realizingthatthiswasnoordinaryfish,thefishermanmadeeveryeffortnottodamageitinanyway.里面的to是什么语法形式,为什么加to,然后realize为什么加ing

Question

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

Answer 1

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