摘要： Charles Babbage is generally considered the first computer. A. to invent B. inventing C. to have invented D. having invented 分词: 现在分词主动进行.过去分词被动状态 boiling point retired worker Standing by Liu Qiang, I am listening to the music. I came in, singing. I came in, followed by two dogs. 分词做状语.看主语 分词做定语.在分词前看到名词.主被动取决于该名词,若无名词.主被动由主语决定 The bird living in the nest is called Liu Qiang. The beach polluted by oil belongs to Japan. 分词做补语.在分词前看到名词.主被动取决于该名词,若无名词.主被动由主语决定 Lao Yu keeps the boy crying. Lao Yu saw his donkeys tied at the tree.

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