how many years has it been since we last saw each other?这里的 has it been 这个该怎样翻译啊 ..能解释更好了....

how many years does your company has been established? how many years翻译 I wonder how many years ago____________.A、did your father retire B、your father retired C、has your father retired D、your father has retired 高一名词性从句6I wonder how many years ago___.A.you father retiredB.your father has retired为什么选A?我觉得是B, 造句 How many years ago it has taken us many years to learn how to provide these foods how many does he has? 怎样区分how many和how many years It has been many years since I enjoyed myself so much. It has been many years since I was a big cheese. How many years to forget you I don't know .May be I wonder how many years ago your father retired属于什么从句? 语法分析I still remember how many years ago__it was that______I last met her in the countryside. I want to know how many years of the jinan university?是暨南大学 How many years then you are most? How many years make a century? How many years are there in a c______?100 years. I still remember how many years ago it was that I last meet her.中的 ago 可否去掉?为什么?I still rememeber how many years it was since I last met her．可以去掉it was