The document discusses the first and second conditional. The first conditional describes a possible future event and its consequences, using the structure "if + present, will/going to + infinitive". The second conditional talks about unlikely or imaginary situations and their results, using "if + past tense, would + infinitive". Both conditionals can substitute other modal verbs like "might" or "could" for "will" and "would". The conditionals can also reverse the order of the if and result clauses while keeping the same meaning.

1. First and second
conditional

2. First conditional: form
Two clauses: if clause + result clause
IF CLAUSE : IF + SUBJECT + PRESENT SIMPLE + OBJECT,
RESULT CLAUSE : SUBJECT + WILL + INFINITIVE + OBJECT

3. First conditional: use
It describes a particular situation and its posible result in
the future.

4. First conditional: use
An action in the future will only happen if a certain
condition is fulfilled by that time.

5. First conditional: example
If I have enough time, I'll watch the football match.

6. First conditional: example
If it rains, I won’t go to the park.

7. First conditional: other considerations
You can use be + going to instead of will.
If he comes to the party, I will be surprised.
or
If he comes to the party, I am going to be surprised.

8. First conditional: other considerations
You can use might, could, can, or may instead of will.
If he receives the e-mail, he will send the information.
or
If he receives the e-mail, he could send the information.

9. Second conditional: form
Two clauses: if clause + result clause
IF CLAUSE : IF + SUBJECT + PAST SIMPLE + OBJECT,
RESULT CLAUSE : SUBJECT + WOULD + INFINITIVE + OBJECT

10. Second conditional: use
Use it to talk about imagined events or states and their
consequences

11. Second conditional: use
It can be about an unreal present or an unlikely future.

12. Second conditional: use
It refers to an action in the present that could happen if
the present situation were different.

13. Second conditional: examples
If I were a millionaire, I would buy a castle.

14. Second conditional: examples
If I had her number, I would call her.

15. Second conditional: other considerations
Use the phrase “if I were you” to give advice.
If I were you, I would wear a helmet.

16. Second conditional: other considerations
You can use might, could, can, or may instead of would.
If I traveled abroad, I would stay in a luxurious hotel.

17. First & Second conditionals:
other considerations
You can write the if clause, a comma, and then the result
clause.
OR
You can write the result clause and then the if clause.
The meaning is the same

18. First & Second conditionals:
other considerations
If veronica ate all the cupcakes, she would be sick.
OR
Veronica would be sick if she ate all the cupcakes.