If conditional clause use for making a sentence which state that it is not happened yet or it is impossibly can happen. It means that the writers or the speakers are thinking of. In this clause have been divided into four clause, and they are:
1. Present tense + adverb frequency
e.g: If I make cake, I always send to your house.
I often come to your house, if I have much time to spent.
2. Present tense + Future Tense
e.g: If I am a teacher, I will give them the material well.
I will punish u, if you break the regulations.
3. Past tense + Past Future Tense
e.g: If I were president, I would make a policy wisely.
I would arrest you, if I were a policeman.
4. Past Perfect Tense + Future Perfect tense
e.g: If I had had much money, I would have bought a car.
She would have loved you, if you had proven it to her.
NB:
1. For present tense is only used for making a sentence that there are possible to happen.
2. For past tense is only used to state that sentences are impossible to happen.
