He was obviously in a state of exaltation.

十分明显，他又得意忘形了。

He is swollen with his own importance.

他自以为了不起而得意忘形。

Don't be above yourself. You still have a long way to go.

不要得意忘形，你还有很长的路要走。

The success of his first novel completely turned his head.

他第一部小说很成功, 便得意忘形了.

I should think you would be just too proud to breathe.

我都怕你会得意忘形了。

Don't swagger just because you got the job.

别因为得到了这份工作就得意忘形.