Conditional sentences are complex sentences that contain two clauses: an if-clause that establishes a condition and a main clause that states the result. There are four types of conditional sentences. The first expresses facts that are always true using the present simple tense in both clauses. The second predicts possible future events using the present simple in the if-clause and will/won't + verb in the main clause. The third expresses unlikely possibilities using the past simple in the if-clause and would/wouldn't + verb in the main clause. The fourth expresses impossible past conditions using the past perfect in the if-clause and would have + past participle in the main clause. Punctuation with a comma depends on the order of the clauses

1. CONDITIONAL
SENTENCES

2. Conditional sentences are complex
sentences that have two clauses: If-clause
(which gives the condition) and main clause
(which gives the result).

3. The condition
The result
Conditional sentences or Conditional clauses or IF-Clauses are
used to express that the action in the main clause can only take
place if a certain condition is fulfilled.

4. Conditional sentences also known as
Conditional clauses or IF-Clauses are used
to express that the action in the main
clause can only take place if a certain
condition is fulfilled.

5. There are more four (4) types of conditional sentences:

6. Expresses facts (scientific or personal)that
are always true
If clause
Main clause
Present simple
Present simple
If you heat ice, it melts.

7. Expresses prediction about the future that
will possibly happen.
If clause
Present simple
Main clause
will/won’t + V
If I find her address, I will send her an invitation.

8. Expresses things that probably won’t
happen.
If clause
Past simple
Main clause
would/wouldn’t +V
If I found her address, I would send
her an invitation.

9. Expresses a condition that is impossible to
be fulfilled because it refers to the past
If clause
Past perfect
Main clause
Would have + past
participle
If I had found her address, I would
have sent her an invitation.

10. There is a comma between the sentences if the
IF-clause comes before the main clause.
If I see her , I will tell her the good news.
There isn’t a comma between the sentences if
the main clause comes before IF-clause.
I will tell her the good news if I see her

11. Thank you for your attention.

Teacher: Magdalena