For beginners

Modal verbs like 'can', 'may', and 'should' express possibilities, abilities, and advice. They convey uncertainty, capability, and recommendations in English.

Modal Verbs 'Can', 'May', and 'Should' in English Grammar

What Are 'Can', 'May', and 'Should'?

Can, may, and should are modal verbs that are grammatically similar but express different meanings.

Can

Can’ is used to talk about ability. It has the same form for all persons and is always used with the base form of the verb. Look at the examples:

I can ride a bicycle.

'Can' is used to talk about ability.

She can paint beautiful pictures.

'Can' has the same form for all subjects.

They can drive.

May

May’ expresses possibility. Like ‘can’, it has the same form for all persons and is always used with the base form of the verb. Here are some examples:

It may rain this afternoon.

She may arrive soon.

Should

'Should' shows obligation and duty and it has the same form for all persons and is always used with the base form of the verb.

You should stay here.

Students should complete their homework on time.

Question

To form questions using these modals, they move to the beginning of the sentence, and the subject and the base form of the main verb come after them. For example:

Can you drive?

Should I call the doctor?

Negation

To make negative sentences using these modals, simply add ‘not’ after them and then add the main verb. Here are some examples:

I cannot run that fast.

I may not see you tomorrow.

You should not do that.

Warning!

Modals cannot be used with ‘do/does/did’ or ‘to be’ verbs in the same sentence.

They do may come to the party.

I am can run very fast.

She does should sit down.

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