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
