present/ conditional sentences type 1 :

If+ subject + VI (Simple Present Tense) + Subject + will + VI (Simple Presenttense
- If I work hard, I will get a lot of money.
- If I have a lot of money, I will buy an expensive car.
- If I study hard, I will pass the final examination. 
-etc.......

past/ conditional sentences type 2 :

If + subject + V2/simple past tense + Subject + would + Vl/past futuretense
- If I were you, I would apply for that scholarship.
- If l got high a score in the finalexamination, my mother would give me sports car
- My husband would buy me a new car if hegot a job in foreign company. 
- etc....

future/conditional sentences type 3 :

If + subject + had + V3/past perfects + subject + would have + V3/past perfect
- If I had found her address, I would have sent her an invitation.
- If you had remembered to invite me, I would have attended your party.
- If he had asked you for forgiveness, would you have forgiven him?
- etc...