not so much...as...表示“与其......不如......”（否定前者，肯定后者）。如：

She told me she was not so much leaving her job as it was leaving her.

她告诉我，与其说是她辞了工作，不如说是工作辞了她。

《柯林斯高阶英汉双解学习词典》


He is not so much a writer as a reporter.


他与其说是个作家，毋宁说是个记者。

《汉英大词典》


Success lies not so much in luck as in hard work.


与其说成功在于运气，不如说在于辛勤劳动。


He is not so much a scholar as a pedant. [ˈpednt]


与其说他是个学者，不如说他是个书呆子。

There came an explosion, not so much a bang as a shaking like an earthquake.

发生了一次爆炸，没听到一声轰然巨响，倒像是地震那样地面猛晃了晃。

《柯林斯高阶英汉双解学习词典》

A good birth depends not so much on who you are but where you are and howmuch you know.

好的出身与其说是取决于你的身份，还不如说是取决于你的生活环境和知识水平。

《柯林斯高阶英汉双解学习词典》

His manner is not so much regal as professorial

他的言行举止不太像帝王，倒更像学者一些。

《柯林斯高阶英汉双解学习词典》