(英语)关于被动主动的问题

问题描述:

(英语)关于被动主动的问题
The problem is difficult __________.
A.to solve
B.to be solved
C.being solved
D.to solving
我选了B
而这里为什么要用主动关系啊?

easy,difficult,comfortble ,hard……有之类的形容词的用主动代替被动
如 The chair looks rather hard,but in fact it is very comfortable to __________.A.sit B.sit on C.be sat D.be sat on 这道题目选B
sit不用被动语态.sit on =be seated on