on the top of 和on top of的区别

on the top of 是指在具体物体的顶部
如：
The pagoda stands alone on the top of the hill.
那宝塔孤零零地坐落在山顶上.
The skin exactly on the top of my head pains.
我头上正好位于头顶的那块皮肤很痛.
而 on top of 即可以表示在有形的物体上方,也可以表示不具体的某事物的顶端,而且还具有其它的意思.如
There is a bird on top of the house
房子顶上有只鸟.
I am on top of the world.
我高兴到了极点.
This work is getting on top of me.
这件工作我无法胜任了.
On top of this, several other benefits are being offered.
除此以外,其它几项好处正在出现