Can / Can't use
Can / can’t is used to talk about ability, possibility, and also to make a request or ask for permission in a simple and polite way.
Can / Can't Form
The structure is formed with can or can’t + the base form of the verb (V1). The form can stays the same for all subjects.
Subject + can + V1
Subject + can’t + V1
Can / Can't Rule
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Can is used to talk about ability or skill.
My brother can swim very fast.
I can’t draw well.
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Can is also used to talk about possibility:
something is possible, realistic, or allowed in a situation.
We can go by bus.
You can park here after 6 p.m.
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In questions, can is often used for requests
and simple questions about permission.
Can you help me with this box?
Can I use your phone for a minute?
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After can, we use only the base verb form without to.
❌ She can to dance.✅ She can dance.
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The form can is the same with all subjects: I can, he can,
they can. We do not add -s.
✅ He can drive.❌ He cans drive.
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The full negative form is cannot, and the more common short form is can’t.
✅ I cannot stay long.✅ I can’t stay long.
Can / Can't Negation
Negation is formed with cannot or can’t. After them, we still use V1.
Subject + cannot / can’t + V1
Can / Can't Questions
In questions, can comes before the subject. In short answers, we usually use Yes, ... can / No, ... can’t.
Can + subject + V1?
Wh-word + can + subject + V1?