[kāi dǎo]
help sb. to see what is right or sensible; help sb. to straighten out his wrong or muddled thinking; enlighten; give guidance to; educate and enlighten; explain and make sb. understand
enlighten sb. on sth.
就某事開導某人
He hasn't come round yet. Could you try and straighten him out?
他一時想不通， 你開導開導他好嗎?