Obviously, there is a lot of anger there.

很明显，我很生气。

What's happening?
甲：怎么了？
Obviously, there is a lot of anger there.
乙：很明显，我很生气。
I was very angry.
我很生气。
His attitude really gets my back up.
他的态度真让我生气。
Your staff does annoy me.
你的员工确实让我气憤。
That really pissed me off.
那确实让我生气。

I'm depressed.

我有点沮丧。

John, you seldom talk with others. What's wrong?
甲: 约翰，你很少和别人交谈。怎么了？
Sorry. I'm just a little depressed.
乙：对不起。我只是有点沮丧。
I'm so upset.
我很沮丧。
I felt frustrated.
我感到沮丧。
I'm really desperate.
我真的感到很绝望。
I'm at the end of my rope.
我没希望了。