1. Has to / doesnt have to forobligationsUnit 4: Lesson 4Id like to be

2. Have to (objective obligation) An obligation is a requirement to take some course ofaction, 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 obligatoryFor 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 answerNegative 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 + doesnt + have to + work on Sunday. A herder + doesnt + have to + wear uniform A chef + doesnt + have to + travel a lotGo 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 policewomana firefighter a waitera nurse 10. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 11. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 12. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 13. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 14. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 15. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 16. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 17. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 18. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 19. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 20. I would like to be a doctor a pilot a cook a waitress a carpenter a policeman a teacher a policewomana firefighter a waitera nurse 21. My interest in the field of chemistry and biology. I am aperson and I love to make people feel better... they save peoples lives I hate it when i see poor people on the road with everypossible disease and no help. I want to become a doctor andhelp those who need it. I want to apply my god given talent to correct the humanbrain. 22. I like to fly over the universe. Im good at computer technician. So I decided to become apilot. My father is a pilot. And I want to inherit a profession. A pilot have to wear a uniform. I prefer uniform to freestyling. 23. I loved to cook and eat. Office work never quite caught my attention. Answeringphones, sorting files, and sitting behind a computer were tooimpersonal. I loved the human interaction of the restaurantwork, however the work itself was not challenging... A private chef is someone who prepares meals for a client atthe clients home and is exclusively employed by them. 24. I like make the furniture. A carpenter fixes the broken things. Doesnt have to wear uniform. Suit or uniform are not sogood for me. And doesnt have to learn difficult, anduninteresting subjects such asmathematic, chemistry, biologic, etc.