1. Has to / doesn’t have to for
obligations
Unit 4: Lesson 4
I’d like to be …

2. Have to (objective obligation)
 An obligation is a requirement to take some course of
action, whether legal or moral.
 We can use have to + infinitive to express obligation
(something you have to do).
 We often use ”have to” to say that something is obligatory
For example

3. Use of Have to
 In general, have to expresses impersonal obligation. The
subject of have to is obliged or forced to act by a separate,
external power (for example, the Law or school rules).
Have to is objective.
For example

4. Structure of “Have to”, the 3rd person
(question)
Auxiliary verb + subject + have to + verb (infinitive) ?
Does + Dorj + have to + work on Sunday ?
Does + a herder + have to + wear uniform ?
Does + a chef + have to + travel a lot ?
Positive answer
Negative answer

5. Structure of “Have to”, the 3rd person
(positive)
Subject + has to + verb (infinitive)
Dorj + has to + do the homework.
A herder + has to + work hard.
A pilot + has to + wear uniform.
Go back to question

6. Structure of “Have to”, the 3rd person
(negative)
Subject + auxiliary verb + have to + verb (infinitive)
Dorj + doesn’t + have to + work on Sunday.
A herder + doesn’t + have to + wear uniform
A chef + doesn’t + have to + travel a lot
Go back to question

7. For example:
 Children have to go to school.
 John has to wear a tie at work.
 Does doctor has to wear a tie at work?
Structure

8. Answer

9. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

10. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

11. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

12. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

13. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

14. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

15. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

16. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

17. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

18. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

19. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

20. I would like to be …
a doctor
a pilot
a cook
a waitress
a carpenter
a policeman
a teacher
a policewoman
a firefighter
a waiter
a nurse

21.  My interest in the field of chemistry and biology. I am a
person and I love to make people feel better...
 they save people's lives
 I hate it when i see poor people on the road with every
possible disease and no help. I want to become a doctor and
help those who need it.
 I want to apply my god given talent to correct the human
brain.

22.  I like to fly over the universe.
 I’m good at computer technician. So I decided to become a
pilot.
 My father is a pilot. And I want to inherit a profession.
 A pilot have to wear a uniform. I prefer uniform to free
styling.

23.  I loved to cook and eat.
 Office work never quite caught my attention. Answering
phones, sorting files, and sitting behind a computer were too
impersonal. I loved the human interaction of the restaurant
work, however the work itself was not challenging...
 A private chef is someone who prepares meals for a client at
the client’s home and is exclusively employed by them.

24.  I like make the furniture.
 A carpenter fixes the broken things.
 Doesn’t have to wear uniform. Suit or uniform are not so
good for me. And doesn’t have to learn difficult, and
uninteresting subjects such as
mathematic, chemistry, biologic, etc.