beside oneself---------情绪激动的 （形容词词组）

英文释义
(ADJECTIVE PHRASE) Very excited; quite nervous and upset.

例句
This morning I could not find my car keys, and I was beside myself because I had an important meeting at work.
今天早上，我找不到车钥匙，情绪非常激动，因为我要上班参加一个重要的会议。