Question

Oh, look at you---you are trembling! You must feel cold now. In fact, you __________ in person. You can contact us by phone next time.

1. A.
   didn’t need to come
2. B.
   needn’t come
3. C.
   needn’t have come
4. D.
   don’t need come

Answer 1

C
试题分析：needn’t have done过去没必要做某事，而做了。句意：看看你---你在发抖！你一定感觉冷了吧。事实上，你没有必要亲自来，下次你可以打电话和我联系。故选C。
考点：考查情态动词的完成式的用法。
点评：本题难度适中。情态动词的完成式是高中阶段的重难点之一，需要考生熟记它们的用法，在各类考试中经常出现，它主要用于表示对过去情况进行推测或责备等。
即学即练：He didn't do well in the exam. He_____ hard at his lessons.
A. must have worked      B. ought to have worked
C. would have worked     D. has worked
解析：B。