Ответ:
1. If you don't turn on the computer, you don't be able to play games.
2. Will you help me if I ask you?
3. If he gets a new laptop, he will spend less time in front of the TV.
4. I will buy you a present if I earn some money next week.
5. I won't go Jim's party if he doesn't invite me.
6. If you give him your money, he won't give it back.