We really don't know what( is to face/to fcea)in the future.括号中应该选哪个?
问题描述：
We really don't know what( is to face/to fcea)in the future.括号中应该选哪个?
答
to face从语法上讲为什么是to face如果用is,用完整句，就应该改成 We really don't know what we are to face in the future因为如果选 is to face ，从句就没有主语，所以不成立而to face, 不定式做后置定语，修饰what