《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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