That is a good book.You () it yesterday选哪个That is a good book.You () it yesterday.a could buy b should buy c should have bought d bougt

Question

That is a good book.You () it yesterday选哪个
That is a good book.You () it yesterday.
a could buy b should buy c should have bought d bougt

Answer 1

这个是虚拟语气的一种 选C
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/could/might+have done　
eg：
1． If I had got there earlier,I should/could have met her. 如果我早到那儿,我就会见到她.
（事实：去晚了）
2．If he had taken my advice,he would not have made such a mistake. 如果他听我的劝告的话,就不会犯这样的错误了.
（事实：没有听我的话）
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