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<正>用好非谓语动词,找到其逻辑主语是关键,下文结合例句和考题讨论非谓语动词的逻辑主语的位置。一、句子的主语非谓语动词作状语、主语补足语时,其逻辑主语为句子的主语。如:Charles Babbage is generally considered to have invented the first computer.(to have invented为句子的主语补足语,它的逻辑主语是CharlesBabbage,该动作在谓语动词所示动作之前发生,用完成式)