year after year与year by year有什么区别

She was getting older year _____ year, lonelier and moreridiculous.

填by还是after？yearafter year与yearby year有什么区别是什么？

答案应填 by。year after year与year by year有什么区别是：year after year强调持续（=every year for manyyears）； year by year则侧重变化。比较：

Roses and geraniums are perennials, flowering year afteryear. 玫瑰和天竺葵是多年生植物，年复一年地开花。

Our salaries weren’t in fact moving up year by year asprojected. 事实上，大家的薪资并未按计划年年递增。

你的句子意思是：

She was getting older year by year, lonelier and moreridiculous. 她一年比一年老，愈加孤独，愈加可笑。