I was so angry that when the bus arrived at my school, I elbowed my way through the crowd.
that when the bus arrived at my school是时间状语从句吗?那为什么要加一个that?直接说when the bus arrived at my school不就可以了吗?
so ... that 是引导结果状语从句的从属连词,意思是“如此 ...... 以致(于) ...... ” 。so 后接形容词或者副词原级形式, that 后接句子,这里的 when the bus arrived at my school, I elbowed my way through the crowd 是一个带有时间状语从句的主从复合句。