The next thing to do is to encourage Mary to walk on 中的to do
The next thing to do is to encourage Mary to walk on 中的to do 可换成to be done吗为什 The next thing to do is to encourage Mary to walk on 中的to do 可换成to be done吗为什么
这里的不定式在个别情形下也可用被动形式,含义区别不大,例如:? There is so much work to do/to be done.? 有这么多事情要做。? Give me the names of the people to contact/to be contacted.? 把那些要联系的人的名字给我。?