The light bulb ______ by Edison in the middle of the 1780s.A．is inventedB．was in
题型：不详难度：来源：
The light bulb ______ by Edison in the middle of the 1780s.| A．is invented | B．was invented | C．invented | D．invent |
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答案
| B |
解析
试题分析：句意：电灯是爱迪生在18世纪80年代中期发明的。应用被动语态的过去时。句中有in the middle of the 1780s表示18世纪80年代中期，是一个过去时间，故用一般过去时的被动形式。
点评：被动是中考中必考的语法点。解答好此类被动语态的题目，首先需要对句意有充分的理解，其次注意被动语态的基本形式。对于各个时态的被动语态，学生在平时的学习中都必须了然于心，中考英语中很亲睐考察将来时的被动语态，即will+be+done. |
举一反三
When he was at college, he and his friends to organize a party.| A．are asking | B．were asked | C．was asked | D．asks |
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—Oh, this is really an old building.
—Do you know when it ?| A．has built | B．is built | C．was built | D．will be built |
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--- How beautiful your school is！
-- Yeah, it to be one of the most beautiful schools in our city. | A．thinks | B．is thought | C．isn’t thought | D．doesn’t think |
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--Are you often on vacation? -- Not always.| A．relax | B．relaxing | C．relaxed | D．to relax |
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–Our classroom _________ twice a day. So it is very clean.
–It is important for us to do this.| A．is sweeping | B．is swept | C．sweeps | D．has swept |
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