hear. Between 1868 and 1870 he (work)3 with his father and (study)4speech and (teach)5thinking about sending tones by telegraph ,and it was then that there (come)7to his mind the idea of the harmonic telegraph, which would send musical tones electrically from one place to another. He (become)8interested in the mechanical production of a sound. In this way, sound (can)9be carried across wires at the speed of light. In 1876 he was able to develop the telephone, which enables people to talk to each other over long distances. In 1915 the first transcontinental telephone was opened. He (die)10 on August 2, 1922.
Worksheet 7
Rewrite these sentences in Passive Voice
Henry Ford inventedthe assembly linein 1903
Alexander Bell inventedthe telephonein 1876
John Logie Baird inventedcolour televisionin 1928
Alexander Fleming inventedpenicillinin 1928
Igor Sikorsky inventeda helicopterin 1909
Sergei Korolyov inventeda satellite Sputnik 1in 1957
John Walker inventedmatchesin 1827
Worksheet 8
To gather stickers with words and make up sentences
1)-Edison invented an electric light bulb.
2)- A helicopter was invented by Sikorsky.
3)-Korolyov invented the first satellite.
4) -A telephone was invented by A. Bell.
Worksheet 9
Match the names of inventors ahd their inventions.
Orville and Wilbur a plane
Edisona phonograph and projector
Benzthe automobile
Barida TV
Fulton a stemboad
Fordthe assembly line for cars
Worksheet 10
Ask questions
-Where / born?
-Where / study?
-What / most important invention?
- When / invent it?
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