作者: gabrielpei 时间: 2013-4-8 22:36
对于问题3, 找了Lawyer总结的条件指示词的帖子: http://forum.chasedream.com/thread-73506-1-1.html 里面的分析很牛!!解释了条件题和因果题的区别.
Ring_Cheng的关于until/not until的解释也超级到位, 解决了我不少问题.
not A, until B: A—>B (The party won’t start until everyone is here.)
A, until B: ~A—>B / ~B—>A (The party will go on until everyone leaves.)
关于In order to的两种情况的解释参加这个帖子 http://forum.chasedream.com/thread-28032-1-1.html
4.特例:the only way to achieve success is to work hard. achieve success(充分条件)
only a professional consultant can solve the organization’s problems. a professional consultant(必要条件)
no citizen can be denied the right to vote. denied the right to vote(充分条件). no citizen(必要条件) 作者: gabrielpei 时间: 2013-4-8 22:43
关于问题1的取非, 还是Lawyer大拿的精华帖. 其中第2点, 应该是比较关键的部分.
假设题如何取非
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