They give additional information about the function of the main verb that follows it.

It is a modal verb that expresses the ability to do something and it is also more polite than "can".

Fill in the blank.

It's very cold today. Do you think it____ rain today?

Mum says we____ watch TV after we've finished our homework.

This is impossible, it _____ be a mistake!

It is used in writing to express how definite you are about something.

What is the modality used in this sentence:

I will seriously take your advice.

The 2 degrees of modality are:

What kind of modals would help the writer's opinion sounds stronger?

It makes opposing views sound weaker.

You______leave your door unlocked when you go out.

You ______look at me when I am talking to you.

I didn’t feel very well yesterday. I _____  eat anything.

I was using my pencil a minute ago. It ______ be here somewhere!

Already as a child Mozart_____  play the piano beautifully.

could