[求助]OG11－77

Even though the direct costs of malpractice diputes amounts of a sum lower than 1 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.

C. amounted to less

D. amounted to lower

og解释是：The sentence does reqiure a noun (less), not an adjective (lower), as the object of the preposition to.

请问less和lower的区别都是依据这个判断么？在意思上如何区别？

顶上来，请大家指点哇

Lower是形容词,是长度,高度的概念.

后面是数字,要求用less修饰。如; 修饰时间，数量和距离等的复数名词前用less.如 less than three weeks, less than four hundred dollars, less than fifty meters.

By 1977, the USA was importing no less than 45% of its oil.

OG说这里要求noun,但我觉得这里less应该是pronoun.

谢谢LS的解答～

另：longman上对less的解释只有aderb/determiner/preposition, less能用作pronoun么？

我对这题一直有疑问。本人觉得og说less是名词显然是错的。less than 1 percent of结构，less做形容词，percent是名词，less修饰percent。

此外，不同意三楼的解释。

og11-100t

Bihar is India's poorest state, with an annual per capita income of $111, lower than in the most impoverished countries of the world.

B. lower than that of

这里的lower就是修饰的income,income不是高度长度。我认为这纯属是修饰习惯的问题。

我也认为如果把less当成名词是错误的，因为一，less (名词）than 1 percent of 不能构成比较级结构，就是名词不能引导比较级，必须是形容词或副词引导比较级。二，形成双名词，less(名词1）   percent（名词2）

正确的解释应该是less than 修饰 1 percent

请各位大虾指点。。。。。。。