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介词：表示物品的位置
它在盒子里面.
Where is the mouse?
老鼠在哪里？
It’s the chair.
on
Where is the mouse?
它在椅子上面 .
It’s the desk.
under
Where is the mouse?
它在桌子下面 .
It’s the window.
behind
Where is the budgie ?
它在窗后面.
It’s the blackboard.
in front of
Where is the mouse?
它在黑板前面。
Where is my cat ?
It’s on the chair.
Where is the black cat ?
It’s in the green schoolbag.
Where is my cat ?
It’s under the desk.
Where is my little cat ?
It’s behind the door.
Where is the white cat?