The idea for creating a day for children to honor their father began in Spokane,Washington.
从句义上理解,你首先明白句子意思哦.三者排列按句义来的.
for creating a day修饰the idea.是怎样的idea,作它的限制性定语成分,修饰限制.
for children 修饰The idea for creating a day.
to honor their father 是目的状语,补充句义的作用.你所罗列的这三个短语都是修饰成分,起修饰限定作用.
句子的主句是The idea began in Spokane.