I can see some apples ___the tree,some birds are__ it too.A in on B on in 选择哪个?为什么?

问题描述:

I can see some apples ___the tree,some birds are__ it too.
A in on B on in 选择哪个?为什么?

B,表示树上本身就附有的东西,用on the tree,如果实.而表示某种物体在树上时(本身不属于树),用in the tree,例如小鸟
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