The document discusses the zero, first, second, and third conditionals in English grammar. The zero conditional is used to talk about general truths using the structure "if/when + present, present". The first conditional talks about possible future events using "will + present, if + present". The second conditional discusses hypothetical situations using "would + do/be, if + past". The third conditional refers to unreal past situations using "would + have + past participle, if + had + past participle". Examples are provided for each.

1. The Conditional
Z E R O , F I R S T, S E C O N D , A N D T H I R D C O N D I T I O N A L

2. Zero Conditional
 We use the zero conditional to talk about general truths.
 Example:
If/ When you have a special form of this gene, your heart
works better.
If/ When + subject + Present Simple , subject + Present
Simple

3. Exercises
 For example:
 (not / rain / the flowers / die)
 If it doesn’t rain, the flowers die.
 1. (I / wake up late / I / be late for work)
 2. (my husband / cook / he / burn the food)
 3. (Julie / not wear a hat / she / get sunstroke)
 4. (children / not eat well / they / not be healthy)

4. Results
 1. If I wake up late, I be late for work.
 2. When my husband cooks, he burns the food.
 3. If Julie doesn´t wear a hat, she gets sunstroke.
 4. If children don´t eat well, they don´t be ealthy.

5. First conditional
 We use the first conditional to talk about a result that will or
won´t occur in the futur if a condition takes place.
 Example:
We will identify future footballs stars if we use this method.
Subject + ( Will + Present Simple), if (optional) + Present
Simple

6. Show Answer
Check
Exercises
 For example:
a) If you (help) me with my homework, I (finish) it in time to go to the
cinema.
b) If it (not/rain), the students (practice) sport in the playground.
c) Jane (come) home early if she (not/be) very busy at work.
d) Our teacher (be) pleased if we (do) our homework.
e) If Robert (play) football with us, we (win) the match.

7. Results
 a) If you help me with my homework, I will finish it in time to go
to the cinema.
 b) If it doesn´t rain, the students will practice sport in the
playgrond.
 c) Jane will come home early if she doesn´t be very busy at
home.
 d) Our teacher will be pleased if we do our work.
 e) If Robert plays football with us, we will win the match.

8. Second conditional
 We use the second conditional to talk about a hypotetical
situation and to give advice.
 Example:
He would do well if he practised more.
Subject + would + do, if + subject + Past Simple

9. Exercises
 1) If I (be) you, I (get) a new job.
 2) If he (be) younger, he (travel) more.
 3) If we (not/be) friends, I (be) angry with you.
 4) If I (have) enough money, I (buy) a big house.

10. Results
 1) If I were (be) you, I ‘d get (get) a new job.
 2) If he were (be) younger, he ‘d travel (travel) more.
 3) If we weren’t (not/be) friends, I ‘d be (be) angry with
you.
 4) If I had (have) enough money, I ‘d buy (buy) a big
house.

11. Third Conditional
 We use the third conditional to talk about something that
can never happen because the time has already passed.
 He would have won the game if he had tried harder.
 Subject + would + have + Past Participle, if + subject + had
+ Past Participle.

12. Exercises
 1) If you (not/be) late, we (not/miss) the bus.
 2) If she (study), she (pass) the exam.
 3) If we (arrive) earlier, we (see) John.
 4) If they (go) to bed early, they (not/wake) up late.

13. Results
 1) If you hadn´t been late, we wouldn´t have missed the
bus.
 2) If she had studied, she would have passed the exam.
 3) If we had arrived earlier, we would have seen Jhon.
 4) If they had gone to bed early, they wouldn´t have
woken up late.