如果你非常高兴，可以用英语说 "I'm over the moon!" 这句话来表达你的心情。这个短语来自于一个俗语，即 "to be over the moon"，意思是非常高兴或兴奋。

例如：

I'm over the moon about my new job! 我因为新工作而高兴极了！

I was over the moon when I heard the news. 当我听到这个消息时，我高兴极了。

She was over the moon when she got accepted into her dream college. 她收到梦想大学的录取通知时，非常高兴。

另外，还可以用其他短语来表达高兴的心情，例如 "thrilled"、"ecstatic"、"delighted" 等。例如：

I'm thrilled to have you here with me. 我非常高兴你能和我在一起。

She was ecstatic when she won the prize. 她获奖时非常激动。

He was delighted to see his old friend again. 他看到老朋友再次来访时非常高兴。