CONDITIONAL SENTENCE - 01

If, unless - conditional sentence 

If you tickle me, I will tickle you  

If you tickle me - subordinate clause 

I will tickle you - main clause 

Subordinate clause - simple present tense = main clause - will+verb 

If you study well, you will pass the exam.

If she passes the exam, I will give her a valuable gift.

If my father brings a cell phone, I will present it to you.

If Radhika loves Rohith, he will marry her.

If you start now, you can catch the train.

Subordinante clause - simple past tense = main clause - would+verb

If you studied well, you would pass the exam.

If she passed the exam, I would give her a valuable gift.

If my father brought a cell phone, I would present it to you.

If Radhika loved Rohith, he would marry her.

If you started now, you could catch the train.

Subordinante clause - past perfect tense = main clause - would+have+verb 

If you had studied well, you would have passed the exam.

If she had passed the exam, I would have given her a valuable gift.

If my father had brought a cell phone, I would have presented it to you.

If Radhika had loved Rohith, he would have married her.

If you had started a little earlier, you could have caught the train.

love/loves will
loved would
had loved would have

Unless = If not

You cannot pass your exam with A grade unless you study well. 


 If I had enough money, I would buy that scooter.

 If you heat water at 100 degree Celsius, it boils.