play a part in.“在...方面起作用,在...方面扮演角色”
如：Electricity plays awww.souquanme.comn important part in our daily life
电在我们的日常生活中扮演着重要的角色（起着重要的作用）.

play for
为了…而…; 代表…一方;
网络效力;
I would love to play for England again.
我很乐意再次为英格兰队效力。
Ballmer would leverage iTunes, and all those credit cards, by makingwww.souquanme.com a play for payments and identity.
鲍尔默将设法获得付款和身份信息，以利用//www.souquanme.comiTunes以及那些//www.souquanme.com与iTunes关联的信用卡。
Run along now and play for a bit.
走开，去玩一会吧。
I want to play for my country.
我想代表自己的国家参加比赛。
It is just a child's play for him.
这事儿对他来说简直是小儿科。
He is going to adapt his play for television.
他计划把自己的剧本改编成电视剧。
So I can't wait myself to see people's eyes and to play for them,“ he said.
我都等不及看着人们的眼睛为他们演奏了。

play
an
important
part
in
扮演重要的角色，起着重要的任务
与play
an
important
role
意思相同

I can play basketball.
我会打篮cdWZzMFWJ球。
I want to play computer game.
我想玩电子游戏。