请教大全885 section20-9

ecsniffer

9.Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.
(A) year, and they cost the nation $50 billion in medical expenses and lost
(B) year and thus cost the nation $50 billion in medical expenses and lost
(C) year, so as to cost the nation $50 billion in medical expenses and lost
(D) year that costs the nation $50 billion in lost medical expenses and
(E) year, which thus cost the nation $50 billion in lost medical expenses and
the key:B.这道题的结构到底是怎么样的？难道是象下面这样的么？
Migraine afflicts perhaps 18 million Americans and thus cost the nation $50 billion in medical expenses and lost work time.
为什么一般现在时和一般过去时并列在一块使用？怪怪的？干嘛不都用一般现在时，弄出个lost怪讨厌的。

bluestone1

Migraine afflicts perhaps 18 million Americans and thus cost the nation $50 billion in (medical expenses and lost work time).

bluestone1

不对，应是
Americans collectively lose 64 million workdays a year and thus cost the nation $50 billion in ( medical expenses and lost work time).

ecsniffer

yeah,you are right.thk.
原来lost 在这里做adj.！
how foolish I am!

Snazzy

NO DICE, ecsniffer, u r not foolish at all.  and i don't agree with bluestone. the explanation is not logical. It is not the american that cost the nation $..., but the migraine. so choice B is absolutely wrong.

ecsniffer

Snazzy,thk！
你说的有道理，的确我也没有看到过sb. cost----的结构，那么这道题怎么回事呢？谁再给讲讲，谢谢！

bluestone1

这题我选B时也颇犹豫，但矮子里拔将军就选了，毕竟 sb cost 也不是完全说不过去
最后使我下决心的是  cost 应是 a year, 只有与 lose 64 million workdays a year 平行才能省略
a year.

horsefish

以下是引用Snazzy在2003-12-8 13:32:00的发言：
NO DICE, ecsniffer, u r not foolish at all.  and i don't agree with bluestone. the explanation is not logical. It is not the american that cost the nation $..., but the migraine. so choice B is absolutely wrong.

如果B错了, 那答案是哪个?

jnlvo

so as to一般表目的，不知能不能表结果？


本题中的cost的用法确实很怪，通常是Migraine costs而不是Americans cost,如：


nearly 130 million Americans are overweight or obese – a condition that cost the nation $117 billion in medical and other expenses in 2000.


不知哪位可以来解答。

wang0736

"thus"(n.) refer to the whole situation mentioned ahead, so is pl. "cost" is present time.