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T: When and where was is it invented？
Ss: It was invented in …
T: What is it used for？
Ss: It’s used for …
2. . . . （学生问答形式———老师：As we know, the MP3 player was invented in Korea in 1998, and it’s used for listening to music. Right ? OK .Let’s look at these inventions, please one to talk about.
3. S1 . . . 4 S2 …
二．示图（快速闪过—light bulb）导入 1a.
T：Can you see what it is？
Ss :It’s a . . .
T: That’s right ，it’s a bulb，and Michael and Jane are talking about it.Look at the picture，Where are they talking ？What else are they talking about ? Let’s listen to the tape and choose the answers.（播音1次，听1a完成1b，核对答案,）
T: Now we know they are in the science museum. and they are talking about some inventions and inventors. OK，Let’s listen again and find out When were the inventions invented？ and who invented thern？Write down the answers with the complete sentences.
三．学生齐读1a后完成1c.（边对答案边用被动语态说出答案：The light bulb was invented by …再听1a 2次回答问题→个别生答→核对→齐读答案）
四．根据1c表格内容，展示1c重点（板书）
一般过去时的被动语态。（点出重难点→一般过去时的被动语态的结构与用法）.
From the table above，When was the bulb invented？. . .
（示图操练1a重点句型：一般过去时的被动语态句型。练完bulb，示图练）
e. g —A：When was the bulb invented？
B：It was invented in 1879.
—A: The radio was invented(invent)by Guglielmo Marconi in 1895.
—A：Who invented the airplane？
B：It was invented by Wilbur and Orville Wright.
—T：One more sentence, For example：Today …is on duty， and he/she cleaned
the classroom this morning. Can you use the Passive Voice to change the
sentence？
Ss：The classroom was cleaned by …this morning.
五．根据1c，操纵1d（知识的拓展）：
分小组讨论1c.—小组代表发音（如例）→其他小组抢答.（3组发音）
六．练习巩固
1、P84 2
2、用所给中文完成下列句子，注意动词的适当形式。