This document discusses the four types of conditional sentences in English. Type 0 conditional sentences use the present tense to describe general truths. Type 1 conditional sentences use the present tense and future tense to describe likely future events. Type 2 conditional sentences use the past tense and modal verbs to describe unlikely or hypothetical events. Type 3 conditional sentences use the past perfect tense to describe impossible or unlikely past events. Examples are provided for each type of conditional sentence structure.

1. CONDITIONAL
SENTENCE

2.  Definition of Conditional Sentence
In simple terms, a conditional sentence is a compound
sentence that contains a condition regarding a supposition,
imagination, or an event that has not yet happened. This
conditional sentence begins with "if" as a sign that the condition has
not happened. The conditional sentence form is "If-clause + main
clause". If you notice, the if-clause is part of the conditional
sentence. Meanwhile, the main clause usually contains
consequences or consequences of the preconditioned condition

3.  Conditional sentence type 0
This type is usually referred to as zero conditional sentences. This
type of sentence is used when the results or consequences of a
condition are materialized, aka explaining general truth and
scientific facts.
Present tense with the formula:
 If + simple present, simple present.
Example of sentences
 If we burn paper, it becomes ash.
 I feel sick if I eat too much.
 If you don't brush your teeth, you get cavities

4.  Conditional sentence type 1
A first conditional sentence is a form of conditional sentence used
when the result or consequence is likely to occur in the future.
This can happen because there are realistic conditions that make
sense for the possibility to occur.
The formula: for this sentence is: if + simple present, simple future
"will" / imperative and
The example is:
 If I meet him, I will introduce myself.
 I will cook dinner tonight if you clean the house.
 If you rest, you will feel better.

5.  Conditional sentence type 2
Second conditional sentences are a type of conditional sentence that is
used when the result or consequence has little hope of being realized
even though it is unlikely. So it can be said that this second type of
conditional sentence does not necessarily happen but it can also become
a reality.
The formula: used is if + simple past / were, would / could / might +
bare infinitive. The use of would / could / might serves to explain how
big a condition will be
The example is:
 If I inherited a billion dollars, I would travel to the moon.
 If I owned a zoo, I might let people interact with the animals more.
 If I were you, I would continue my study. If I had time, I would go with
you.

6.  Conditional sentence type 3
A third conditional sentence is a conditional sentence when a condition
cannot possibly be realized at all. This can be described as a very
impossible condition or just a dream or imagination. In this third type of
conditional sentence, the tense uses the past perfect
The formula: used is if + past perfect, would / should / could / might +
have + past participle
The example is:
 If you had told me you needed a ride, I would have left earlier.
 If I had cleaned the house, I could have gone to the movies.
 If she hadn't taken the course, she wouldn't have gotten the
scholarship.

7. Thank You