The use of can to ask or grant permission has been common since the 19th century and is well established, although some commentators feel may is more appropriate in formal contexts. …

Can is usually used in standard spoken English when asking for permission. It is acceptable in most forms of written English, although in very formal writing, such as official instructions, may …

To describe a specific occurrence in the past, use was/were able to instead of could.

4 days ago · can (third-person singular simple present can, present participle (by suppletion) able, simple past could, past participle (obsolete) couth) (auxiliary verb, defective) To know how to. …

Define can. can synonyms, can pronunciation, can translation, English dictionary definition of can. to be able to, have the power or skill to: I can take a bus to the airport.