5、A friend is a second self.
朋友是另一个我。
6、One friend in a lifetime is much; two are many; three are hardly possible.
一生有一个朋友就够了，有两个则太多，三个则很难存在。
7、A life without a friend is a life without a sun.
人生在世无朋友，犹如生活无太阳。
8、A hedge between keeps friendship green.
有一道隔墙会保持友谊常青。
9、Life without a friend is death without a witness.
在世无朋友，死后无证人。
10、A true friend is known in the day of adversity.
疾风知劲草，患难见真情。
11、A friend in need is a friend indeed.
患难见真交。
12、A friend is never known till aman has need.
