Modal Can
The Modal verb Can means power
Affirmative
Example:
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Negative:
To negate a modal verb we do not need any auxiliary.
Remember that we can also find the full form 'can not' or 'cannot' with the same meaning.
Interrogative:
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To ask with a modal verb we invert the modal verb with the subject.
SHORT ANSWERS: To respond with short answers we use the modal verb only.
Yes, I can. / No, I can't.
Estructura:
Affirmative:
Subject + aux can + verb + complement...
Negative:
Subject + can not (can't) + verb + complement...
Interrogative:
can + subject + verb + complement...
Uses
Can do something
requests
¿Can you buy me a drink?.
¿Can I ask you something?.
I can eat healthy.
I can run more.
We can sing the music.
¿Can I take a picture of you?.
¿Can they wash their clothes?
The verb can in Spanish means "Power", this verb is used to express ability, to say that something is possible, to ask permission and/or to offer something.
Way of being of a person
They can be bad.
He can that this sad
They can be kind.
They can be very funny.
You can swim well
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Although in Spanish we use the verb 'know' in English we must use the modal 'can' to express ability.