《When was it invented?》PPT课件22

Section A Period One

It was made by Bell at first .贝尔（人名）

It used to be like this 

It is used for watching programs.(节目）[ˈprəʊgræm] 

It was made of steel and iron [ˈaɪən] 铁

Practice the sentences.

Picture d: The telephone was invented 

in eighteen seventy-six(1876).

Picture a: Cars were invented in 

eighteen eighty-five(1885).

Picture c: The TV was invented around 

nineteen twenty-seven(1927).

Picture b: The personal computers 

were invented in nineteen seventy-six(1976).

... ... ...

Summaries 

modern inventions   现代发明

be invented in  在某年、某地发明

need to  需要做某事

take a history class  上历史课

couldn’t afford one  买不起

in those days  在过去

personal computers  个人电脑

《When was it invented?》SectionD MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。

《When was it invented?》SectionC MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。

《When was it invented?》SectionB MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。