题目内容
2.Personal computers ________ in 1976.It has changed the whole world.( )| A. | have been invented | B. | was invented | ||
| C. | were invented | D. | are invented |
分析 个人电脑是在1976年被发明的.它改变了整个世界.
解答 答案:C.在"Personal computers ________ in 1976"中,主语是"Personal computers"不是invent的发出者,而是invent的承受者,和谓语动词invent之间是被动关系,所以要用被动语态,又因是发生在1976年,故要用一般过去时的被动语态,一般过去时的被动语态的构成是"主语+was/were+及物动词的过去分词",本句中主语是可数名词的复数形式,be动词要用were,故选C.
点评 本题考察一般过去时的被动语态,要求会根据主语和谓语动词的判断出用主动语态还是用被动语态关系,掌握不同时态的被动语态的构成.
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