to request permission from someone or for something
to ask for permission from someone or for something
Examples of the verb tense "can":
The cat can go to the store.
Can I go to school late on Tuesday?
You can't go to school late on Tuesday?
We can't help you clean the house.
The structure of the verb tense "can":
When using as a verb or an auxiliary verb the verb tense
"can" stays in its base form.
Can doesn't change form according to the subject.
Can is followed by a main verb tense. The main verb tense also stays
in its base form. (The main verb tense that is used with can doesn't change
form according to the subject.)