句子一:He gave each mouse in one group thirty percent less food, or more precisely, thirty percent fewer calories than the mice in the other group which ate a normal amount.
句子二:We eat thirty percent less.
请问老师:句子里的两个percent less与一个percent fewer的词性是什么,他们之间是怎么修饰的呢?
比较接可以被数词、倍数词、分数词等修饰,表示多或者少的程度。例如:
Tom is heavier than John. 汤姆比约翰重。
Tom is 10 kilogram heavier than John. 汤姆比约翰重10公斤。
Tom is 30 percent heavier than John. 汤姆比约翰重30%。
至于比较级用限定词few还是little的比较级,取决于其后的名词为复数名词还是不可数名词,与百分数无关。food不可数,故用less. calories为复数,故用fewer。
We eat thirty percent less.这句中的less为不定代词little的比较级,替代不可数名词food。也可以理解为little是限定词,省略了中心名词food. 作eat的宾语。比较级可被分数词修饰。
He ate 9 springrolls. I ate thirty percent fewer. 不定代词few的比较级替代了复数名词springrolls (春卷)。
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