1.- Will they tell you the truth if you ask them?
2.- Would they tell you the truth if you asked them?
3.- Would they have told you the truth if you had asked them?
1.- If we are free tomorrow, we will go to the cinema.
2.- If we were free tomorrow, we would go to the cinema.
3.- If we had been free tomorrow, we would have gone to the cinema.
1.- We will not go out unless it stops raining.
2.- We would not go out unless it stopped raining.
3.- We would not have gone out unless it had stopped raining.