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1、Unit6 When was it invented?Section A Grammar Focus-4cStep1：Revision and Lead inShow some pictures and let students answer the question:When was the computer/telephone/car/TV invented?Step2:Cooperation learning1、 Read the sentences in Grammar Focus with partners.2、 Discuss the passive voice in the pa
2、st tense.3、 简单操练主动态与被动态句型4、 分男女读句子Step3：Presentation1、 一般过去时的被动语态的句式结构肯定句：主语+was/were+及物动词的过去分词（ + by）否定句:主语+was/were + not+及物动词的过去分词（+ by) 疑问句：Was/Were+主语+及物动词的过去分词（+by )?特殊疑问词+was/were+主语+及物动词的过去分词（ + by.)?2. 一般过去时的被动语态的基本用法3. 含双宾语和复合宾语的主动句变为被动语态的方法Step4：Group work1、4a Rewrite the sentences using
3、the passive voice.2、4b Complete the sentences with the correct forms of the verbs in the box.3、4c Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.Step5：Explanation1、 at a low price2、 Somebody3、 all of a suddenStep6：:Exercises1、(2013.陕西)
4、The mobile phone has influenced peoples life a lot since it _.A. invents B. inventedC. is invented D. was invented2. (2013.上海) _ is waiting for you at the gate. He wants to say thanks to you. A. Somebody B. Anybody C. Everybody D. NobodyStep7:SummaryStep8:Homework1、 Review the passive voice in the past tense.2、 Learn to talk about the history of inventions with the passive voice in the simple past tense .