Here’s a breakdown of the grammatical categories you've mentioned, along with their definitions:
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Interjections: Words or expressions used to express a strong feeling or sudden emotion, often standing alone and not necessarily related to grammatical structure. Examples include "wow," "oh," "ouch," and "yay."
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Prepositions: Words that express relationships between nouns (or pronouns) and other words in a sentence. They often indicate direction, location, time, or introduce objects. Examples include "in," "on," "at," "between," and "during."
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Conjunctions: Words that connect words, phrases, or clauses. They help to coordinate or join different parts of sentences. Examples include "and," "but," "or," "nor," "for," "so," and "yet."
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Pronouns: Words that replace nouns in a sentence to avoid repetition and make sentences easier to understand. Examples include "he," "she," "it," "they," "this," "anyone," and "who."
If you have any questions or need further clarification on any of these concepts, feel free to ask!