题目内容
18.The routes turned out to be marked in red in the brochure.I _______ learning the places by heart.( )A. | should have bothered | B. | couldn't have bothered | ||
C. | needn't have bothered | D. | must have bothered |
分析 事实表明路线在册子上用红色标出来了.我根本没必要记这些地点.
解答 答案:C
句意表达的是与事实相反的假设,要用虚拟;对过去事实的相反假设,要用情态动词加现在完成时态来构成;should本应该,couldn't本来不可能,needn't本不必,must表示推测;句意表达的是没有必要.故选C.
点评 虚拟语气是表示与事实相反的假设,构成方式有:对现在或将来,条件句中用一般过去时态,主语用情态动词加动词原形;对过去,条件句中用过去完成时态,主语用情态动词加完成时态.学习时,要牢记构成方式.
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