once和the moment的区别 都用一旦的意思,可是用法有什么区别

Question

once和the moment的区别 都用一旦的意思,可是用法有什么区别

Answer 1

once:除表时间外,还表示条件,一般译作“一旦.就.”.
Once he makes up his mind,he’ll never give it up.
他一旦下定决心,就决不会放弃（本句不可用as soon as）.
the moment :表示时间,一般译作“一.就.”
I found myself in an entirely new world the moment I arrived in Beijing.
我一到北京就感到耳目一新.
除此之外还有as soon asas soon as:强调的只是时间,译作“刚.就.”或“一.就.”.与the moment 用法类似
As soon as I get to Beijing,I’ll write to you.
我一到北京就写信给你.