Question

------Tom is never late for work. Why is he absent today?------ Something _______ to him. A．..

------Tom is never late for work. Why is he absent today?------ Something _______ to him. A．must have happened B．can have happened C．must happen D．can happen

Answer 1

A

试题分析：根据句意：汤姆从来不迟到。为什么今天迟到了呢？他肯定是出了什么事。 must have done 过去肯定做了某事，对过去的肯定推测。 对过去的否定推测应用 can’t have done.一般没有B这种形式。C表对现在的推测，不对。 点评：本题是高考必考考点，一定要牢记句型意思。must have done过去肯定做了某事。 should have done 本应该做而实际未做。 can’t have done 过去不可能做了某事 shouldn’t have done 本不应该做而实际做了。 need have done 本有必要做某事 needn’t have done 本没有必要做某事 注意没有 mustn’t have done的形式