1 in the tree 一般指外來的東西在樹上,不是樹本身所有,如貓、猴、鳥等在樹上。
He saw a cat in the tree. 他看見樹上有一只貓。
Jack is in the tree . He can't get down. 杰克在樹上,他下不來了。
2 on the tree 通常指樹本身長出的東西,如枝、葉、花、果等。
There are many apples on the tree . 樹上有許多蘋果。
She's picking oranges on that tree . 她在摘那棵樹上的橘子。