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高中必修第三册英语《Unit 3 The world of science》最新说课课件PPT下载
2. Change sentences from the present perfect active into the
present perfect passive in the passage.
3. Try to use the present perfect passive in different contexts
properly.
invention
The New Age of Invention
Revise
advance
Para. 4
Para. 12
Find out sentences with the two words below.
The New Age of Invention
Revise
Find out sentences with the two words below.
invention
1. There have been golden ages of invention
throughout history.
2. Think of the four great inventions in ancient China:
gunpowder, papermaking, printing, and the compass.
3. Then there were the great western inventions: the steam engine, the telephone and the radio.
Para. 4
The New Age of Invention
Revise
Find out sentences with the two words below.
invention