Unit 9 When was it invented
Section A (1a-1c)A computer is an invention
Edison invented the light bulb invention n
发明物inventor n
发明家invent v
发明Edisonlight bulbThe light bulb was invented by Edison
1879年 They’re all inventions
They were invented by inventors
A trainA carA planeA shipA bicyclecalculator 计算器carTVtelephoneinventionscomputerA: I think the calculator was invented before the computer
B: Well, I think the calculator was invented after the computer
Which was invented first, the calculator or the computer
1bListen and match the inventions Listen and match the inventions with the dates
with the dates
abedc18761885192719711976dabecThe TV was invented in 1927
The TV was invented in 1927
A: When was the _______ invented
B: I think it was invented in ______
A: When was the _______ i