Conditionals

1. Type 0 :

1.1. If clause , Main clause

1.2. Both are : Simple Present

1.3. Talking about a general truth

1.4. When and If can you interchangeably Because the outcome will always be the same

2. Type 1 :

2.1. If Clause + Main Clause

2.2. If Clause: Simple Present

2.3. Main Clause: future

2.4. express situations in which the outcome is likely (but not guaranteed) to happen in the future.

2.5. Use a Zero Conditional only when certain result is guaranteed

3. Type 2

3.1. If Clause, Main Clause

3.2. If Clause: Simple Past

3.3. Main Clause: would/could/should/might + v

3.4. express outcomes that are completely unrealistic or will not likely happen in the future.

4. Type 3

4.1. If Clause, Main Clause

4.2. If Clause: past perfect

4.3. Main Clause: Would/could/should/etc. + have + pp

4.4. Explain that present circumstances would be different if something different had happened in the past.

5. Exceptions :

5.1. Were to in If Clause: The verb phrase were to is sometimes used in conditional sentences when the likely or unlikely result is particularly awful or unthinkable. In this case, were to is used to place emphasis on this potential outcome.

5.1.1. Examples

5.1.1.1. If I were to be sick, I would miss another day of work.

5.1.1.2. If she were to be late again, she would have to have a conference with the manager.

5.1.1.3. If the rent were to have been a penny more, they would not have been able to pay it.

5.2. 1. Use Simple future in the IF CLAUSE : when the action in the if-clause will take place after the action in the main clause . For example : If aspirin ease my headache,I will take a couple tonight.

5.3. In conditional type 2 : we don’t use was >>> use “ were “. Forexample: If I were you, I would appreciate my parents.