GWD 1-19

squirrel_hippo

Q19:
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.？？

A. not caused by stress, alcohol, or rich foods, but
B. not caused by stress, alcohol, or rich foods, but are by
C. caused not by stress, alcohol, or rich foods, but by
D. caused not by stress, alcohol, and rich foods, but
E. caused not by stress, alcohol, and rich foods, but are by

请问这个caused not by，可不可以写成not caused by 呢？？我总觉得 caused not by 挺别扭的啊？不过别的也没的可选了。请指教。谢谢！

tuzq

not... but...对称

squirrel_hippo

以下是引用tuzq在2005-4-1 20:10:00的发言：
not... but...对称

可是not放在前边我还是觉得挺对称的。不过没有这么个选项

bobwangwb

not by， but by.    ---- "not" modifies  " by"

" not caused by" -----"not"  modifies  " caused'

[此贴子已经被作者于2005-4-2 12:29:30编辑过]

squirrel_hippo

以下是引用bobwangwb在2005-4-2 12:29:00的发言：

not by， but by.    ---- "not" modifies  " by"

" not caused by" -----"not"  modifies  " caused'

明白了，多谢