要看不及物动词是不是可以加上一个介词构成动词短语,如果可以就可以有被动语态：A dog is running after a cat.A cat is being run after by a dog.The nurse looks after the patients.The patients are looked after by the nurse.因为一个不及物动词在加上了一个介词后,它就是视同一个及物动词一样了,当然可以加宾语.有了宾语当然可以有被动.学习要灵活,光看语法书不会用,没用.——话语引用来自知道用户“鹏程英语家教”
