Usage and explanation of English prepositions

English preposition is a grammatical structure part of speech used to express the relationship between words or phrases in English. Its usage is mainly to put nominal words or phrases after modified or explained sentence elements to express the semantic relationship between sentence elements before and after prepositions.

English prepositions (prepositions)

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Preposition is a very important grammatical structure part of speech in English. Although English preposition is a "small word" that cannot be used as a sentence component alone (many prepositions have only two or three letters), it is a "big word" that contains practical meaning and shows the semantic relationship between the modified and modified sentence components (incorrect use or understanding will lead to semantic differences). The second or phrase after an English preposition belongs to a nominal part of speech, that is, a noun, pronoun or gerund, and forms a prepositional phrase with the preceding preposition. These nouns or phrases placed after prepositions are called "prepositional objects" grammatically. As the name implies, these words are restricted by prepositions just as the object of verbs is restricted by verbs. Therefore, if a pronoun is used as the object of a preposition, it must be in the accusative form. Preposition phrases are usually used as adverbial, predicative, postposition attribute or complement in sentences. The meaning of prepositions can be divided into prep. Location preposition, mode preposition, reason preposition, quantity preposition, etc.