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 makes a good ending.

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。