strong /kæn/weak /kən/, /kn/modal verb(past tense and past participlecould)
Definition
ABILITY›to be able to do something: Anna can speak four languages.We can't pay the rent.Can you drive?
PERMISSION›to be allowed to do something: You can't park here.Can I go now?
ASK›used to ask someone to do or provide something: Can you tell her to meet me outside?Can I have a drink of water?
OFFER›used to politely offer to do something: Can I carry those bags for you?
POSSIBLE›used to talk about what is possible: You can buy stamps from the shop on the corner.Smoking can cause cancer.
TYPICAL›used to talk about how someone often behaves or what something is often like: She can be really rude at times.This area can be dangerous at night.
SURPRISE›used to show surprise or lack of belief: You can't possibly be hungry already!Can you believe it?