I'm really angry.                                                                 

我真的生气了。

I'm getting angrier.                                                             

我越来越生气了。

I'm so angry that I can't calm down.                                  

我因为太生气而无法冷静下来。

You keep bugging me. /You keep making me mad. /You are driving me crazy. 

你一直让我生气。

If you keep doing it, I'm going to get angry.                        

如果你继续那样的话，我会生气的。

Stop it! Mom will get angry.                                                

停止！我要生气了。

I'm really angry now. Okay?                                               

现在我真的生气了。知道吗？

I get annoyed by my friend. / One of my friends is really annoying.

我被我的朋友激怒了。

I get angry because he doesn't understand me.

因为他听不懂我的话，所以我很生气。