After a heavy rain,a rain bow may spread all ...way across the sky.中spread all the way across the sky用语法解释是怎样的?

问题描述:

After a heavy rain,a rain bow may spread all ...
way across the sky.中spread all the way across the sky用语法解释是怎样的?

spread 是谓语,后面有两个状语.第一个是 all the way,第二个是aross the sky
整句意思是,一阵大雨过后,天空中(across the sky) 也许会出现彩虹,从这头跨到那头(all the way).