题目内容
9.Since we began to use the Internet,our lives a lot.( )| A. | change | B. | had changed | C. | will change | D. | have changed |
分析 自从我们开始使用网络,我们的生活改变了很多.
解答 答案:D.结合Since we began to use the Internet可知动作发生在过去,对现在造成一定的影响,故用现在完成时have/has+过去分词,主语our lives,故have,故选D.
点评 现在完成时有两种用法1.过去发生的某一动作对现在造成的影响或结果或到现在为止已经发生或完成的动作.2.表示过去发生的、持续到现在的动作或状态.
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