realizing that this was no ordinary fish,the fisherman made every effort not to damage it

题目

realizing that this was no ordinary fish,the fisherman made every effort not to damage it
in any way.
里面的to 是什么语法形式,为什么加to,然后realize为什么加ing

答案

1 realizing that this was no ordinary fish 分词结构做时间状语== when he realised -- - - (这是时间状语从句)
2 effort not to damage -------to / not to 做effort的定语