. You can use
your phone
dictionary.
It’s permitted.
(Permission)

6. You can’t eat in
the classroom.
It isn’t permitted.
(Permission)

7. Can you turn on
the projector,
please?
Please do it.
(Request)

8. Can I have your
book?
Is it OK if I do it?
(Permission)

9. 1. She doesn't want to go to the swimming
pool because she ___ swim.
2. You ____ use your phone in a bank.
3. ____ I call you later?
4. She ____ come tomorrow, she has an
important appointment.
5. ____ you sign here, please?