tell good-bye的用法和樣例：
例句
- The art of being a good guest is to know when to leave.
當好客人的藝術就是知道什麼時候該告辭。 - Her eyes kept straying to the clock and,a nod being as good as a wink to a blind horse,I said I had an appointment to meet a friend,and left.
她老是用眼睛瞟著鍾，明人不用細說，我借口有約會要見一位朋友，便起身告辭了。 - He bound to his feet and wave good- bye to his friend.
他一躍而起，向朋友們揮手告別。 - We went to the bank together then said good bye and separated.
我們一起去銀行，然後彼此告別就分手了。
