| A. | is;developed | B. | was; developed | C. | were; developed |
分析 ---数码相机是什么时候什么地方发展的?
---二十世纪七十年代在日本
解答 答案:B.
结合句意可知表达的是过去的事情用一般过去时.,the digital camera是动词develop的承受者,故用一般过去时的被动语态was/were+过去分词,主语三单,故was,故选B.
点评 被动语态(passive voice)是动词的一种形式,用以说明主语与谓语动词之间的关系.英语的语态共有两种:主动语态和被动语态.主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者.被动语态是动词的一种特殊形式,一般来说,只有需要动作对象的及物动词才有被动语态.汉语往往用"被"、"受"、"给"等被动词来表示被动意义.被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.
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