be on cloud nine 非常开心
over the moon 欣喜若狂
walk on air 兴高采烈
feel elated 感到兴奋
be thrilled to bits 非常激动
in high spirits 情绪高涨
1. She felt like she was tread on air after hearing the good news.
听到好消息后，她感觉自己欣喜若狂。
2. He was tread on air when he passed the exam.
他通过考试时高兴得飘飘然。
3. After winning the competition, they were all tread on air.
赢得比赛后，他们都兴奋得难以自持。
4. She looked as if she were tread on air all day.
她一整天看起来都像在飘飘然中。
A: You look like you are tread on air today.
A：你今天看起来开心得像飘在空中一样。
B: I am! I just got accepted to my dream university.
B：是的！我刚被梦想大学录取了。
1) 表示极度快乐、兴奋的状态（类似walk on air）
2) 用于形容因好消息而情绪高涨
3) 口语化表达，强调轻松愉快的心理状态
1. （非标准/变体表达）极度高兴，欣喜若狂的状态
e.g.
She was tread on air after the promotion.
她升职后欣喜若狂。
verb phrase
1. to feel extremely happy or excited, as if one is floating because of joy (often considered a variant of “walk on air”)