Sentence. An oath. Quantifier, a term in mathematical science, is usually used to represent the quantitative unit of people, things or actions, and is called quantifier. Such as head, horse, bar, etc. Quantifiers, that is, words or morphemes used with nouns to represent countable or measurable objects or numbers, are often used to represent a certain category, and the objects referred to by nouns can be classified into this category according to their shapes or functions (such as "Ben" in Chinese "Three Books").