I'm so happy.

我太高興了。

I'm overjoyed.

簡直讓我喜出望外。

I'm flying.

我有點飄飄然。

I'm delighted.

我很高興。

I'm so happy, I can hardly contain myself.

我太高興了，簡直抑制不住自己的興奮。

ecstatic

狂喜的；

They are ecstatic about their first kid.

他們為有了自己第一個孩子而感到欣喜。

dialogue1

A: I can't believe it, I'm so happy I got an A.

我簡直不敢相信，我得了一個A.

B: Congratulations. Your father will be so proud.

恭喜。你爸爸一定為你感到驕傲。

dialogue2

A: What's up? I've never seen you look so happy.

怎么了？我從沒看你這么開心。

B: Jennifer just told me she loves me, I can hardly contain my excitement.

珍妮弗剛剛說她愛我。我實在無法抑制自己的興奮。

Conversation:

A: Check this out, I just got accepted to grad school.

快看看，我考上研究生了。

check this out非常地道，用來引起別人注意自己下面要說的話。

B: That's fantastic. What a great feeling that must be.

太好了，你肯定感覺棒極了。

A: That's for sure, I'm walking on air right now.

當然了，我現在都有點飄飄然了。

walk on air字面意思是“在天上走路”，形容人高興地飄飄然

B: Well, you worked really hard, so you deserve it.

你學習那么努力，這是你應得的。

A: Thanks. When I show my dad, he's going to be ecstatic.

謝謝，我把這個消息告訴我爸爸，他肯定會欣喜若狂的。