"extraposition"的定义和意义

What is "extraposition"?

Extraposition is a grammatical construction where a phrase, often a subject or object, is moved to the end of a sentence for clarity or emphasis. This typically involves a clause or noun phrase that is usually placed at the beginning of the sentence but is instead positioned after the main verb, using a placeholder like "it" or "there" to maintain sentence structure. For example, in the sentence "It is important to study," the clause "to study" is placed after the verb "is," while "it" serves as a placeholder. Extraposition can create a smoother flow in sentences and make complex ideas easier to understand by placing emphasis on the main verb or action.