摘要:28.[2010·河北衡水中学三模] the chapter four times, I finally understood the author's theory. A.Reading B.Having read C.To read D.Read 28B考查非谓语动词的用法.根据句意:read动作应发生在understand前.故用现在分词的完成时,I 和read之间是主动关系.故用现在分词状语.

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