英文摘要 |
All English nouns can be syntactically classified as either count or mass nouns. Nouns such as pen and desk are count nouns, since they possess singular forms, i. e., a pen and a desk as well as plural forms, i. e., two pens and three desks. On the other hand, nouns such as air and butter are mass nouns, since they refer to mass that cannot be individuated. Mass noun do not have plural forms by definition (*three butter is ungrammatical). However, many nouns can be either a count noun or a mass noun depending on the referent. Nouns such hamburger and sausage are count nouns when they refer to individuated entities (such as a hamburger in fast food stores or link sausages), but at the same time are mass nouns when they refer to mass, i. e., meat in a grocery store. |