Don't know much (无须知道太多) Don't Know Much (无须知道得太多) Don't konw much （无需知道太多） Don't know much(知道的不多) Don't say too much (无须说太多) Don't Know Much=不要知道太多 Don't know much(不太了解) Don't know much about Don't know much Don't know why(不知为何)