用法透視：
這個句型用來說明某事很簡單易行，"你所要做的一切只不過是??????"
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這個按鈕然后等待。
2.All you have to do is to sign here.
你只要在這里簽字就行了。
3. They promised that all I have to do is to tell the truth and leave.
他們答應(yīng)我只要我說出真相就可以走了。會話記憶：
A: Do you know how to play go? 你知道圍棋怎么下嗎?
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.
很簡單。你所要做的只是用自己的子去圍對方的子，然后 占下他所有的地盤就行了。
A: But I heard it is very difficult to play.
可我聽說圍棋很難下。
B: It's easier said than done. When you actually play, it can be very frustrating.
說當(dāng)然比做容易。你真下起來的時候就很傷腦筋了。
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