Can and can't

Or when talking about possibilities or abilities.

• I can't go to school tomorrow.

• I can speak japanese.

It can be use when asking permission.

• Can I be your friend?

• Can't you stay silent?

Can or can't

Why can't?

Can't is the contraction of can not. That means is an abreviation.

But there is another way of saying can't. In britain, the say cannot, that sounds just the same as can not, and it's easier to distinguish from can.

- I cannot write chinese, I can write korean.
- I can't write chinese, I can write korean.

I can...
They cannot...
We can't

For possibilities and abilities

Can she...?
​Can't we...?
Can they...?
Can't he...?

To ask for permission