each of us has a role to play in making the earth a better place to live中的"to play做什么成份"

each of us has a role to play in making the earth a better place to live中的"to play做什么成份"
each of us has a role to play in making the earth a better place to live中的"to play做什么成份"

each of us has a role to play in making the earth a better place to live中的"to play做什么成份"
我们每个人都在使地球变成一个更好的生活的地方的过程中扮演着一个角色.
a role to play 中的to play 做后置定语修饰前面的 role .

后置定语 比如 i have a lot of homework to do.一样的

后置定语，相当于.....has a role which we play in making....... 这样一个定语从句