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。