关于need的提问（选择题）What a gift you've brought me! You are so kind, but you _______ so.A. shouldn't doB. needn't doC. couldn't have doneD. needn't have done答案是D 我选了B请亲分析下 谢谢
问题描述：
关于need的提问（选择题）
What a gift you've brought me! You are so kind, but you _______ so.
A. shouldn't do
B. needn't do
C. couldn't have done
D. needn't have done
答案是D 我选了B
请亲分析下 谢谢
答
情态动词之后表过去用过去现在完成时,等于是向前推了一个级别
must也一样
情态动词只有表现在用进行时
表过去用现在完成时
答
首先解释下这句话的意思：你带来给我的礼物真的很棒!你真的很贴心,你本不需要送的.事实上他已经送了礼物,不需要这句话就是虚拟的,.虚拟语气就是假设的.虚拟语气就有种形式sould have done|could have done|ought have done |……所以选择符合含义的B选项.即使按照淘汰法,也先就淘汰前两个选项.