英语翻译work on it还是work it on,我做到的一题怎么是work on it是不是代词不用放中间

on it我知道动词+副词构成的短语.代词要放中间.但是做到一题说 work on it.我想知道work on是一个怎 当宾语是it等代词时work on这个短语怎么用?是不是work it on.? work on it 能不能写成work it on. don't work on it 关于Work on it的疑问.. work on it和cut it up work on it had begun 为啥不用被动? 为什么是work on it而不是work it on?也有cup them up啊!这些怎么区分? 请问“work on it had begun before my sister laft.”一句中的work on i 之前说过V加上介词短语,代词放中间,名词放后面,可为什么八上书P662c用了work on it? work it out 这种词,怎么判断中间it代词放哪? Work on it had begun before my sister left.work on it 是什么结构