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Lead in
plant
— What’s this in English?
— It’s a / an …
schoolbags
books
keys
baseballs
A: What are these?
B: They’re ….
w
under 在······下
in 在······里
on 在······上
in / on / under
The ball is on the box.
The ball is under the box.
The ball is in the box.
Where where where
Where is the ball?
on on on
It's on the chair.
Let's chant
Where where where
Where is the ball ?
under under under
It's under the desk.
Let's chant
Where where where
Where is the ball ?