語言千奇百怪,，實(shí)在不好找規(guī)律
influence 常作不可數(shù),，有時(shí)可數(shù),，表示某種影響
張道真慣用法大辭典 710

has great influence on/upon/over sb.
has a curious influence over sb.
has a great influence on one's behavior

effect 400 on/upon
可數(shù)時(shí)
had a bad effect upon him.
had a great effect upon his future
has a misleading effect on you.
不可數(shù)時(shí)
had no effect on her,
have any effect

has power over sb. 1047