知不知道

To know; to understand; to be aware of; to recognize; to distinguish; to associate with; to entertain or treat; knowledge or learning.

Function word; no; not; un-; negative prefix; used to form questions or emphasize a statement; sometimes used for rhythm.

road; path; way; method; principle; truth; doctrine; skill; art; to say; classifier for long things, barriers, questions, commands, courses, steps.