not..but..的用法 prep73 prep76

tianyi_2003

以下是引用goyce36在2008-9-29 21:00:00的发言：

先谢谢tianyi，(别这么客气，一起讨论撒！）但是你说的我不同意。首先，你举的OG的例子，我认为是not..but..句型。原因是这里应该是did spring和evolved平行，两者都是过去时，只不过我们不能说not did spring but evolved,因此，这是符合平行原则的（两个过去式平行）

but和not...but都是转折的用法，逻辑上来区别区别不出来的。也就可以说前面如果有助系动词+not否定有可能是but用法，你不能排除be和do并列的可能性，仅此而已不必想复杂了

其次，73题是典型的不是而是题，和普通的but转折句有很明显的意思不同。（你再感觉一下）如果按你说的系动词不能和实意动词平行，就没法解释了。

同上

76题，我不同意consisted是形容词的说法，应该是过去分词，和continuous共用一个was.

consisted 如果是过去分词，那么was 是助动词而 was continuous的was是系动词，如果平行不能把后一个was 省略。你这个理解恐怕不对的，这里consisted应该动词过去式。

例子： I like a person not Tom but you - not...but 用法

            I am not a hot girl but like spicy girl   but用法

欢迎讨论啊！

[此贴子已经被作者于2008-9-30 0:49:13编辑过]

AlienX

過去分詞**有時候**可作形容詞.
如果consisted不是作形容詞, 那麼
the noise was not continuous but consisted of individual bursts or pops just thousandths of a second long.
應該改為
the noise was not continuous but was consisted of individual bursts or pops just thousandths of a second long.
Handbook of Good English上有提過這種錯誤...跟11th floor提的一樣
可是GMAT常有它自己的看法...
歡迎討論...

JorieSong

以下是引用tianyi_2003在2008-9-29 0:08:00的发言：

归结到but 和 not...but的用法区别，满麻烦的，先看个2例子吧

1.The voluminous personal papers of Thomas Alva Edison reaveal that his inventions typically did not spring to life in a flash of insperation but evolved slowly from previous works.

not 后面是 spring而but 后面是evolved，时态不一致，按照not...but的平行是不可以的，原因是这里是,,,but的用法

2.The plan cause not prosperity but ruin

not后面和but后面是肯定平行的，不论从形式和时态，因为此处是not...but的用法（注意not...but中系动词和实义动词是不能平行的）

看完例题，开始说两者的区别，最大也是最容易区分的区别就是助动词，如果前面是一个否定，那么助动词后不可避免出现not（当然我们不可能为了平行将助动词放在not后面），注意，此处可能并不是一个not...but的并列而是but并列两个动词，此处当然be和实义动词按照平行法则可以平行

你的两个例子无一例外是助动词+not的形式，是but的平行用法，也就是说，你完全可以把否定拿掉，观察平行

73. the human mind is （not） a "blank slate"but instead comprises specialized mental mechanisms that were developed to solve

76.digitizing and analyzing the sound emissions on computers, a team of scientists found that the noise was （not） continuous but consisted of

简单说，就是but平行用法前面出现否定。 

至于instead,副词可以完全无视，至于consisted是形容词，这绝对是...

为了更好地理解，给你两个not...but 用法看看：

prep1-59.   A new genetically engineered papaya was produced not by seed companies who have been motivated by profit, which was the case with most genetically modified crops previously approved for commercial use, but university and United States Department of Agriculture researchers who allowed growers to use it free of charge.

(A) produced not by seed companies who have been motivated by profit, which was the case with most genetically modified crops previously approved for commercial use, but

(B) produced not by profit-motivated seed companies, the case with most genetically modified crops previously approved for commercial use, but

(C) produced not by profit-motivated seed companies, as was the case with most genetically modified crops previously approved for commercial use, but by

(D) not produced by profit-motivated seed companies, which was the case with most genetically modified crops previously approved for commercial use, but was produced by

(E) not produced by seed companies who have been motivated by profit, the case with most genetically modified crops previously approved for commercial use, but by

很漂亮的not + 介词.. but +介词平行，而不是but平行前面否定（很容易看出来），打得我好累啊，希望你懂了，还希望大家泼水讨论！

谢谢指点：原来都在于 be 动词和 not 的特殊位置关系。 把 not...but...看成是一个前带否定的 but 并列也是一个很好的建议。 受益匪浅！

[此贴子已经被作者于2008-10-3 16:07:29编辑过]

goyce36

谢谢，我也受益匪浅。

谢谢提醒了我be 省略的问题，我当时没想到啊~

jonathan1987

12楼提醒我了!

顶

[此贴子已经被作者于2008-11-13 11:40:47编辑过]

rpch2004

以下是引用小齐在2008-9-29 21:16:00的发言：

73：the human mind is not
  a "blank slate"
  but instead
  comprises

not 位于助动词，系动词，或情态动词后，可以把not..but..看作是一个普通的否定副词not +并列连词but 

此时不是一个固定词组，该句没有强调平行对等，所以是两个独立的单词 

此理论成立否？

[此贴子已经被作者于2008-10-25 16:50:11编辑过]

xsyxxgjj

consisted 不是 用来表示被动的，只是过去时态而已。

consist of sth (a) be composed or made up of sth 由某事物组成或构成: The committee consists of ten members. 委员会由十人组成. * a mixture consisting of flour and water 面粉和水的混合物.--oxford 高阶

xsyxxgjj

还有，B选项的were怎么解释？

smartsky11

分数

jean1280

up