The document discusses the first conditional in English grammar. It explains that the first conditional is used to express a strong connection between a condition and its outcome. It is formed using the present simple in the if-clause and the future simple in the main clause. For example, "If I win the lottery, I'll buy a house." It also describes how to form negative first conditional sentences.

2. First conditional 
 The first conditional is used to express a
strong connection between the condition
and outcome. To understand what we
refer we will see an example.
Example:
If I win the lottery, I'll buy a house.

3. WHAT IS?
 · We use the conditional to indicate a
condition and a result and therefore
consists of two phrases, the main and
indicating the condition.
· This type of sentence indicates what
will happen if the condition occurs in the
present or the future.

4. HOW TO FORM?
 YES: The first conditional is formed with the present
simple in the 'if-clause' (a phrase with 'if') and the
simple future in the 'main clause' (main clause).
Example:
[If ... Simple Present +] + [will + main verb]
If I win the lottery, I'll buy a house.
If I win the lottery, I will buy a house

5.  NEGATIVE: To make a conditional negative
we can use two different structures. The first
would be to deny the following verbs
normally.
Example:
If I win the lottery, I would not buy a house.
If I do win the lottery, I will not buy a house.

7. The Second Conditional is used
to talk about 'impossible'
situations.
Example:
•If we were in London today, we would be
able to go to the concert in Hyde Park.
•If I had millions dollars, I'd give a lot to
charity.

8. •If there were no hungry people in this
world, it would be a much better place.
•If everyone had clean water to drink, there
would be a lot less disease