First kind
The form is singular, but the meaning can be singular or plural. This kind of collective noun includes family (family:' Times New Roman' ">; Family (,team, class, audience, etc. ) is characterized by its usage: if regarded as a whole, it means singular meaning; If its single member is considered, it means plural meaning. Comparison and experience: His family has a large population. His family is a big family. His family are waiting for him. His family is waiting for him. There are 45 students in this class. This class consists of 45 students. This class is reading English now. The students in this class are reading English. The students in this class are reading English.
the second type
Collective noun is singular in form, but always plural in meaning. This category includes cattle (cattle, livestock), cattle (people), police (police) and so on. Its usage is characterized by: only singular form, but it means plural meaning. When used as subject, the predicate is plural; Not used with (n), but can be used with. People will laugh at you. People will laugh at you. The police are looking for him. The police are looking for him. Many cows were killed for it. Many livestock were slaughtered as a result. Note: The unit prefix is used to indicate the number of heads of livestock. Such as: five cows, five cows, fifty cows, fifty cows.
The third category
Collective noun is plural in form and plural in meaning. This category includes goods, clothes, etc. Its usage is characterized by its only plural form (of course, it also means plural, and the predicate is plural when it is used as the subject), but it is usually not used with numerals. Clothes dry slowly in rainy season. Clothes don't dry easily in rainy season. Such clothes are very expensive. Clothes like that are very expensive. If the product is of poor quality, you should complain to the manufacturer. If the goods are of poor quality, you should complain to the manufacturer.
The fourth category
This kind of collective noun is singular in form and singular in meaning, including luggage/luggage (suitcase), clothing (clothing), furniture (machinery), poetry (poetry), scenery (scenery), jewelry (jewelry), equipment (equipment) and so on. Our clothes can keep out the cold. & lt& gt Have you checked all your luggage? Have you checked all your luggage? The thief stole all her jewels. This hospital has no decent equipment. This hospital has no decent equipment. The Tang Dynasty is regarded as the heyday of China's poetry. People think that the Tang Dynasty was the heyday of China's poetry. Note: The individual countable nouns corresponding to machinery, poetry, jewelry and scene are machinery, poetry, jewelry and scene. Such as: a poem/a poem, a poem with many machines/machines/machines.
The fifth category
Add a few frequently-tested collective noun Besides the four types of collective noun mentioned above, the following collective noun should also be noted: 1. When hair refers to all hair or hair, it is collective noun (uncountable); When it refers to several hairs or hairs, it is a single noun (countable). My hair has grown very long. My hair has grown very long. The police found two hairs there. The police found two hairs there. 2.man is an uncountable collective noun with no plural form or article. This is an invention that benefits mankind. This is an invention that benefits mankind. Humans have their own problems. Humans have their own problems. Note: When mankind stands for "human beings (classes)", although it is uncountable, it can sometimes stand for plural, especially when its predicative is plural. Man is a clever animal. Man is a rational animal. As a collective noun, fruit is usually uncountable. He doesn't eat much fruit. He doesn't eat fruit. He grows fruit in the country. He grows fruit in the country. But when it comes to species, it can be regarded as a countable noun, that is, a fruit refers to a fruit and a fruit refers to a variety of fruits. Contrast: Some fruits have thick skins. Some fruits have thick skins. Potatoes are vegetables, not fruits. Potatoes are vegetables, not fruits.
I hope it helps you ~ ~