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Section A
invent→
Invention
Inventor
Works
(作品)
Do you know how to be an inventor?
invention/inventor
Invention
Inventor
Works
Usage
A: What is/are…used for?
B: It is/They are used for….
1. Invention
Invention : usage
A: What’s the lock made of?
B: It’s made of metal.
A: What’s it used for?
B: It’s used for locking the door.
lock/ metal
be made of : 由...制成
Invention : material
A: What’s the paper made from?
B: It’s made from wood.
A: What’s it used for?
B: It’s used for writing on.
paper/wood
be made from ... 由...制成
be made of 由某种物质做成(看得出原材料，物理过程)