吃一堑，长一智。

.A fox may grow gray, but never good.

江山易改，本性难移。

.A friend in need is a friend indeed.

患难见真情。

.A friend is easier lost than found.

得朋友难，失朋友易。

.A friend is never known till a man has need.

需要之时方知友。

.A friend without faults will never be found.

没有十全十美的朋友。

."After you" is good manners.

“您先请”是礼貌。

.A good beginning is half done.

良好的开端是成功的一半。

.A good beginning is half done.

善始者善终。

.A good book is a good friend.

好书如挚友。

.A good book is the best of friends, the same today and forever.

一本好书，相伴一生。

.A good conscience is a soft pillow.

不做亏心事，不怕鬼叫门。

.A good fame is better than a good face.

美名胜过美貌。

.A good husband makes a good wife.

夫善则妻贤。

.A good medicine tastes bitter.

良药苦口。

.A good wife health is a man's best wealth.

妻贤身体好是男人最大的财富。

.A great talker is a great liar.

说大话者多谎言。

.A hedge between keeps friendship green.

君子之交淡如水。