The document discusses the use of the modal verb "have to" to express obligation or necessity. It provides examples of using "have to" to talk about things that are required or obligatory, as well as examples of using the negative form "don't have to" to talk about things that are not required. The document also covers forming questions and short answers using "have to".

1. HAVE TO

2. We use this modal:
1. For obligation or necessity to do something:
1. I have to arrive before 8 o’clock. My boss is very
strict in this.
2. I have to take this book back to the library or I’ll get a
fine.
3. I have to show my homework to mum every day.
2. In negatives to express lack of obligation (there is no
obligation):
1. You don’t have to get to work early today. The boss
will be away all day.
2. You don’t have to eat all the sandwich if you don’t
want to.
3. They don’t have to read that book. It’s optional.

3. I
You
He
She
It
We
You
They
Have to
Have to
Has to
Has to
Has to
Have to
Have to
Have to
play
read
phone
swim
jump
play
study
write
basketball in this campus.
books in University.
his wife every day.
in the pool for 2 hours.
over the chair for 1 biscuit.
our instruments for hours.
Your lessons every day.
e-mails to their customers.
AFFIRMATIVES

4. I
You
He
She
It
We
You
They
DON´T
DON´T
DOESN’T
DOESN’T
DOESN’T
DON´T
DON´T
DON´T
Have to
Have to
Have to
Have to
Have to
Have to
Have to
Have to
play
read
phone
swim
jump
play
study
write
basketball in this cam
books in University.
his wife every day.
in the pool for 2 hours
over the chair for 1 bi
our instruments for ho
Your lessons every da
e-mails to their custom
NEGATIVES

5. QUESTIONS
DO
DO
DOES
DOES
DOES
DO
DO
DO
I
You
He
She
It
We
You
They
Have to
Have to
Have to
Have to
Have to
Have to
Have to
Have to
play basketball in this campus
read books in University.
phone his wife every day.
swim in the pool for 2 hours.
jump over the chair for 1 biscui
play our instruments for hours
study Your lessons every day.
write e-mails to their customer

6. SHORT ANSWERS
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
I
You
He
She
It
We
You
They
DO.
DO.
DOES.
DOES.
DOES.
DO.
DO.
DO.
No,
No,
No,
No,
No,
No,
No,
No,
I
You
He
She
It
We
You
They
DON´T.
DON´T.
DOESN’T.
DOESN’T.
DOESN’T.
DON´T.
DON´T.
DON´T.

7. SHORT ANSWERS
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
Yes,
I
You
He
She
It
We
You
They
DO.
DO.
DOES.
DOES.
DOES.
DO.
DO.
DO.
No,
No,
No,
No,
No,
No,
No,
No,
I
You
He
She
It
We
You
They
DON´T.
DON´T.
DOESN’T.
DOESN’T.
DOESN’T.
DON´T.
DON´T.
DON´T.