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。

    A hedge between keeps friendship green.

    君子之交淡如水。

    A joke never gains an enemy but loses a friend.

    戏谑不能化敌为友，只能使人失去朋友。

    A leopard cannot change its spots.

    积习难改。