2023年四川成人高考高起点《英语》重点复习资料(4)

　　　　四川成人高考英语情态动词部分常考情态动词的一些固定结构

　　如：1 must /may /might +动词原形(表对现在事情的肯定推测)

　　She ________on her way to school, I just phoned her home and no one answered me.

　　A. should be B . must be C. might have been D. could be

　　解析：本题考查考生对情态动词固定结构的掌握，由于本题是对现在事情的推测，故选B。题意为：她肯定在上学的路上，我刚打电话给她家里，没人接。

　　must /may /might +have +PP(过去分词) (表对过去事情的肯定推测)

　　--They are supposed to arrive at six, but there is no sign of them..

　　--Something unexpected__________-to them.

　　A . might happen B .must have happened C. would have happened D. could happene

　　解析：此题考情态动词对过去事情肯定推测的结构，故选B 题意为：他们原定于6点到达，但现在连人影都没见到，肯定出什么事了。

　　couldn’t / can’t +have +PP ( 表对过去事情的否定推测)

　　“I saw Mary in the Library yesterday.”

　　“you her, she is still in hospital.”

　　A mustn’t have been B could not see C. can’t have been D. must not see

　　解析：此题考情态动词对过去事情否定推测的结构，故选C 题意为：我昨天在图书馆看到玛利了。 你不可能看到她，她还在医院里呢。

　　You ________have seen Jane in her office Last Friday, she’s been out of town for two weeks.

　　A couldn’t B . mustn’t C . wouldn’t D. shouldn’t

　　解析： 题考情态动词对过去事情否`定推测的结构，故选A 题意为：上个星期五你不可能在简的办公室看到简，她已出城两个星期了。

　　4.Ought to / should +have +PP (表过去应做的事而实际上未做，含有责备的口气)

　　You ____________yesterday if you were really serious about the job.

　　A ought to come B ought to have come C. ought have come D. ought come

　　解析：此题考查过去应做的事而实际上未做，故选B 题意为：如果你很在乎这份工作的话，昨天你就该