PREP 07 90. (29431-!-item-!-188;#058&003914) 求救求救！！！

刘小谁

Archaeologists in Egypt have excavated a 5,000-year-old wooden hull that is the earliest surviving example of a "built" boat--in other words, a boat constructed out of planks fitted together--and that thus represents a major advance, in terms of boat-building technology, over the dugout logs and reed vessels of more ancient vintage.

(A) together--and that thus represents
(B) together--and this has represented
(C) together, and it represents
(D) together that was representing
(E) together to represent


问题是：我看到语法笔记上写B选项一个错因是说，“this单独做主语”，然后也看过好多说“this/it/that不能单独做主语，必须加上名词才能做主语”，但那时这里面作为正确选项的A中，that不是也单独作主语了么？？
一直搞不清这个问题...求大侠们解救....T^T

刘小谁

自己顶一下！！

鱼winwin

that可以做单独主语
是说this,these是adj，要加上名词才行

suntz1990

后面的那个that和前面的that is the earliest surviving example ……中的that做并列结构，都是old wooden hull 定语从句中先行词，这种题主要是看并列结构的关系。

刘小谁

that可以做单独主语
是说this,these是adj，要加上名词才行

-- by 会员 鱼winwin (2012/3/14 12:50:53)

那this和it呢？？

刘小谁

后面的那个that和前面的that is the earliest surviving example ……中的that做并列结构，都是old wooden hull 定语从句中先行词，这种题主要是看并列结构的关系。

-- by 会员 suntz1990 (2012/3/14 14:10:59)

那that在它所引导的定语从句中是主语么？？this/these/those不能单独作主语 怎么区分呢？

甜蜜小乌龟

这里的that不是单独作主语哦 而是跟前面的that it is the earliest作为并列结构的 that在这里是个连词  而且我觉得that 不能单独做主语的吧