impact,affect的辨别？

Impact和affect都有"影响"的意思,不过一般impact最常用的意思是撞击.Affect最常用的意思才是影响.

impact1

n.
1. 冲击,撞击,碰撞[U]
The impact of the stone against the windowpane shattered the glass.
石头撞击窗户打碎了玻璃。
2. 冲击力,撞击力[U]
3. 影响;作用[S1][(+on)]
The book made a great impact on its readers.
这本书对读者有很大的影响。
impact2

vt.
1. 压紧;挤满
The war impacted the area with refugees.
战争使那个地区挤满难民。
2. 冲击,撞击,碰撞
3. 对...产生影响
vi.
1. 冲击,撞击,碰撞
2. 产生影响[(+on)]
It is obvious how bad movies will impact on children.
坏电影对儿童会产生什么影响是显而易见的。

affect1

vt.
1. 影响;对...发生作用
The amount of rain affects the growth of crops.
雨量影响作物的生长。
2. 使感动,使震动
She was deeply affected by the news of her father's death.
她父亲去世的消息使她深受震动。
3. (病)侵袭;罹患
Her kidneys had become affected.
她的肾脏受到了感染。
affect2

vt.
1. 假装,装作[+to-v]
He affected not to see her.
他假装没看见她。