A prepositional adverb is a word that functions like an adverb but has the form of a preposition, modifying a verb by indicating direction, location, or time. These adverbs typically stand alone, without a following object. For example, in the sentence "She looked up," the word "up" is a prepositional adverb because it modifies the verb "looked" and indicates the direction without needing an object. Prepositional adverbs help provide additional context about how, when, or where an action takes place, making communication clearer and more descriptive.

“prepositional adverb”的英语定义和含义

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