请教取非问题

eric_xue79

很多NN在做逻辑的时候都会使用取非的方法来做选择，想问一下取非的原则是什么呢？例如下面一句，取非以后会是什么样的呢？

Money contributed by individuals who make their donations because provisions in the federal tax laws provides the only source of funding for many charitable and educational institutions.

另外想再请教“a pattern of cause and effect”怎么翻译？

jhiiool

取非：Money contributed by individuals who make their donations because provisions in the federal tax laws does not provide the only source of funding for many charitable and educational institutions.

a pattern of cause and effect：一种因果关系。

kenlily

但为什么取非不是在主句取呢？不是说 Money didn't contribute by individuals....

thinkers

因为那里不是主句啦。句子的谓语是provides。contributed by是定语修饰money的。

steveyangxt

1， 取非的位置要对， 一般都对主干部分取非。

2，绝对形容词的保留与否也是很关键的，但是一时举不出例子， 大家留意就是。