The only thing I can do is (to) do it alone.为什么不能要括号中的to?
问题描述:
The only thing I can do is (to) do it alone.为什么不能要括号中的to?
We have no choice but (swimming) across the river.为什么要用原型而不能用ing形式?
I'm looking for something which to clean the curtain.哪里有错?为什么要这么改?
答
1.前有do 后无 to 2.have no choice but to do sth 是固定词组 3.with which 介词加关系代词,which 指代sth