My neighbour is a widow.

我的邻居是一个寡妇。

Our next-door neighbour and his friends used to beat it up a little on Saturday evenings.

我们的隔壁邻居和他的朋友们常于星期六晚聚会，欢闹一番。

You should keep fair with you neighbour.

应当和邻居保持友好关系。

※A good neighbour is better than a bother in the next village. 远亲不如近邻。
※Danger is next neighbour to security. 危险是安全的近邻。
※It's arecession when your neighbour loses his job; It's a depression when you lose your own.——  (Trueman Harry S)  邻居失业，意味着经济萧条；自己失业，意味着意志消沉。（杜鲁门 H*S）