Question

关于英语虚拟语气，如图，将这个选择题当做填空题。空白部分可以填couldn't have writ

关于英语虚拟语气，如图，将这个选择题当做填空题。空白部分可以填couldn't have written吗？

Answer 1

这道题你才是正确的，就算是选择题这也是错误的选项。就应该是couldn't have written. 你如果查一下百度虚拟语气词条，你可以看到：
表示与过去事实相反的情况
从句：If+主语+had+done
主句：主语+should/would/might/could+have done
所以这里主句就不能用hadn't的说法

追问

它答案是wouldn't have written,我想知道可不可以填couldn't have written

追答

呵呵，那是我当时看错了，以为hadn't seen最后一个就是D. 严格的说， wouldn't have written 也不对，wouldn't have done更多的是指意愿上的，而couldn't have done 才是不可能。结合上下文，明显题意是"如果没有经历过战争，海明威写不出这本小说。

试比较: I couldn't have done it without you. 没有你我不可能做成此事。
I wouldn't have done it without you. 要不是你我不会做这件事。