【用法】
at the moment用于现在时态中，意思是“此刻”，用于过去时态中，意思是“那时”,引导时间状语从句意思是“一......就......”
试比较：I am busy at the moment. 我此刻很忙。
I was busy at the moment. 我那时很忙。
At the momentI get to Beijing,I'll write to you.我一到北京,就给你写信。
