She is grateful for the start she had in life.

start 在这里指"开始、起步阶段"，引申为"人生早期的机会或优势"。 grateful 是形容词，由名词 grate（感激）加后缀 -ful（充满...的）构成，表示"感激的、感谢的"。 the start she had in life 指"她人生初期获得的有利条件或机遇"。