This document discusses the different types of conditionals in English. Type 1 conditionals are used to express possible future events using "if + present simple, future simple". Type 2 conditionals express unreal present conditions with "if + past simple, subject + would + verb". Type 3 conditionals are for unreal past conditions using "if + past perfect, subject + would + have + past participle". Type 0 conditionals express general truths with "if + present simple, present simple".

1. Conditionals
They are used to express condition

2. Type 1: Future Possibility
If + Present Simple , Future Simple
If you work hard, you will get good marks

3. Type 2: Unreal Present
If + Past Simple , S + would + verb 1st form
If you worked hard, you would get good marks

4. Type 3: Unreal Past
If + Past Perfect , S + would + have + verb 3rd form
If you had worked hard, you would have got good
marks

5. Type 0: General truth or Scientific fact
If + Present Simple , Present Simple
If you heat water to 100 oC, it boils.