专题4 情态动词与虚拟语气
1．I________to my cousin’s birthday party last night，but I was not available. (2013·安徽，28)
A．went B．had gone
C．would go D．would have gone
答案 D
解析 考查虚拟语气。句意为：昨晚，我本该去参加我表弟的生日聚会，但我没有时间。would have done“本该做(但未做)”。
2．It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words. (2013·安徽，34)
A．may B．couldn’t
C．should D．needn’t
答案 B
解析 考查情态动词。句意为：因为你掌握了大量的单词，所以使你在练习中产生问题的原因不可能是词汇问题。couldn’t 不可能。
3．I should not have laughed if I________you were serious. (2013·江苏，30)
A．thought B．would think
C．had thought D．have thought
答案 C
解析 考查虚拟语气。句意为：如果我当时想到你是认真的，我就不会笑了。由句意知，此句是与过去事实相反的虚拟语气，故从句结构为had done。
4．—Why are your eyes so red？You________have slept well last night.
