My best friend has been like a sister to me.

　　我最要好的一個朋友待我親如姐妹。

　　He went off with his best friend's wife.

　　他和最要好的朋友的妻子走了。

　　She confided all her secrets to her best friend.

　　她向她最要好的朋友傾吐了自己所有的秘密。

　　John's my best friend

　　約翰是我最好的朋友。

　　I found myself behind a curtain, necking with my best friend's wife.

　　我意識到自己在簾子后面吻著至友的妻子。