用法透视
这个句型用来说明某事很简单易行，"你所要做的一切只不过是······"。

支持范例
1. All you have to do is to push the button and wait.
你所要做的就是按下这个按钮然后等待。
2. All you have to do is to sign here.
你只要在这里签字就行了。
3. They promised that all I have to do is to tell the truth and leave.
他们答应我只要我说出真相就可以走了。

会话记忆
A: Do you know how to play go?
你知道围棋怎么下吗？
B: It's easy. All you have to do is to use your pieces to surround the opponent's pieces and then take over all of his territory.
很简单。你所要做的只是用自己的子去围对方的子，然后
占下他所有的地盘就行了。
A: But I heard it is very difficult to play.
可我听说围棋很难下。
B: It's easier said than done. When you actually play, it can be very frustrating.
说当然比做容易。你真下起来的时候就很伤脑筋了

来源:可可英语 //m.moreplr.com/kouyu/200911/90116.shtml