5,What is the history of phraseological units?

23.What are the categories of nouns?The categories of nouns are: 1. Common Nouns - These refer to general, non-specific people, places, or things. For example, "table," "book," "chair." 2. Proper Nouns - These are specific, named people, places, or things. For example, "John," "Paris," "Eiffel Tower." 3. Concrete Nouns - These refer to tangible objects that can be seen, heard, smelled, touched, or tasted. For example, "car," "cat," "tree." 4. Abstract Nouns - These refer to intangible concepts, ideas, feelings or qualities that cannot be seen, heard, smelled, touched, or tasted. For example, "love," "happiness," "knowledge." 5. Countable Nouns - These can be counted and pluralized. For example, "book," "books." 6. Non-Countable Nouns - These cannot be counted or pluralized. For example, "water," "music." 7. Collective Nouns - These refer to a group of people, places, or things. For example, "family," "team," "herd." 8. Compound Nouns - These are composed of two or more words joined together to create a new noun. For example, "toothbrush," "rainforest." 9. Possessive Nouns - These indicate ownership or possession. For example, "doctor's," "child's." 10. Gerunds - These are nouns that are formed from verbs and end in -ing. For example, "swimming," "writing."
29.What are the rules for adjectives?
The following are some general rules for using adjectives in English:
1.Adjectives are used to modify or describe nouns or pronouns. Examples: red apple, tall building, happy children
2.Adjectives are usually placed before the noun they modify. Examples: a black cat, a beautiful flower, an interesting book
3.Adjectives are usually not in the plural form unless the noun they modify is also plural. Examples: two green apples, five large houses
4.Adjectives usually follow a specific order, such as opinion, size, age, shape, color, origin, material, purpose. Examples: a beautiful (opinion) large (size) old (age) round (shape) red (color) brick (material) house (purpose)
5.To form comparative and superlative forms of adjectives, add “-er” and “-est” if the adjective is a one-syllable word, or use “more” and “most” if the adjective is a two- or more syllable word. Examples: tall (comparative degree: taller, superlative degree: tallest), interesting (comparative degree: more interesting, superlative degree: most interesting)
6.Adjectives can be modified by adverbs to show the degree of the adjective, such as “very,” “quite,” or “extremely.” Examples: very happy, quite difficult, extremely excited.
Remember that the specific rules for using adjectives can vary depending on various factors such as the context, the type of modifier needed, and intended meaning.