There are some birds singing( )the trees
问题描述：
There are some birds singing( )the trees
答
on？
答
in 表示"存在在树上",on 表示"长在树上" ,所以这题应该填"in",举例：There are many apples （on） the trees.苹果是长在树上的，所以用(on) , 理解了吗？？？
答
birds singing on the tree, 如果是树本身的果实、树叶之类的才用 in
Keep trying!! good luck to you. ^_^
答
in
答
on the tree 果实一般是挂在树上,用介词on
in the tree 而鸟是在树中间,用介词in
答
There are some birds singing(in )the trees.
in the tree 在树上