【变式探究】—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
—Oh, dear ! She __ a lot of difficulties !
A. may go through
B. might go through
C. ought to have gone through
D. must have zone through
【名师点睛】
“情态动词 +过去分词”用法
1.must have done表示对过去已经发生的行为进行推测,意思是“想必、准是、一定做了某事”。
例如:
It must have rained last night, for the ground was quite muddy.
The lights were out. They must have been asleep.
2.may/might have done表示对过去已经发生行为韵推测;意思是“也许;或许、已经(没有)…”。
一般只用于肯定句或否定句中,不用于疑问句。用 might 表示语气更加不肯定。
例如:
It’s too late. I think he may have gone to bed.
He may not have finished the work. She might have caught a cold.
3.might have done表示“本来可能;…”,但实际上没有发生的事情。还可以表示“本来应该或可以做某事”的意思;有轻微的责备语气。例如:
You should not have swum in that river.
You might have been eaten by fish.
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