It is +一段时间+since ved

举例：live是连续性动词，move是短暂性动词。It is two years since we moved to the big city. 译为自从我们搬到这座城市已经有两年了。It is two years since we live here. 译为我们住在这里已经有两年了。从这两句话可以看出，不管动词是连续的还是短暂的，只要根据理解的意思翻译出来就好了。