英语翻译用it has....句型呢?

问题描述:

英语翻译
用it has....句型呢?

I've been smoking for four years.
用since也可以啊,这样说:
I have been smoking since four years ago.就行了,祝LZ学业进步

I smoke for four years

I have been smoking for four years,用since的话意思就变为了我四年前吸烟

I have been a smoker for four years.
It has been four years since I took the first cigar.