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  • 1. UNIT 3MODALS: SHOULD, MUST, HAVE TOAll the modal verbs are used as auxiliaries and all of them form conjugations in the same way(Todos los verbos modales son usados como auxiliares y todos ellos forman conjugaciones en lamisma forma)The auxiliary verbs must, should, and have to modify the meaning of the main verb expressingability, authority, formality, politeness.SHOULD: It is used for giving advice (Es usado para dar consejo)MUST: It expresses strong obligation. It depends on the person speaking (Expresa fuerteobligación. Depende de la persona que habla). Commonly used in writingHAVE TO: It expresses obligation and it is the most common expression in everyday use. (Expresaobligación y es la expression más común de uso diario) SUBJECT-PRONOUN AFFIRMATIVE NEGATIVE QUESTIONI Must Must not (mustn’t) Must I, we, you,We Should should not (shouldn’t) they_____?You have to don’t have to Should I, we, you,They they_____?Sara and Jhon Do I, we, you, they have to _____?She Must Must not (mustn’t) Must he, she it _____?He Should should not (shouldn’t) Should he, she, it ___?It Has to doesn’t have to Does he, she, it haveJenny to _____?Note: we usually use have to in questions not must. Ex: what do I have to do? (Qué debo/tengoqué hacer?)EXAMPLES: My mother should lose weight (Mi mamá debería perder peso) She shouldn’t eat fast food (ella no debería comer comida rápida) Should they go to the dentist? (Ellos deberían ir al odontólogo?) He must be more disciplined (El debe ser más disciplinado) We mustn’t smoke (No debemos fumar) Must you see him? (tu debes verlo?) I have to take a bath everyday (Tengo que tomar un baño todos los dias) She has to get up early (Ella se tiene que levantar temprano) We don’t have to go to school on Sunday (No tenemos que ir al colegio el domingo) Do they have to pray every day? (Tienes que rezar todos los días?) Does it have to sleep in the garden? (Tiene que dormir en el jardín?)
  • 2. HEALTHY HABITS: (Hábitos saludables) To get a physical or medical check up twice a year To eat a varied and balanced diet To avoid a sedentary life To sleep eight hours a day To exercise To have three meals a day To avoid eating too much candy and sodaUNHEALTHY HABITS: (Hábitos no saludables) To have a sedentary life To eat fattening food. (junk food) To consume drugs To sleep less than 6 hours To sleep too muchEXERCISE: Write some of the obligations a model needs to follow in order to keep in fit. Use must,mustn’t, have to, don’t have to, (doesn’t have to)She/He has to sleep eight hours a day________________________He/she mustn’t consume any drugs_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________EXERCISE: According to the pictures tell them what to do? Use should, shouldn’t, must, mustn’t,has/have to, does/doesn’t have to depending on the situation.
  • 3. ARE YOU HEALTHY?EXERCISE: Answer this survey and check your health habits:
  • 4. 1. Do you like working out? (exercising) a. Yes b. No2. How often do you do it? 5. Do you eat vegetables? a. Once a week a. Yes b. Twice a week b. No c. Three times a week 6. Do you take vitamins? d. More a. Yes3. What kind of exercise do you do? b. No a. Swimming c. Sometimes b. Aerobics 7. How many hours do you sleep? c. Walking, jogging a. Less than five d. Weight lifting b. Between six and eight e. Yoga c. More than eight f. Soccer 8. How often do you have a physical check g. Other up?4. How many meals do you have a day? a. Once a year a. One b. Twice a year b. Two c. Occasionally c. Three d. Never d. Four YOUR SCORE1. a. 3 b. 0 19 - 26: Congratulations¡ you are a very healthy person. You should keep it up.2. a. 1 b. 2 c. 3 d. 43. Any answer is worth 3 points. 11 - 18: Good health but you should care more about sports and your diet.4. a. 1 b. 2 c. 3 d. 45. a. 3 b. 0 0 - 10: you must go to the doctor. You must pay attention to all your health habits.6. a. 3 b. 0 c.27. a. 1 b. 3 c. 18. a. 2 b. 3 c. 1 d. 0EXERCISE: Complete the sentences to express obligation or advice. Use must, mustn’t, has/haveto, don’t/doesn’t have, should, shouldn’t.
  • 5. 1. we ____________ pollute the planet 2. my mother ___________ cook everyday 3. you ____________ bathe the dog once a month 4. you __________ wear the uniform 5. we ______________ throw litter on the streets 6. you _____________ run in the classroom 7. we _____________ brush our teeth three times a day 8. the children ______________ cook their food 9. you _______________ disobey the school rules 10. The students ____________ pay attention in class 11. You _______________ do your homework 12. You ____________ do more exercise 13. My brother ______________ keep his room tidy 14. We _______________ smoke 15. You ______________ get late to school 16. We ____________ eat junk food. 17. My father ____________ get up early everyday 18. You _____________ avoid a sedentary lifeIMPERATIVESUse imperatives to give and follow instructions. (utilice imperactivos para dar y seguirinstrucciones)EXAMPLES: Please, speak slowly Don’t answer the pone Open the door Stand up, please Please, write clearly Don’t play music so loudly Turn the page

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