a boy ,he often asked_ (ask)all kinds of strange questions,so the teacher didn´t like him.Then his mother taught_______(teach)him by _herself______(she)at home.Edison was very interested ________ (interest)in books.At last,he became a great ___ inventor____(invent).He _ invented ______(invent)more than 1,000 things.He was one of the greatest __ inventors_______( invent) in the world.

大屏幕出示爱迪生发明的系列图片让同学们欣赏，激发学生热爱发明的情感。

Ⅱ. Presentation

　引导学生看更多的发明图片，并分组讨论Which one do you think is the most helpful invention in our daily life? 培养学生善于观察事物的能力。激发学生的想象力，认识世界，改造世界。

Ⅲ. New lesson

1. 1a小组讨论

出示1a的一组图片，小组讨论这些发明哪个在前，哪个在后，并排序，初步熟悉一般过去时被动语态

的表达结构主语 + was / were + 过去分词。最后教师给出答案。

2．1b.

播放录音，然后做1b听力练习,通过听力材料让学生进一步熟悉一般过去时被动语态的句式表达：肯定、否定以及单复数的区别。

3.1c Pairwork.

根据1b的对话讨论1b的发明。使学生熟练掌握下列对话：

A:When was the ... invented ?

　　　B:I think it was invented in ...，从而掌握When引导的特殊疑问句。

4. Exercises.

针对以上的学习，让学生做Exercise1和Exercise 2，练习比较简单，主要是考查学生的单词运用能力和句型转换能力。答案：useful， inventions， inventors， was，

Invented， was invented， When was， invented，invented ，Who,were，invented by, don´t, was, written,

by.

5.小结：

练习后让学生自己总结一般过去时被动语态句型结构：主语 + was / were + 过去分词(+ by + 动 作执行者)构成。再完成Exercise 3翻译练习,进一步巩固被动语态，并提醒使用被动语态时常与一些表过去的时间状语连用，注意语境。如果学生不能总结出第二点，教师启发学生我们还学到了爱迪生以及他的发明生平事迹。