You should feel happy now compared to when you lived in the countryside.
这个句子非常奇怪，compared to 后面接了一个 when 从句，如此的使用方法也可以吗？
▲你的句子并不奇怪。这里的 when 有些语法学家称之为缩合连接副词，它在乎义上等于 the time when。
你的句子：You should feel happy now compared to when you lived in the countryside.
等于：You should feel happy now compared to the time when you lived in the countryside.
句意为：与你住在乡下相比，你目前应该感到非常幸福了。
▲类似的使用方法如：
We’ve bought a cottage in the country for when we retire. 为大家退休后计划，大家已经买了一座乡间别墅。（for when…=for the time when…）
Children seem to learn more interesting things compared to / with when we were at school. 与大家上学时相比，孩子目前学到的有趣东西好像更多一些。（compared to / with when…= compared to / with the time when…）
