Ejercicios B1 : Expresar certeza y duda en inglés (corregido)

Estos ejercicios te ayudarán a consolidar el uso de los verbos modales y expresiones clave para expresar certeza y duda en inglés, tal como se explican en el curso.

→ Ver el curso : Expresar certeza y duda en inglés : curso completo

Exercice 1 — Rellena los huecos con el modal correcto

Completa cada oración con el verbo modal más adecuado para expresar certeza o duda (must, might, can't, should). Escribe la oración completa en tu respuesta.

1. She ___ be at home — all the lights are off and her car is gone.
2. I ___ have left my keys on the kitchen table, but I'm not sure.
3. He's studied for weeks, so he ___ pass the exam without any problems.
4. They ___ be twins — they look exactly the same!

Correction

1. She can't be at home — all the lights are off and her car is gone.
2. I might have left my keys on the kitchen table, but I'm not sure.
3. He's studied for weeks, so he should pass the exam without any problems.
4. They must be twins — they look exactly the same!

Exercice 2 — Corrige los errores gramaticales

Cada oración contiene un error relacionado con el uso de modales para expresar certeza o duda. Reescribe la oración correcta completa.

1. She must to be very tired after working all night.
2. I might to know the answer, but I'm not completely sure.
3. He can't has finished already — he only started ten minutes ago.
4. They should to arrive by noon if the train is on time.

Correction

1. She must be very tired after working all night.
2. I might know the answer, but I'm not completely sure.
3. He can't have finished already — he only started ten minutes ago.
4. They should arrive by noon if the train is on time.

Exercice 3 — Elige la opción correcta

Elige la opción (A, B o C) que mejor expresa el grado de certeza o duda indicado entre paréntesis. Escribe la oración completa elegida en tu respuesta.

1. Contexto: estás casi seguro de que tu amigo está en el trabajo. — A) He must be at work right now. B) He might be at work right now. C) He can't be at work right now.
2. Contexto: crees que es imposible que este restaurante esté cerrado los lunes. — A) This restaurant might be closed on Mondays. B) This restaurant must be closed on Mondays. C) This restaurant can't be closed on Mondays.
3. Contexto: no estás seguro, pero es posible que llueva esta tarde. — A) It must rain this afternoon. B) It might rain this afternoon. C) It can't rain this afternoon.
4. Contexto: es muy probable que el tren llegue pronto porque suele ser puntual. — A) The train can't arrive soon. B) The train might not arrive soon. C) The train should arrive soon.

Correction

1. He must be at work right now.
2. This restaurant can't be closed on Mondays.
3. It might rain this afternoon.
4. The train should arrive soon.