First conditional
1 If you study hard, you will pass your exam
2 If you don't go home, you will have a big problems
3 If the weather is fine, we will go for a walk
Second conditional
1 If you went to bed earlier you would not feel tired
2 If I had 2 million dollars, I`d give a lot to charity.
3 If people knew their future they would make less mistakes
Third conditional
1 If I had paid more attention in class, I would have understood the lesson
2 If you had called me, I would have come.
3 If I had read that book, I would have known the answer