IF

1. I will be happy if I can make my parents proud of me
   I would be happy if I could make my parents proud of me
   I would have been happy if I could have made my parents proud of me

2. If I have $ 1.000.000.000 , I will buy house
    If I had $ 1.000.000.000 , I would buy house
    If I had had $ 1.000.000.000 , I would have bought house

3. I will be sad if my parents are sick
    I would be sad if my parents were sick
    I would have been sad if my parents had been sick

4. If I have a new bag, I will give that for my brother
    If I had a new bag, I would give that for my brother
    If I had had a new bag, I would have given that for my brother

5. I will be happy if I can go to Paris
    I would be happy if I could go to Paris
    I would have been happy if I could have gone to Paris

6. If I am a millionare, I will donate my money
    If I were a millionare, I would donate my money
    If I have been a millionare, I would have donated my money

7. He will send her a letter if He find her address
    He would send her a letter if He found her address
    He would have sent a letter if He had found her address

8. I will marry you if I love you
    I would marry you if I loved you
    I would have married you if I had loved you

9. If I prepare well for the test, I will pass it

    If I prepared well for the test, I would pass it
    If I had prepared well for the test, I would have passed it

10. I will come to your brother’s house if I have enough time
      I would come to your brother’s house if I had enough time
      I would have came to your brother’s house if I had had enough time