首先让我们确定哪些名词属于内部复数。凡是能用these, several, many等修饰但结尾不加s(即零位复数)的名词属内部复数范畴。这类名词主要是些动物名称和表示人群的词。表示动物名词的词中,内部复数主要用于野生动物,而不用于家养动物。Allàan(1976)用下面二例比较来说明这一点: The farmer shot some duck.?/The farmer fed somo duck.前一句谈论打野鸭子,所以用内部复数是正确的;后一句谈论喂鸭子,所以应该用外部 First let’s determine which nouns belong to the inner complex. Any noun that can be modified by these, several, many, etc. but ending in s (that is, a plural) is an internal plural. These nouns are mainly animal names and words that represent the population. Among the words denoting animal nouns, the internal plural is mainly used for wildlife and not for domestic animals. Allàan (1976) illustrates this by comparing two examples: The farmer shot some duck.?/The farmer fed somo duck. The previous sentence talked about playing wild ducks, so using the internal plural is correct; the latter one talks about feeding ducks, so Should use external