No one, save perhaps his wife, knows where he is.
这句话中,perhaps本身为副词,就顺序而言,perhaps位于介词save和其宾语his wife之间,这种表达相对于perhaps放最后(save his wife perhaps )哪个好?还是没区别?
perhaps 通常放在句首,也可以放在 be 动词后面,但是不能放在句末。