Can /can’t
ABILITY
PERMISSION

Expressing ability
We use the modal verb “Can” to express that we
know how to do something.
The negative form is “can’t” or “cannot” (more
formal).
“Can” and “can’t” are always followed by a verb in
the infinitive.

Read the following sentences aloud.

My brother can play the piano.

Michael Phelps can swim very well.

The girl can ride a bike.

The babies can’t read.

He can’t run 10 km.

Can dogs speak?
 No, they can’t.

Can cats climb trees?
 Yes, they can.

Can you speak English?
we
 Yes, you can.
I

Expressing permission
 We also use can /can’t to ask for
and give permission.

Can I go to the toilet, please?

Yes, you can.

Can I speak to Homer Simpson, please?

No, you can’t. He’s sleeping at the moment.

Requests
And we use “can” to ask
somebody to do something!
Can you …….., please?

Can you close the door, please?

Can you turn on the lights, please?

Can you pass me some water, please?