ADV-GRADED
非常地；极大地
You use greatly to emphasize the degree or extent of something.
例句
People would benefit greatly from a pollution-free vehicle...
人们将享受到无污染汽车的诸多好处。
We were greatly honoured that Sheik Hasina took the trouble to visit us.
谢赫·哈西娜专程前来看望我们，对此我们深感荣幸。