题目内容
11.-I went to the Australia Embassy yesterday to apply for a visa.--Oh,you _____ that because you can apply on line.( )
A. | don't need to do | B. | mustn't do | ||
C. | can't have done | D. | needn't have done |
分析 -昨天我去澳大利亚大使馆申请签证了.
-哦,你本来不必如此的,因为网上也可以办的.
解答 答案:D.
根据题干中的时间状语yesterday可知办签证这事发生在过去,再由结构"情态动词+have done"表"对过去情况的推测",结合这两者可排除选项A和B.C选项can't have done表"过去肯定没有做某事"在此意为"昨天肯定没有去申请签证",前后文自相矛盾,故也排除.D选项needn't have done表"本没有必要做某事却做了".根据because从句可知,网上可以办理签证,所以"你昨天本来没有必要去大使馆办理的",与上文相互照应,语意吻合,符合逻辑.故选D.
点评 情态动词与过去完成式连用,表"对过去情况的推测",其结构为"情态动词+have done".如:can't have done表"过去肯定没有做某事";could have done表"本来能做成的却没有做成";must have done"过去肯定做了某事";should/ought to have done表"本该做某事却没有做";shouldn't/oughtn't to have done表"本不该做某事却做了";needn't have done表"本没有必要做却做了"
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