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介词(Preposition),又称前置词,通常位于名词词组或相当于名词词组的结构之前,从而构成介宾短语。然而,有时由于结构变化的需要,在许多情况下介词可以后置。一、在比较复杂的句式中,句中或分句中若有一名词或名词词组可以和后置介词构成介宾关系,则该介词不可省略。1、在不及物动语的被动语态中,谓语部分的介词和句子主语构成介宾关系,必须保留相应介词。(1)The children are taken good care of.(2)Such success has never been dreamed of.
Preposition (Preposition), also known as the preposition, is usually located in front of the noun phrase or equivalent to the structure of the noun phrase, thus forming the mediator phrase. However, prepositions can sometimes be postulated in many situations because of the need for structural changes. First, in more complicated sentences, if a noun or noun phrase in a sentence or clauses can form a mediator relationship with a postpositional preposition, the preposition can not be omitted. 1, In the passive voice of discordant words and motives, the prepositions of the predicate and the subject of the sentence form a mediator relationship, and the corresponding prepositions must be reserved. (1) The children are taken good care of. (2) Such success has never been dreamed of.