《When was it invented?》PPT课件22

《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

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