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Universidad Autónoma Del Estado De Hidalgo Sistema De Universidad Virtual English 4 UNIT 4 OBLIGATIONS AND NEEDS “Obligations and Needs” E.T.E. Karim Juárez.

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Presentation on theme: "Universidad Autónoma Del Estado De Hidalgo Sistema De Universidad Virtual English 4 UNIT 4 OBLIGATIONS AND NEEDS “Obligations and Needs” E.T.E. Karim Juárez."— Presentation transcript:

1 Universidad Autónoma Del Estado De Hidalgo Sistema De Universidad Virtual English 4 UNIT 4 OBLIGATIONS AND NEEDS “Obligations and Needs” E.T.E. Karim Juárez Cortes Idea Original y Diseño

2 TypeModal ObligationOught to Must Need Have to / has to Need to / needs to No obligationOughtn’t to Mustn’t No needDon’t have to / doesn’t have to Don’t need to / doesn’t need to

3  USE: It expresses obligation, it’s your duty to do something, you are obligated to do something. Affirmative Examples:  You must wear a helmet when you ride a motorcycle.  You must use a seatbelt when you are driving.  She must be back soon this night, because it’s a rule in her home. MUSTN’T ( must not ) : It expresses obligation, it’s a forbidden to do something, you are not allowed to do something. It’s against the rules. Negative Examples:  You mustn’t feed the animals in the zoo.  You mustn’t use mobile phones in a bank.  She mustn't be absent in class, because she has a lot of absences, and she will not have the right to apply the final test.

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5  USE: express obligation Examples:  Roberto ought to be in the plane by now. ( affirmative)  Roberto oughtn’t to be in the plane by now. ( negative)  I ought to work in the hospital.  She ought to go to the mall.  My family and I ought to visit my grandmother every weekend.

6  USE: it expresses need. Examples:  My mother has to buy some more bread for tonight’s dinner.  I can’t stay longer in the party. I have to come back to my home early, because I have a visit tonight.  I have to complete my homework or my parents won’t let me to go to the pub.  She has to work tomorrow. If you use in negative form, it expresses a lack of need.  You don’t have to wash the dishes.  She doesn’t have to do an exam  I don’t have to get up early because it’s a holiday tomorrow.

7 Help me!!! I have to choose just one option.

8 Personal PronounAuxiliary (modal) VerbComplement I, you, we, they Have toWork Study Run Read Very hard. Night shifts Very quickly. Slowly to pronounce well. Don’t have to He she, it Has toWork Study Run Read Very hard. Night shifts Very quickly. Slowly to pronounce well. Doesn’t have to Questions: Do you have to work tonight? Yes, I do / No, I don’t Does your mother have to wash the dishes? Yes, she does / No, she doesn’t

9 USE: it expresses a need. Examples:  He needs to buy some petrol.  He doesn’t need to buy some petrol, he has already bought some.  Does he need to buy some petrol? Yes, he does / No, he doesn’t.  I need to work extra hours.  My parents need to have a break.  She needs to study for her tests, because she has failed twice.  Does he need to buy some food ? Yes, he does / No, he doesn’t.

10  In our company we need to have more offices.  In our company we need to be punctual to start checking customers’ problems online.

11 Text taken from:  Grace Tony ( 2007 ), Nursing 1 USA : Oxford University Press  Evans Virginia, y Dooley Jenny (2000): Enterprise 1 Grammar Book. USA, Express Publishing  Evans Virginia, y Dooley Jenny (1999): Enterprise 3 Grammar Book. USA, Express Publishing  Evans Virginia y Dooley Jenny ( 2005): Upstream Beginner A1+. USA, Express Publishing. Images taken from: Seatbelts:


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