1．作名词，relation between sth. and sth.

relation to sth. （人或者事物与他者之间的）关联，联系，关系。例如：

The relation between time and results. 时间和成绩的关系。

It shows on relation to the rainfall. 它与降雨量没有任何关系。

2．in / with relation to sb. / sth. （正式）与某人 / 某事有关，涉及某人 / 某事。例如：

Describe the location of the following lands, seas and cities in relation to New Zealand.

描述下列陆地、海洋、城市的地理位置和新西兰之间的关系。

3．relations between sb. / sth. and sb. /sth.

relations with sb. /sth. （人，团体，国家等之间的）关系，联系，交往

diplomatic relations 外交关系

international relations 国际关系

business relations 业务关系

The friendly relations between our countries 我们国家之间的友好关系

He broke off relations with his family. 他与家庭断绝了一切联系。

4．relationship关系，联系：relationship between A and B. 例如：

There is close relationship between industry and trade.

工业与贸易之间有紧密的联系。

A pure business relationship 纯业务关系

He had a good relationship with his boss. 他和老板的关系很好。

5．比较relation和relationship：

a．relationship的用法最广，包括了relation和relations的许多涵义。relation和relationship可以用来表示亲属关系。例如：

A relation of mine is coming to stay. 我有个亲戚要来这里暂住。

－What’s your relationship to her? 你和她是什么亲戚？

－She is my cousin. 她是我的表妹。

b．relationship 可以指强烈的感情关系。例如：

Their relationship has lasted many years. 他们的感情已经有很多年了。

c．如果不侧重个人关系或友谊时，可以使用relations或者relationship。例如：

Relations with the USSR are improving. 与苏联之间的关系正在改善。

Britain has a unique relationship with the USA. 英国与美国之间关系很特别。

d．relation和relationship可以表示事物之间的相似之处或者一致性。例如：

Some people say that there is no relation / relationship between violence on television and crimes of violence in life. 有人说电视中的暴力镜头和生活中的暴力犯罪并无关系。