1. Mrs. Anabel Montes - English teacher

2. Have to / Don’t have to
• We use have to when we mean
«this is necessary» or you are
«obliged to».
Example:
All children have to go to school in
this country.

3. • We use don’t have to when we
mean «this is not necessary» or
«you are not obliged».
Example:
Three-year-old don’t have to go to
school.

4. Have to / don’t have to
SUBJECT EXPRESSION
VERB IN BASE FORM
I
study
You have to pay
attention
don’t
We have to practice
They
work
He has to finish
She doesn’t take care
have to
It
be
COMPLEMENT
for the test.
in class.
our English.
every day.
the project today.
of the children.
good.

5. Questions with have to
DO /
DOES
SUBJE
CT
Do
I
you
we
they
Does
he
she
it
EXPRESSIO
N
COMPLEMENT
do
have
to
VERB BASE
FORM
the
homework
?
clean
the class?

6. Can / Can’t
• We use can when we
mean you «are able to»
or «permitted»
• We use it for
«permission»

7. • We use it to express capacity
to do something.
• We use can’t means «you are
not permitted» or that «you
don’t have capacity to do»

8. Can / can’t
AFFIRMATIVE
NEGATIVE
I can swim.
I can’t swim. Can you
swim?
You can’t
Can I stay at
stay at
home?
home.
You can
stay at
home.
QUESTION
SHORT ANSWERS
Yes, I can.
No, I can’t

9. Must / mustn’t
• We use must when we mean that
something is very important and
you are obliged to do it.
• We use mustn’t when we mean
that something is «not
permitted»

10. Must / mustn’t
AFFIRMATIVE
You must
clean your
room.
He must
respect his
friends.
NEGATIVE
SHORT
ANSWERS
You mustn’t
swim without
warming up. Yes, I must.
She mustn’t No, I mustn’t.
go out late.

11. Activity 1

12. MUST / HAVE TO/ DON’T
HAVE TO / MUSTN’T
don’t have to
You------------------do the housework
if you have a cleaning lady.
Anne works for a big company.
has to
She-----------do her job on the computer.

13. has to
Michael-------------take the bus to work
because he hasn’t got a car.
doesn’t have to
John----------------------- go to bed early today.
Tomorrow is a holiday and there is no school.

14. mustn’t
You-------------cheat in exams.
must
You -----------brush your teeth after meals.

15. has to
Sue-----------read twenty pages.
The teacher said so.
mustn’t
You-----------park your car
when you see this sign.

16. mustn’t
We------------cut trees to build new houses.
has to
Tony ---------take his car to the mechanic
because it has just broken down.

17. don’t have to
You------------------carry money on you
if you have a credit card.
don’t have to
You----------------wear a school uniform
when you go to university.

18. My father has a meeting today.
has to
He----------stay in his office this evening.

19. In Turkey if you want to be a doctor
have to
you------------study for six years.
Peter is a policeman.
has to
He ------------wear a uniform
and carry a gun.

20. Robert is a taxi driver.
has to
Sometimes he---------------work at night.
have to
Nurses--------------do night shift.