假设题如何取非

jandjshi

全称肯定 (Everybody Did) 和特称否定(Somebody Did NOT)是矛盾关系

全称否定(Everybody did NOT=nobody did) 和特称肯定(Somebody did)是矛盾关系。

at least some wealthy individuals would not donate 取非为 every wealthy individual would donate. 

sabrina07

ding!

fengyun1

好好的研究了一把。值得收藏。

wangjianxiu

thank you 爱你们

水里游

up

shuiyueyou

头晕了~~

pumpkinhuo

以下是引用lawyer_1在2004-11-4 4:30:00的发言：

取非意思就是假如某个选项是错的。

大体有三种情况：

1. all----not all/some---none/always----not always/sometimes----never/everywhere---not everywhere/somewhere---nowhere/only one, exactly one---none, more than one/at least one, some---none

2.对于选项为条件句，将必要条件取非。

3。直接将谓语肯定变否定，或否定变肯定

请教：黄线部分不明白什么意思。。

only one, exactly one 中间的逗号是什么意思。。。

yuromeo

支持一下

icefiremin

取非意思就是假如某个选项是错的。
大体有三种情况：
1. all----not all/some---none/always----not always/sometimes----never/everywhere---not everywhere/somewhere---nowhere/only one, exactly one---none, more than one/at least one, some---none

有个疑问，是不是取非有时也有两种结果？比如：

some---none或all

sometimes---never或always

everywhere---not everywhere或nowhere

somewhere---nowhere或everywhere

finvina

取非意思就是假如某个选项是错的。
大体有三种情况：
1. all----not all/some---none/always----not always/sometimes----never/everywhere---not everywhere/somewhere---nowhere/only one, exactly one---none, more than one/at least one, some---none

有个疑问，是不是取非有时也有两种结果？比如：

some---none或all

sometimes---never或always

everywhere---not everywhere或nowhere

somewhere---nowhere或everywhere

-- by 会员 icefiremin (2010/1/15 21:57:54)

我觉得不是你说的这样。
取非应该就是只有一种结果。1. all----not all/some---none/always----not always/sometimes----never/everywhere---not everywhere/somewhere---nowhere/only one, exactly one---none, more than one/at least one, some---none

但是，如果句子是 some...not ，那取非后就是none...not，即是all
你说的其他各项就是：
some...not--->none...not=all

sometimes...not--->never...not=always

everywhere...not--->not everywhere...not=nowhere

somewhere...not--->nowhere...not=everywhere