标题: OG81 关于"，but“后加完整主谓结构的问题 [打印本页] 作者: 浅浅123 时间: 2012-3-9 17:44 标题: OG81 关于"，but“后加完整主谓结构的问题 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 印象中“，and”“，but"后面都要加完整的主谓结构，但在这题中却出现了例外，请NN指点~作者: 浅浅123 时间: 2012-3-9 17:45
答案为C作者: 幸运E枪兵 时间: 2012-3-9 19:47
not...but...结构需要对称的