求解答一语法题o_O o_O o_O

Cecile8chen · 发表于 2012-9-5 14:03:24

哎。。。白勇语法里时态第一题就错了还有点不解。。题目如下：
Even though the direct costs of malpractice disputes amouts to a sum lower than one percent of the $541 billion the nation spent on health care last year, doctors say fear of lawsuits plays a major role in health-care inflation.

答案： amounted to less。
即原句正确为：
Even though the direct costs of malpractice disputes amounted to less than one percent of the $541 billion the nation spent on health care last year, doctors say fear of lawsuits plays a major role in health-care inflation.

书上解释说，last year 决定状语从句必须使用一般过去时。
我看了答案后也比较能理解价格需同一时间段比较所以amount to要用一般过去式。
但是，我一开始做这道题的时候把the nation spent on health care last year看做修饰 the $541 billion ，所以选了amounts to less。请问这种理解错在哪。。。。。。

wyw1018 · 发表于 2012-9-5 14:07:33

修饰没错，amount to 的主语是costs是复数，不能用amounts。

求解答一语法题o_O o_O o_O

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