be friendly to sb 对某人友好；

例句：

He would always go out of his way to be friendly towards her.

他总是特意向她表示友好。

We should be friendly to each other.

我们应当彼此友好。

To make true friends, you need to be friendly to others in the first place.

要结交真正的朋友，首先就要对他人友好。

She is said to be friendly to everyone.

据说她对每个人都友好。

On the other hand, be friendly to people.

另一方面，对人友善。

You should be friendly to your classmates.

你该对同学友好。