Educación Secundaria para Personas Adultas 2módulo - aulAragon

Unit 4: New technologies
• MUST is a modal verb.
It only has one form (MUST). It doesn't change from first, to second, to third person like other verbs.
It is always followed by an infinitve without TO
You mustn't smoke
You must fasten your seat belt
● HAVE TO / HAS TO
Have to / Has to is also used to express obligation:
Jane has to work on Saturdays
I have to finish typing these reports for my boss
● DON'T / DOESN'T HAVE TO
The negative form of have to means that it is not obligatory or necessary to do something:
I don't have to get up early tomorrow. It is Sunday
You don't have to do the shopping. We have a lot of food
COMPARE: You mustn't use the phone in the office (It is prohibited)
You don't have to finish this report now. (It is not necessary)
Choose the right option
Complete the sentences with: Must or Mustn't
1. You __________________________ be late for work
2. You __________________________ be nice to other people
3. You __________________________ eat fruit and vegetables
4. We __________________________ make noise in the library
5. We __________________________ hurry to catch the bus
6. You __________________________ light fires in the forest
7. You __________________________ listen to your teacher
8. You __________________________ smoke in hospitals
Writing
Put the words in the correct order to make positives, negatives and questions with have to / has to
1. have / I / leave / to / now
2. has / answer / she / to / calls / phone
3. have / do / when / home / you / go / to / ?
4. has / here / John / to / be / six / at
5. have / at / weekends / I / don't / work / to
6. Have / doesn't / she / uniform / wear / a / to
7. Have / clean / her / she / to / room / does / ?
Educación Secundaria para Personas Adultas
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