前面用介词in或者on,例如:

1、The boys carved their names in the tree.男孩子们把名字刻在树上。

2、The woodpecker pecked a hole in the tree.啄木鸟在树上啄了一个洞。

3、We followed the marks he had made on the tree trunks.我们按他在树干上做的记号往前走。

the tree前用什么介词

in the tree 在树上,表示落在树上,如:A bird is singing in the tree.

on the tree 在树上,表示树上生长的,如:The apples on the tree are very big.