Look at you guys just hitting it off.

看看！你们真是天生一对啊！

—— The Big Bang Theory

Hit it off 合得来，投缘

Hit it off用来说人与人之间性情相投，而且可以用来描述任何种类的人际关系，包括一般友情和婚恋关系。

某人的老朋友Bruce比他晚几年来到这个城市，人生地不熟，于是他把Bruce介绍给自己相熟的朋友，其中包括当老师的Betty。我们特别注意里面的习惯用语hit it off ：

例句：Bruce and Betty really hit it off right away. They started seeing each other, then after a year or so decided to get married. Now, six years later, they have four kids and are just about as close to each other as two people could be.

他说：Bruce和Betty真是一拍即合，见面后马上就开始约会，差不多一年后就决定结婚。他们已经结婚六年，现在他们有四个孩子，可是两人之间还是亲密无比。

这里的习惯用语hit it off用来说人和人相互合得来。