我在“英语语法网”上帮你找到了答案：
此句的上下文是这样的：But the man who looks intently into the perfect law that gives freedom,and continues to do this,not forgetting what he has heard,but doing it—he will be blessed in what he does.选自《圣经》的“雅各书”,我们在译本上找到的翻译如下：惟有详细察看那全备使人自由之法律的,并且时常如此,这人既不是听了就忘,仍是实在行得出来,就在他所行的事业上必然得这福.其中的英文句式比较特殊,现分析如下,供参考：who looks intently into the perfect law that gives freedom,and continues to do this 是修饰 the man 的定语从句；not forgetting what he has heard,but doing it 为两个并列的现在分词短语,用作状语.