affect 动词
举例：He affected me.(他影响了我。)
effect 名词
举例：Politicians really do have some effect on the lives of ordinary people.（政客们对老百姓的生活的确有影响。）
impact 名词
举例：Our regional measures have had a significant impact on unemployment.（我们地区的措施对失业有重大影响。）
affect
英 [əˈfɛkt]美 [əˈfɛkt]
v.
影响；对…有影响，对…起作用；打动（某人）；感动；（疾病）侵袭，感染；假装。
n.
【心理学】（尤指影响行为或行动的）情感，感情，渴望。
双语例句
Staying away so long from office will affect promotion.
长期离职会影响晋级。
Don't get chewed up about the new law;it won't affect you.
别为新法律焦虑不安，它不会影响你的。
They do, however, greatly affect the implementation of those patterns.
然而，它们的确对那些模式的 实现影响很大。
effect
英 [ɪ'fekt] 美 [ɪ'fɛkt]
n. 影响；效果；作用
vt. 产生；达到目的
双语例句
Overacting will only spoil the effect.
表演过火， 效果反而不好。
The scientists doing the experiment have pounced on the effect of the particular moment.
做实验的科学家们抓住了这个特殊时机的效果。
The playwright does something remarkable in this scene, but without any impression of strainingafter an effect.
剧作家在这场中有许多惊人妙笔，但并不给人留下竭力追求表面效果的印象。
impact
英 ['ɪmpækt] 美 [ɪm'pækt]
n. 影响；效果；碰撞；冲击力
vt. 挤入，压紧；撞击；对…产生影响
vi. 影响；撞击；冲突；压紧（on，upon，with）
双语例句
The impact dented our car's fender.
碰撞把我们汽车挡泥板给撞凹下去了。
I want us to be judged by the impact we have on the health of the people of Africa, and thehealth of women.
特别是两组特别人群组。 我希望以我们对非洲人民的健康，对妇女健康产生的影响来评价我们的工作。
But I also think that if they abolished it today, it would have no impact.
但是我也认为如果他们今天废除了它，也不会带来任何影响。