题目内容
16.I knew light _________ faster than sound when I was very young.( )| A. | travelled | B. | travel | C. | travels | D. | travelling |
分析 当我很小的时候,我就知道光的传播比声音快.
解答 答案:C
根据I knew 可知后面light _________ faster than sound 这一部分为宾语从句;结合选项可知宾语从句意为:光的传播比声音快,这是一个客观真理,时态不受主句时态的限制,永远用一般现在时态.从句主语为三单 light,所以谓语动词也要用三单形式travels.故选:C
点评 此题考查宾语从句的时态.知道当从句表达的是客观真理时,时态用一般现在时是做此题的关键.
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