I'll be looking forward to it.

我将期待这一天。

I'm easy to please.

我很容易相处。

It's raining cats and dogs.

下着倾盆大雨。

It's her birthday and she wants to gives us all a treat.

这是她的生日，她要款待我们大家。

Nothing gives me more pleasure than learning English.

再也没有什么比学英语更让我高兴的事了。

As far as I'm concerned, you can do what you like.

就我而言，你可以自便。