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逻辑主语：是非谓语动词动作的执行者或承受者;它们在逻辑上存在着主谓关系或动宾关系，但不能直接作非谓语动词的主语，因此叫逻辑主语。 逻辑主语的判断： 1. 句子主语就是非谓语动词的逻辑主语，它们之间是逻辑上的主谓关系或动宾关系。例如： She likes helping others .(she 就是 helping 的逻辑主语) Moved by my words, her father told me the truth. (her father 是 moved 的逻辑主语) 2. 介词of 或for的宾语就是非谓语动词的逻辑主语。例如： Its kind of you to tell me the news . (you 是to tell 的逻辑主语) 这个句子中，it是形式主语，句子的真正主语是to tell me the news. It is impossible for you to finish so much work in so short a time . (you 是to finish 的逻辑主语) 3. 复合结构中的宾语就是非谓动词的逻辑主语。例如： The doctor asked me to answer her question. (me 是to answer 的逻辑主语) I saw him playing at the river side. (him 是playing 的逻辑主语) | 
