原题是这样的:
17. Sunspots, vorticesof gas associated with strong electromagnetic activity, are visible asdark spots on the surface of the Sun but have never been sighted on theSun’spoles or equator. (A) are visible as dark spots on the surface of the Sun but have never been sighted on (B) are visible as dark spots that never have been sighted on the surface of the Sun (C) appear on the surface of the Sun as dark spots although never sighted at (D) appear as dark spots on the surface of the Sun,although never having been sighted at (E) appear as dark spots on the Sun’s surface, which have never been sighted on
答案是A
我的疑问在于
1:OG的解释说visible和past participle:sighted平行 但是past participle在曼哈顿里不是说是做形容词性质的嘛?这里面就是组成被动的形式吧,为什么就平行了呢?
2:有NN说C里although引导是是状语从句,请问怎么判断是状语从句呢?因为although前面没有逗号嘛?D选项的although就不是状语从句了吗?
3. 为什么没有人讨论是用at poles还是on poles呢?两个都可以嘛?
4. OG是although后面要加句子,但是ron说不一定的,比如james,although bigger than many of the other players, is one of the fastest men on the team。所以以后碰到although到底要怎么办呢?
5. 我不是很明白D选项除了although后面应该接句子 别的还有什么问题嘛?比如never having been sighted有什么问题吗?可以按时逻辑主语就是sunspots嘛?
关于although,but语义的不同我是理解的 只是还有这些小点在困扰着我
多谢各位!!! |