You ______to the meeting tomorrow if you have something important to do

问题描述:

You ______to the meeting tomorrow if you have something important to do
A.neednt to come
B.dont need come
C.dont need coming
D.neednt come
答案为什么选D 求理解

因为这是条件状语从句,从句用一般现在时,主句不是将来时,就是用情态动词
A 自身否定,认为是情态动词,可是加了to ,就错
B 用了一般现在时,错,need 后面没加to ,错上加错
C 用了一般现在时,错,need coming 表被动,错上加错
D 自身否定,正是情态动词