Have the effect on和Have an effect on有什么区别?

Have the effect on和Have an effect on有什么区别? have effect on 和have a effect on 以及have an effect on take effect和give effect to的区别eg：The new system of taxation will___next May.A.in effect B.take effect C.have an effect on D.give effect to have an effect on 翻译：That can have an improtant effect on the children. What effect does the frontier experience have on Americans? money does have its good effect on the poor 是have an effect on 还是have effect on? have an effect upon与have an effect on区别 have a effect on与have a effect towards 区别 请问have an effect on 和have a influence on的区别 have a impact on 和have an effect on用法上有什么区别? People often underestimate the effect exercise can have on mental acuity.是否倒装句?People often underestimate the effect exercise can have on mental acuity.是否是 have an effect on...的倒装句? have effect on 中 effect 有单复数吗? the weight of the effect I would have on him请翻译 What effect would the proposed investment have on the firm`s stockholders have an effect on怎么造句 have an effect on 的意思