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Lo esencial: Estructura 2: Sujeto + is said to + infinitivo. Cada una de las 20 soluciones indica la regla aplicada, para entender el error y no solo copiar la respuesta.
Este solucionario recoge las respuestas de los 20 ejercicios de la pasiva impersonal (1.º Bachillerato), en el mismo orden que la ficha; así puedes corregir cada una enseguida.
Aquí tienes cada respuesta con su explicación. Corrige con un lápiz de otro color y fíjate en la causa de cada fallo: falta de it, participio mal escrito, o infinitivo simple en lugar de perfecto. En los ejercicios abiertos compara con el modelo y la lista de comprobación.
Nivel: 1.º Bachillerato (LOMLOE, RD 243/2022, referencia MCER B1+) · Referencia oficial: RD 243/2022 1.º Bachillerato, Nivel de referencia MCER B1+, RD 243/2022 CE1 Comprensión, RD 243/2022 CE4 Mediación
Solucionario de la pasiva impersonal (1.º Bachillerato)
Ejercicio 1. Completa con is o are
Con expected, reported y known el verbo es to be en presente y concuerda con el sujeto: singular is, plural are, y it pide is.
- is
- are (two hikers = plural)
- is
- are (many caves = plural)
- are
Ejercicio 2. Elige el participio
Después de is/was va el participio pasado.
- said
- believed
- expected
- known
- thought
Ejercicio 3. Ordena las palabras
Empieza por it o por el sujeto y coloca el verbo en pasiva.
- It is said that the bakery is closing.
- The new teacher is believed to be strict.
- Hundreds of fans are expected to arrive.
- It was thought that the treasure was hidden.
Ejercicio 4. Traduce al inglés con it
Esquema: It is + participio + that + oración.
- It is said that the director is very demanding.
- It is expected that they will arrive tomorrow.
- It is known that the tiger is a solitary animal.
- It is believed that there is a ghost in the castle.
Ejercicio 5. Pasa a la forma con it
Se mantiene la oración subordinada tal cual.
- It is believed that the lake is very deep.
- It is expected that prices will rise.
- It is reported that the singer is in Boston.
- It is known that bats are not blind.
Ejercicio 6. Une el principio con el final
Cada principio encaja con un final por el sentido.
- b — to be training in Andorra
- a — algo pasado exige to have been built
- d — to open next week (futuro)
- c — to have left by the back door
Ejercicio 7. Conjuga la pasiva
Presente de be + participio. Atención al plural.
- is said
- is believed
- is reported
- are thought
- are expected
Ejercicio 8. Reescribe con sujeto e infinitivo
El sujeto de that… pasa al principio y el verbo se convierte en to + infinitivo.
- The shop is believed to sell fake bags.
- The winner is expected to get £5,000.
- The driver is thought to live in Dublin.
- Ximena is known to train every morning.
Ejercicio 9. Reescribe con infinitivo perfecto
Hecho anterior: to have + participio.
- The actress is reported to have left Toronto.
- The vase is believed to have broken in 1950.
- The dinosaurs are thought to have died out suddenly.
- Valentina is said to have found the keys.
Ejercicio 10. Pasa al pasado
Mismo momento que was said: infinitivo simple. Si el hecho es anterior, to have + participio.
- The old mill was said to be haunted.
- The earth was thought to be flat.
- Three people were reported to be injured.
- The thief was believed to have escaped.
Ejercicio 11. Reescribe con there
There queda como sujeto y se añade to be.
- There are thought to be wolves in these hills.
- There is believed to be oil under the sea.
- There were said to be problems at the airport.
- There are reported to be two suspects.
Ejercicio 12. Corrige el error
Falta el sujeto it, sobra una subordinada o falta el to o el plural.
- It is believed that the bridge is unsafe.
- He is said to play chess. (o It is said that he plays chess.)
- Mateo is said to have won the race. (o It is said that Mateo won the race.)
- The team is expected to win.
- The athletes are known to be fit.
Ejercicio 13. Une el titular con su significado
Cada titular conserva su estructura impersonal.
- c — believed to be planning: se cree que piensa dimitir
- a — expected: previsión futura
- b — said to have been found: algo pasado
Ejercicio 14. Lee la noticia y responde
Busca la frase exacta en el texto.
- F — solo se cree (believed, thought); los expertos aún lo comprueban.
- V — It is said that a farmer found it.
- V — expected to display it in June.
- F — There are believed to be two more letters.
Ejercicio 15. Explica la noticia a una amiga
Respuesta modelo: It is said that the cinema is going to close. The owner is believed to have sold the building, and it is expected to become a supermarket.
Comprueba: it is said that, to have sold (hecho anterior) y is expected to.
Ejercicio 16. Traduce con distintas estructuras
Cada frase usa un tiempo distinto del infinitivo.
- The thief is believed to have fled by bike.
- There were said to be more than a thousand people in the square.
- The new phone is expected to be released next month.
- The Romans were known to have built the aqueduct.
Ejercicio 17. Reescribe con tiempos complejos
Se conserva el aspecto: continuo (to be + -ing) o perfecto continuo.
- The glacier is said to be melting quickly.
- The chef is believed to have been working in Lima for years.
- The minister was reported to be resigning.
- The burglars are thought to have been watching the house.
Ejercicio 18. Completa el artículo
Cada hueco necesita una palabra concreta.
(1) is · (2) to · (3) is · (4) are · (5) to · (6) are
Is believed to have returned: pasiva + infinitivo perfecto. There are thought to be: plural porque son ten pairs.
Ejercicio 19. Redacta una noticia breve
- Respuesta modelo: A festival in Valencia is expected to attract 20,000 visitors. The singer is reported to arrive on Friday. The stage is said to have cost €2 million. The fireworks are believed to start at midnight.
Comprueba: cuatro frases, cuatro estructuras, infinitivo perfecto en cost.
Ejercicio 20. Resume un texto en español
Respuesta modelo: The volcano is believed to have been active for over 2,000 years. The last eruption is known to have happened in 1971. Scientists are expected to install new sensors this autumn.
Comprueba: tres estructuras distintas, sin traducir palabra por palabra se.
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