题目内容
1.For many years,people __ electric ears.However,making them has been more difficult than predicted.( )A. | had dreamed of | B. | have dreamed of | C. | dreamed of | D. | dream of |
分析 多年以来,人们一直梦想拥有电子耳朵,然而,电子耳朵的制造远比预期的要难得多.
解答 答案B.for+段时间 做状语,后面常用完成时态,所以排除了CD.因为一直以来都是"想要有",现在还是"想要",所以用一般完成时,不用过去完成时,过去完成时表示过去的过去就已经完成的动作.所以就选B.
点评 时态题的考查关键是抓住句子的上下文含义和句中的时间状语.要根据时间状语来选择合适的时态,在平时的学习中要注意积累有关时态的用法和各种时态的特殊之处.
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