用作定语
▲～+n.
It was a fruitful meeting, we made a lot of important decisions.这是一次很有成效的会议,我们作出了许多重大决定。
He is really a fruitful novelist.他真是一位多产的小说家。
用作表语
▲S+be+～
These trees are fruitful.这些树果实累累。
▲S+be+～+prep.-phrase
Russia is fruitful in natural resources.俄罗斯自然资源丰富。
Newton's laws were fruitful for the future development of science.牛顿定律对其后的科学发展起了很大作用。
