IF CONDITIONAL

1. If I have to study abroad, I'll miss my family so much.
    If I had to study abroad, I'd missed my family so much.
    If I had had to study abroad, I'd have missed my family so much.

2. If you can't take the rules, you shall leave.
    If you couldn't take the rules, you should leave.
    If you couldn't have taken the rules, you should have left.

3. If you ask me, I'll do anything for you.
    If you asked me, I'd do anything for you.
    If you have asked me, I'd have done anything for you.

4. If I can't be the starring role in your heart, I'll take the supporting role.
    If I couldn't be the starring role in your heart, I'd take the supporting role.
    If I couldn't have been being the starring role in your heart, I'd have taken the supporting role.

5. If you feels doubt about it, you shall say no.
    If you felt doubt about it, you should say no.
    If you felt doubt about it, you should have said no.

6. Will you be the Koga if I become the Nina?
    Would you be the Koga if I became the Nina?
    Would you have been being the Koga if I became the Nina?

7. If you falls, you shall not dive it deep.
    If you fell, you shouldn't dive it deep.
    If you have fallen, you shouldn't have dived it deep.

8. If I'm being serious, you shall not play around.
    If I was being serious, you shouldn't play around.
    If I've been being serious, you shouldn't have played around.

9. If you do that, you'll never regret it.
    If you did that, you'd never regret it.
    If you have done that, you'd have never regret it.

10. If I can travel through the time, I'll tell the little me that she can be anything she likes
      If I could travel through the time, I'd tell the little me that she can be anything she likes
      If I could have have traveled through the time, I'd have thought the little me that she can be anything she         likes.