It is essential that everyone ___ what to do.A.knowB.knows为什么不是B呢?
问题描述:
It is essential that everyone ___ what to do.
A.know
B.knows
为什么不是B呢?
答
It is essential /important /strange/vital/ ... that sb (should) do sth 虚拟语气
答
习惯使然吧!
答
It is essential /important /natural /strange /possible that +sb do sth 虚拟语气固定句型
答
这里的其实是一个虚拟语气的句型~省略了should
It is essential ... that sb (should) do sth
希望对你有帮助哦~