Use "group" when expressing uncountable. Like a herd of hippos.
Because quantifiers are words used to express the unit of quantity of people, things or actions, the words "Ge, Zhi, Kou, Ba" and "Jin, kg, Dou, Sheng, Chi, Cun and Zhang" in One Man, Two Pears, Three Bells and One Teapot are used to express the unit of quantity of different types of people or things.
Quantifiers are divided into substance quantifiers and momentum words. Matter quantifiers represent the units of calculation of people and things, such as "ge" in "a person". Momentum words indicate the number of actions and the total time of occurrence, such as "times" in "see three" and "day" in "see three".
Quantifiers that modify nouns can be divided into two situations according to whether nouns are countable:
Countable nouns, such as person and table;
Countless nouns, such as sugar and water.
Extended data
Special noun quantifier
A unit of measurement that represents things. For example, "strips, roots, branches, pieces, grains, pieces, pairs, pairs, buckets, kilograms, kilometers, acres" and so on. These are all special quantifiers. Some noun quantifiers borrow nouns, such as "jar (a jar of water), dish (a dish of peanuts), box (a box of books)" and so on. This kind of quantifier is called "borrowed quantifier".
Temporary noun quantifier
It refers to that some nouns are temporarily in the position of quantifiers and used as quantitative units. For example:
A, bring two plates of jiaozi and a bottle of soy sauce.
B, sit in a room full of people and set the bed.
This form usually indicates the number of things owned by a place. There are two differences between group A and group B:
1, the number of group A can be any number, and the number of group B can only be "one".
2. Group B emphasizes quantity, but Group A doesn't.
Baidu Encyclopedia-Quantifier