prep2-61,what从句

rainbowmanutd

Researchers inGermany have unearthed 400,000-year-old wooden spears from what it appearswas an ancient lakeshore hunting ground as stunning evidence of human ancestorswho systematically hunted big game much earlier than believed.

(A) it appearswas an ancient lakeshore hunting ground as stunning evidence of human ancestorswho
(B) it appearshad been an ancient lakeshore hunting ground and is stunning evidence thathuman ancestors
(C) it appearsto have been an ancient lakeshore hunting ground and is stunning evidence thathuman ancestors
(D) appears tobe an ancient lakeshore hunting ground, stunning evidence that human ancestors
(E) appears thatit is an ancient lakeshore hunting ground, stunning evidence of human ancestorswho
选D,解释说A里面出线了what和it2个主语，以及appear和was两个宾语
但是100题：
The electronicscompany has unveiled what it claims to be the world's smallest networkdigital camcorder, the length of which is that of a handheld computer, and itweighs less than 11 ounces.


(A) to be theworld's smallest network digital camcorder, the length of which is that of ahandheld computer, and it weighs
(B) to be thesmallest network digital camcorder in the world, which is as long as a handheldcomputer, weighing

(C) is thesmallest network digital camcorder in the world, which is as long as a handheldcomputer, and it weighs
(D) is theworld's smallest network digital camcorder, which is as long as a handheldcomputer and weighs
(E) is theworld's smallest network digital camcorder, the length of which is that of ahandheld computer, weighing
选D,这里的what it claims怎么回事？it是什么成分？上一个题的呢？

rainbowmanutd

在两个从句中what的成分是不同的。
第一个句子中，what作主语。化简后为what appears。。。，是完整的主谓宾结构，不需要it。
第二个句子中，what作宾语。调整语序并化简后为 it claims what to be ，需要it作主语，指代company。

-- by 会员 chenjiao0121 (2011/7/1 11:25:06)

谢谢，但是怎么分辩what是做什么成分呀？是不是第二个unvailed后面没有宾语，所以what就是宾语，第一个动词后面又宾语，需要的是一个地点，what就做了介绍这个地点的主语？

perain

贴一段prep笔记中提到的内容，可以解释lz的第二个问题：


“有一种关系分句（即定语从句），它既是先行项的后置修饰语（即定语），同时又是另外一个分句结构的宾语（即宾语从句）”此分句结构就被嵌入在定语从句中，即嵌入式关系分句。
   该书举例：In his breast-pocket he had a patch of scarlet, which i suppose was the paper cap serving as a handkerchief.
注意两点：
1）从句which was the paper cap serving as a handkerchief 首先是 patch of scarlet的定语从句。        
2）从句which（patch of scarlet） was the paper cap serving as a handkerchief 也是i suppose 的宾语从句，即I suppose （that）the patch of scarlet was the paper cap serving as a handkerchief 。
综上所述，当一个定语从句同时是另一个主谓结构的宾语从句是，就可以写为嵌入式关系分句。

chenjiao0121

在两个从句中what的成分是不同的。
第一个句子中，what作主语。化简后为what appears。。。，是完整的主谓宾结构，不需要it。
第二个句子中，what作宾语。调整语序并化简后为 it claims what to be ，需要it作主语，指代company。