So sudden______that the enemy had no time to escapeA.did the attack B,was the attack这里的答案是A,那么did 和was的区别在哪儿

问题描述:

So sudden______that the enemy had no time to escape
A.did the attack B,was the attack
这里的答案是A,那么did 和was的区别在哪儿

A 是错的!
正确答案是B
B,was the attack
sudden 是形容词作表语,缺系动词was,所以这是主系表结构,正常语序为:
The attack was so sudden
so.that 句型中,so+ 形容词前置时用部分倒装语序