GWD-1-19

crazyep

Recently physicians have determined that stomach ulcers are not caused by stress, alcohol, or rich foods, but a bacterium that dwells in the mucous lining of the stomach.

not caused by stress, alcohol, or rich foods, but

not caused by stress, alcohol, or rich foods, but are by

caused not by stress, alcohol, or rich foods, but by

caused not by stress, alcohol, and rich foods, but

caused not by stress, alcohol, and rich foods, but are by

请教： A 错在哪里啊？

   are caused not by ....读起来很不顺啊。为什么选C？

bryan0806

bacterium 对称 stress , alcohol or rich foods

A 少 by 会有误会 且 not 的位置不对 重点不同

心晴

but后面的东西为了和not后面的对称，需要有by

asicschu

not ... but ... 要前後對稱唷!!

gigiga0118

B not caused by stress, alcohol, or rich foods, but are by

這個選項不可以解釋成

not caused by stress, alcohol, or rich foods, but are(caused) by......

這樣不挺平衡的嗎???????

Athyna

是啊,我也觉得B也可以啊...

难道要把not...but...的用法等同于not only...but also...的用法?

vivienluo

B若要省也是省略成为

are not cuased by ..., but caused by ....

所以只有C对,对称,简洁.

fann1230

介係詞平衡的條件之下，介係詞不能省略。

但是如果是不定詞的話，就可以省略。    e.g.   S+V+to V an (to) V......

清清小蚂蚁

同意7楼

baobaob

如果把B改成not caused by stress, alcohol, or rich foods, but  by对吗？也就是说not cause这样的说法对不对？

[此贴子已经被作者于2006-3-23 5:11:58编辑过]