This document discusses the use of "have to" to express necessity or lack of necessity. It provides examples of affirmative sentences using "have to/has to" to mean something is necessary, such as "I have to study for my English test." Negative sentences using "don't have to/doesn't have to" indicate something is not necessary, like "You don't have to do that." Interrogative sentences ask if something is necessary, for example "Do I have to clean it?" The document provides forms and examples of using "have to" in the affirmative, negative, and interrogative to express if something is obligatory or optional.

1. Bloque 10. Tema 3
HAVE TO
“I have to study for my English test.”

2. Bloque 10. Tema 3
HAVE TO
Uso :
Have to / Has to = it is
necessary (es necesario)
Don't have to / Doesn't have to
= it isn't necessary (no es
necesario

3. Bloque 10. Tema 3
HAVE TO
Formación
AFFIRMATIVE
SENTENCES
SUBJECT MODAL VERB EXAMPLES
affirmative
sentences
( + )
NECESSITY:
have to/has to
means it is
necessary.
I
you
we
they
have to
clean
get
pick up
have
eat
go
work
I have to clean my room.
You have to get a new book.
We have to pick up the laundry.
They have to have a notebook.
he
she
it
has to
He has to eat dinner now.
She has to go to work now.
It has to work.

4. Bloque 10. Tema 3
HAVE TO
NEGATIVE
SENTENCES
SUBJECT MODAL VERB EXAMPLES
negative sentences
( - )
LACK OF
NECESSITY:
don't have
to/doesn't have to
means it is not
necessary.
You have a choice.
I
you
we
they
don't have to work
do
clean
eat
work
go
be
I don't have to work on Saturday.
You don't have to do that.
We don't have to clean the car.
They don't have to eat pizza.
he
she
it
doesn't have to
He doesn't have to
work tomorrow.
She doesn't have to go today.
It doesn't have to be that way.

5. Bloque 10. Tema 3
HAVE TO
have
HAVE
INTERROGATIVE
SENTENCES
MODAL SUBJECT VERB EXAMPLES
WH- word (if
necessary)
do
I
you
we
they
work
do
clean
eat
work
go
be
When do you have to start?
Do I have to clean it?
does
he
she
it
What does she have to do?
Does he have to buy them?

6. Bloque 10. Tema 3
HAVE TO
I have to
cook my
breakfast!!!