verb
[modal verb]
used as the past tense of can
usage see1can</USAGER
a - used to say that something is possible
b - used with have to say that something was possible but did not actually happen
c - used to talk about something that is not possible but that is hoped or wished for
used in speech to make a polite request or suggestion
used to say that you are annoyed by something that was or was not done
used in statements that express a strong emotional reaction
used in statements that describe something as very bad, good, etc.
could care less
could do with
If you could do with something, you need it or would be helped by getting or having it.