18. Each of Hemingway's wives--Hadley Richardson. Pauline Pfeiffer. Martha Gelhom. and Mary Welsh --were strong and interesting women, very different from the often pallid women who populate his novels.

(A) Each of Hemingway's wives--Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--were strong and interest­ing women,

(B) Hadley Richardson, Pauline Pfeiffer, Martha Gelhorn, and Mary Welsh--each of them Hemingway's wives--were strong and, interesting women,

(C) Hemingway's wives--Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--were all strong and interesting women,

(D) Strong and interesting women—Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--each a wife of Hemingway, was

(E) Strong and interesting women—Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--every one of Hemingway's wives were

D中的—each a wife of Hemingway是什么成份？each a wife of Hemingway是什么结构？each和a wife中间是不是省略了was，或者a wife是each的同位语？each是什么词性？was的主语为什么不是each或者a wife？是不是因为有个“，”如果把“，”去掉，像E一样，是不是was的主语就不是strong and interesting women了？

each a wife of Hemingway 应该改为each of H's wife, 是strong and interesting women的补充说明成分，was的主语应该是women，因为“—”后的为补语成分，其作用是举例说明

不能去掉逗号，否则为run-on sentence

那这么说E也是run-on sentence？可是OG解释中并没有提到啊？

还有，到底什么叫run-on sentence？

谢谢啦！！

 When a sentence consists of more than one clause, those clauses must be joined properly. It is never acceptable to hook two clauses together with a comma, as the "sentence" below does. That's called a run on sentence.

连写句：（错用逗号等）使两个或多个独立从句不正确地连在一起的句子

按这个标准E不属于run-on,E的错误在于subject-verb agreement,主语every one和谓语were不一致

我觉得D中因为was前面有逗号，所以—Hadley Richardson, Pauline Pfeiffer,

Martha Gelhom, and Mary Welsh--each a wife of Hemingway都是修饰Strong and

interesting women，women作主语；而E中因为were前面没有逗号，所以Strong and

interesting women—Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and

Mary Welsh--修饰every one of Hemingway's wives，every one作主语。我这样的理解

对吗？

而且，我觉得D如果把逗号去掉，就跟E一样了，没有run-on sentence

请指教