Modals — Obligation

Referencia gramatical

Modals — Obligation — Ejercicios

Elige la opción correcta

Selecciona la forma modal adecuada según el contexto.

1. You don't have to / mustn't use your phone in the library.
   (mustn't / don't have to) 
2. We don't have to / mustn't hurry. We have plenty of time.
   (don't have to / mustn't) 
3. You don't have to / mustn't answer the phone while driving.
   (mustn't / don't have to) 
4. Don't you think we should / must call mum to say we'll be late?
   (should / must) 
5. A fireman has to / should wear a uniform when at work.
   (has to / should) 
6. You shouldn't / mustn't go out in the rain without an umbrella.
   (shouldn't / mustn't) 

Corrige los errores

Cada frase tiene un error en la parte subrayada. Escribe la forma corregida.

1. I must go to work by bus yesterday. My motorbike was being repaired.
   
2. You don't look well. You should to go home.
   
3. My father is a taxi driver and he should work nights. (It's part of his job.)
   
4. You don't have to play football here. It says no ball games.
   
5. People mustn't use their phones when they are talking to you.
   

Modals — Obligation — Respuestas

Elige la opción correcta

1. mustn't
2. don't have to
3. mustn't
4. should
5. has to
6. shouldn't

Corrige los errores

1. had to go
2. You should go
3. he has to work
4. mustn't play
5. correct