1. 表示影响，有以下两种用法：
①表示一般性的影响：
Their opinion will notaffect my decision. 他们的意见不会影响我的决定。
Does thischange affect your plans? 这样一改不会影响你的计划吧?
②表示对...产生不良影响：
Smoking affects health. 吸烟影响健康。
The noise from the street affected our work. 街上的嘈杂声影响了我们的工作。
2. 表示感动、感伤：
The sight affected her totears. 此情此景使她感动得流泪。
His death affected us deeply. 他的死使我们很感伤。
3. 区别 affect 与 effect：
①affect通常只用作动词，而不用作名词。
②effect 通常只用作名词 ，且主要用于have an effect 这类结构;有时虽用作动词，但不表示影响，而表示实现或产生等，且通常以改进、变化之类的词作宾语。
③表示影响时，affect=have an effect on：
To affect apolicy is to have an effect on it. 影响一项政策就是对该政策具有一种影响。
The news did not affect her at all. = Thenews had no effect on her at all. 这条消息对她没有一点影响。
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