friend的形容词和副词形式是？

例句：

We are still friends, though, which is good.

不过我们仍然是朋友，这令人感到欣慰。

He's made a lot of new friends.

他交了许多新朋友。

We've been friends a long time.

我们是老朋友了。

They've been best friends since they were children.

他们从孩提时起就是最要好的朋友。

He's one of my best friends.

他是我最要好的朋友之一。