To this tale,Andersen later added a story from his own life.

To this tale 是目的状语Andersen是主语add是谓语动词later是时间状语story 是宾语from his own life 修饰story挑出主谓宾那原句可简化成Andersen added a story。所以加上去掉的最后翻译：为了这个童话,安徒生后来加入了一个来自他生活的故事。