Joy English · Nivel B1 · Verbos modalesjoy-english.com

Obligación y consejo: must, have to, should

Nombre:Fecha:

Expresa lo que es necesario, lo que no es necesario, lo que no está permitido y lo que es una buena idea.

Elige la mejor forma

Elige la opción que mejor complete cada oración.

You ___ touch the paintings. It's against the museum rules.
- a) mustn't
- b) don't have to
- c) shouldn't to
It's Saturday tomorrow, so I ___ get up early.
- a) mustn't
- b) haven't to
- c) don't have to
You look tired. You ___ go to bed earlier.
- a) have
- b) should
- c) must to
Yesterday Kofi ___ work late because his colleague was ill.
- a) had to
- b) must
- c) has to
___ you have to wear a uniform at your school?
- a) Are
- b) Must
- c) Do
Visitors ___ show their ticket at the entrance. That's the rule.
- a) don't have to
- b) have to
- c) shouldn't
You ___ eat so much sugar. It's bad for your teeth.
- a) shouldn't
- b) don't have to
- c) haven't to
Lena ___ take the bus to work. She lives very close to her office.
- a) has to
- b) mustn't
- c) doesn't have to

Escribe la forma correcta de las palabras entre paréntesis.

My sister is a doctor, so she ___ (have to) work at weekends sometimes.
We ___ (not / have to) wait long at the airport last night. Our bags came quickly.
You ___ (must / not) tell anyone. It's a secret!
You ___ (should / not) leave your bike outside. Someone might take it.
Students ___ (not / have to) buy the books. The school gives them for free.
___ (do) Ravi have to work tomorrow?
When I was a child, I ___ (have to) share a bedroom with my two brothers.
Next year, Mina ___ (will / have to) take the bus because her school is moving.

a) mustn'tTocar no está permitido, así que usamos mustn't. Shouldn't to nunca es correcto.
c) don't have toLevantarse temprano no es necesario, pero tampoco está prohibido, así que usamos don't have to.
b) shouldEs un consejo, así que usamos should + verbo sin to.
a) had toMust no tiene forma de pasado, así que para una obligación en el pasado usamos had to.
c) DoLas preguntas con have to necesitan do, does o did.
b) have toUna norma crea una obligación, así que usamos have to.
a) shouldn'tEs un consejo sobre algo que no es buena idea, así que usamos shouldn't.
c) doesn't have toElla puede caminar, así que el autobús no es necesario. Usamos doesn't have to.

has toCon she en presente, have to se convierte en has to.
didn't have to / did not have toEs una situación pasada sin obligación, así que usamos didn't have to.
mustn't / must notContar no está permitido, así que usamos mustn't (must not).
shouldn't / should notEs un consejo sobre algo que no es buena idea, así que usamos shouldn't.
don't have to / do not have toComprar los libros no es necesario, así que usamos don't have to.
doesLas preguntas con have to necesitan do o does. Ravi es una sola persona, así que usamos does.
had toEs una obligación pasada, así que usamos had to.
will have to / 'll have toMust no tiene forma de futuro, así que para una obligación futura usamos will have to.