OG11第90题

pilgrim

The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as “standing waves.”

B crests and troughs that remain stationary although they are formed by rapidly moving air, are

C crests and troughs that remain stationary although the air that forms them is moving rapidly, is

D stationary crests and troughs although the air that forms them is moving rapidly, are

E stationary crests and troughs although they are formed by rapidly moving air, is

E为什么不对呢，看这也可以阿

忘记贴正确答案了，答案是c

[此贴子已经被作者于2007-10-13 18:55:23编辑过]

Pinpinpink

E里面with stationary crests and troughs 是一个短语，although they are formed by rapidly moving air是一个分句，怎么能有这种结构呢？although引导的这个从句好歹也得要个主句吧！

pilgrim

但是正确答案中也是有个although从句

pilgrim

捉摸着是不是因为although后面被动不如主动语态来的简洁明了，但这个理由会不会不够充分，毕竟E没有什么错误阿

pilgrim

看到解释了：

从句子的结构上讲就是WITH+名词（CRESTS AND TROUGHS）而后面是THAT引到的是一个定语从句，修饰CRESTS AND TROUGHS，而在这个从句中又有一个 用ALTHOUGH连接的转折分句。