人教版九年级英语上册《When was it invented?》SectionA PPT教学课件(第1课时)，共28页。
Revision
What are they?
They are sky lanterns.
What are they made of?
They are made of bamboo and paper.
Who invented sky lanterns?
Zhuge Kongming invented them.
Pairwork
A: When was the …invented?
B: It was invented in …
A: Who was it invented by?
B: It was invented by…?
A: Do you know what it is used for?
B: It is used for ...
The special slippers were invented by a lazy man. They are used for cleaning the floor.
This special hat was invented by Susan. It has many colors and is used for taking photos. It can take a photo of you by yourself.
This small air fan was invented by Tom. It is used for cooling the hot food. It runs on electricity.
Summary
What have you learnt?
1.句型When was ... invented?
和I think it was invented in ....的运用。
2. 能学会年份的读法。
3.了解发明物的重要性。
......
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