Question

it necessary that a plan be wtade before doing the work．这是虚拟

Answer 1

楼主好,

这里是虚拟语气,It is necessary that sb should do sth 做某事是很必要的.虚拟语气的结构是should / would /could do sth.

上面句子应该改为 it its necessary that a plan (should) be made before doing the work.

做这项工作之前,得制定一个计划.