是我英文怎么写

例句：

今天能在这里欢迎您是我极大的`荣幸。

It gives me great pleasure to welcome you here today.

这是我做过的最难的事情之一。

It was one of the hardest things I ever did.

这正是我一直在期待的机会。

This is just the opportunity I've been waiting for.

那是我一生中最快乐的一段时光。

That was one of the happiest moments of my life.