"compare with"和"compare to"都表示“与……相比”，但它们在使用和所强调的方面有一些微妙的区别：
compare to
用法：通常与动词compare连用，用于将一件事比作另一件事，强调相似之处。
例句：
I compare her to a rose, because she is so beautiful.
He compared the weather to his mood, saying it was as changeable as the weather.
compare with
用法：用于比较两个或多个项目的相似和/或不同之处，强调对比。
例句：
The scientist compared the experiment results with the previous data to see if there were any improvements.
The teacher compared the two poems to highlight the differences in style and theme.
总结：
compare to：侧重于将一件事比作另一件事，强调相似性。
compare with：侧重于比较两个或多个项目的相似和不同之处，强调对比。
根据具体的语境和所要表达的比较内容，可以选择合适的短语来表达。