A tree, a hat, a flower and a classroom.
One (school) one (accident) one (accident) one (accident) one (accident) one (accident) one (accident)
An umbrella, a spring, a bed and a message.
A full moon, a cannon, a lamp and a piece of land.
Words that are generally used to represent the quantitative units of people, things or actions are called quantifiers.
Usually represents the unit of measurement of things. For example, "strips, roots, branches, pieces, grains, pieces, pairs, pairs, buckets, kilograms, kilometers, acres" and so on. These are special quantifiers. Some quantifiers are borrowed 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". As long as it is reasonable, for reference.