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A: What’s it used for?
B: It’s used for locking the door.
n.锁 v.（用锁）锁上，被锁住
2 Follow the example to make up similar conversations.
lock/metal
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
1
2
be used for 被用来做......
be made of 看得出原材料(物理变化）
be made from 看不出原材料（化学变化）
computer desk /wood
chopsticks/bamboo
wine / grapes
watch/metal
A: What’s the computer desk made of?
B: It’s made of wood.
A: What’s it used for?
B: It’s used for holding a computer.
computer desk /wood
A: What are the chopsticks made of?
B: They are made of bamboo.
A: What are they used for?
B: They are used for eating with
chopsticks/bamboo
A: What’s the wine made from?