-When was the telephone invented?

　　 -I think it was invented in 1876.

2. 教学难点：

1）Invent的各种词性、词形及用法

2）被动语态的结构及用法-Who was it invented by ?

　　　句子中的by造句时容易忽略。

3）运用一般过去时态的被动语态来讨论发明的发明时间及人物。

三、教学过程

I. Warming up

值日生到前面展示对话，谈论身边的事物,它们是由什么制成的。

A:Hello! Danny!

B:Hello!Kate!Whhere are you going?

A:I just came back from an art fair.

B:Really? Did you see anything cool?

A:Of course! All the works there were made by students.Look! This is a shoe.

B: How beautiful! What is it made of?

A:It´s made of paper.We can use it as a pencil-box. Do you like it?

B:Yes!

A:Here you are.

B:Thank you! And what´s that?

A:Oh,it´s a man made star.

B:What is it made of?

A:It´s made of grass,real grass.

B:The fair is about environmental protection and recyling,right?

A: Yeah! And the students came up with some really interesting and creative ideas.

接着教师向学生展示灯泡，进行下列对话：

T:what´this？

S:It´s a light bulb.

T:What´s it made of?

S:It´s made of glass.

T:Do you know who invented it?

S:I don´t know./I know.Edison.

然后教师出示大发明家爱迪生的图片，并作简单介绍。爱迪生简介：

做下列填空练习：Thomas Edison _was_____ _born_____ (出生) in ...... When he was