题目内容
11．The mobile phone has influenced people's life a lot since it _______．（ ）| A． | invents | B． | invented | C． | is invented | D． | was invented |
分析 翻译：自从手机被发明以来，它已经影响了人们的生活很多．
解答 答案：D．结合语境可知：手机是已经发明，所以下文时间状语从句中描述的是过去发生的动作，故用一般过去时态，从句主语it是动作invent的承受者，故用被动语态，因此该用一般过去时的被动语态，其构成：主语+was/were+动词的过去分词，故选D．
点评 本题考查的是一般过去时的被动语态，其构成是主语+was/were+动词的过去分词，人称和数的变化是通过be的变化表现出来的．
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