Confused in determining the rule of composing ～さえ～ば sentence Let's consider the following conditional sentence but without "ONLY". > If you press the button, the juice comes out. When "ONLY" is inserted with , the conditional sentence becomes as follows. > A: # Question Why do we not use B instead of A? > B:

You can use both expressions fine.

Eg, Say you were explaining to a foreigner in Japan on using a vending machine who had never used one before. You could say something like this,

> All you have to do is ,press the button and a drink will come out.
>
>
>
> All you have to do is study and you will pass.
>
>

I see where "only" is implied and using "all you have to do" as the meaning "you only have to do...."

Hope that helps.