Solucionario completo de Inglés I 1 Bachillerato Casals con todos los ejercicios resueltos. Bachillerato es la etapa que prepara para la universidad y la EVAU/Selectividad.
En este solucionario de Inglés 1 Bachillerato Casals encontrarás ejercicios interactivos, resúmenes de teoría y soluciones paso a paso.
👆 Haz click en un tema para ver ejercicios y teoría.
Tema 1 — Tenses review: Present and Past
El Present Simple se usa para hábitos y verdades generales (She works every day). El Present Continuous (am/is/are + -ing) para acciones en progreso (I am studying now). El Past Simple para acciones terminadas en un momento concreto (They visited London last year). El Past Continuous (was/were + -ing) para acciones en progreso en el pasado (It was raining when I left). Clave: los state verbs (know, believe, want, belong, own) NO se usan en tiempos continuos.
Conceptos clave:
Present Simple: hábitos y hechos permanentes (She plays tennis every week)
Present Continuous: acciones en curso o temporales (I am reading a book this week)
Past Simple: acciones completadas (We went to Paris in 2023)
Past Continuous: acción en progreso interrumpida (I was cooking when the phone rang)
State verbs: know, believe, want, own, belong → NO continuous
Tema 2 — Future forms: will, going to, Present Continuous
Will se usa para predicciones generales (It will rain tomorrow), decisiones espontáneas (I’ll help you) y promesas (I will always love you). Going to para planes e intenciones decididos previamente (I’m going to study Medicine) y predicciones con evidencia (Look at those clouds — it’s going to rain). El Present Continuous como futuro para planes fijos con fecha y hora (I’m meeting John at 5 pm). Present Simple para horarios (The train leaves at 8:30).
Going to: planes previos + predicciones con evidencia visible
Present Continuous: citas y planes fijos (I’m flying to London on Friday)
Present Simple: horarios y programas (The film starts at 9 pm)
Shall: sugerencias y ofertas formales (Shall I open the window?)
Tema 3 — Perfect tenses: Present, Past, Future
Present Perfect Simple (have/has + pp): conecta pasado con presente. Con for (duración), since (punto de inicio), already, yet, just, ever, never. Ejemplo: She has lived here since 2010. Present Perfect Continuous (have been + -ing): enfatiza la duración (I have been waiting for 2 hours). Past Perfect (had + pp): acción anterior a otra pasada (When I arrived, she had already left). Future Perfect (will have + pp): acción completada antes de un momento futuro (By 2030, I will have finished university).
Conceptos clave:
Present Perfect Simple: experiencia, resultado presente (I have visited Rome twice)
Present Perfect Continuous: duración hasta ahora (She has been studying all day)
Past Perfect: pasado anterior a otro pasado (They had eaten before we arrived)
Future Perfect: completado antes de un momento futuro (By June, I will have graduated)
For vs Since: for + duración (for 3 years) / since + punto (since 2020)
Tema 4 — Conditionals: zero to third + mixed
Conditionals review: Zero (If+Present, Present — general truths), 1st (If+Present, will — real future), 2nd (If+Past, would — unreal present), 3rd (If+Past Perfect, would have+pp — unreal past). Mixed conditionals: 3rd+2nd («If I had studied medicine, I would be a doctor now» — past cause, present result) or 2nd+3rd («If I were braver, I would have spoken up» — permanent trait, past situation).
Conceptos clave:
Zero: If+Present, Present (always true)
1st: If+Present, will (real future)
2nd: If+Past, would (unreal present)
3rd: If+Past Perfect, would have+pp (unreal past)
Mixed: combine 2nd+3rd conditions
0/3 ejercicios completados
Ejercicio 1Básico
"If I ___ (be) you, I would apologize." — What type?
💡 Pista: Unreal present → 2nd Conditional.
📝 Ver solución paso a paso
Paso 1**2nd** (If + Past Simple, would + base)
Ejercicio 2Intermedio
"If she had arrived earlier, she ___ (catch) the train."
💡 Pista: 3rd Conditional: would have + past participle.
📝 Ver solución paso a paso
Paso 1**would have caught** (3rd Conditional)
Ejercicio 3Avanzado
"If I had studied medicine, I ___ (be) a doctor now." — Mixed?
💡 Pista: Past cause → present result: would + base (not would have).
📝 Ver solución paso a paso
Paso 1**would be** — Mixed: 3rd condition + 2nd result
Tema 5 — Passive voice: all tenses
La voz pasiva se forma con be + participio pasado. Se usa cuando el agente es desconocido, obvio o irrelevante. Present: English is spoken worldwide. Past: The window was broken yesterday. Perfect: The report has been written. Future: The house will be painted next week. Modal: This must be done immediately. Con dos objetos, ambos pueden ser sujeto pasivo: They gave me a book → I was given a book / A book was given to me.
Conceptos clave:
Formación: sujeto + be (en el tiempo verbal) + past participle
By + agente: solo si es información relevante (The book was written by Cervantes)
Pasiva con modales: can be done, must be sent, should be checked
Pasiva con dos objetos: She was offered a job / A job was offered to her
It is said that… / He is said to…: pasiva impersonal con verbos de opinión
Tema 6 — Reported speech: statements, questions, commands
El Reported Speech transforma citas directas en indirectas con backshift temporal. Present → Past: «I like it» → He said he liked it. Past → Past Perfect: «I went» → She said she had gone. Will → Would: «I will come» → He said he would come. Preguntas: sin inversión ni auxiliar («Where do you live?» → She asked where I lived). Yes/No: if/whether («Are you coming?» → He asked if I was coming). Comandos: tell + object + to-infinitive («Sit down» → She told me to sit down).
Reported questions: orden afirmativo, sin do/does/did
Reported commands: tell/ask/order + object + (not) to + infinitive
No backshift: si la información sigue siendo verdad (She said the Earth is round)
Tema 7 — Modal verbs: deduction and speculation
Modal verbs for deduction: must = almost certain (positive): «She must be at home» (I’m sure). can’t = almost certain (negative): «He can’t be 50» (impossible). might/could/may = possible: «It might rain» (perhaps). Past deduction: must have + pp («He must have left»), can’t have + pp («She can’t have forgotten»), might have + pp («They might have got lost»).
Conceptos clave:
Must: sure it IS true
Can’t: sure it ISN’T true
Might/Could/May: possibly true
Must have + pp: sure about past
Can’t have + pp: sure it DIDN’T happen
Tema 8 — Relative clauses and cleft sentences
Las Defining Relative Clauses identifican al nombre (sin comas, el pronombre puede omitirse si es objeto): The man (who/that) I met was friendly. Las Non-defining añaden información extra (con comas, NO se puede omitir el pronombre ni usar that): My brother, who lives in Madrid, is a doctor. Pronombres: who (personas), which (cosas), whose (posesión), where (lugar), when (tiempo). Cleft sentences enfatizan un elemento: It was John who broke the window. What I need is a holiday.
Conceptos clave:
Defining: identifica (The girl who called is my sister) — sin comas
Non-defining: información extra (Paris, which is in France, is beautiful) — con comas
Whose: posesión (The woman whose car was stolen reported it)
Omisión del pronombre: solo en defining cuando es objeto (The film [that] I saw)
Cleft sentences: It was… who/that…; What… is/was…
Tema 9 — Linking words and discourse markers
Los conectores unen ideas y estructuran el discurso. Adición: moreover, furthermore, in addition, besides, as well as. Contraste: however, nevertheless, although, despite, in spite of, whereas, on the other hand. Causa: because, since, as, due to, owing to. Consecuencia: therefore, consequently, as a result, thus, so. Propósito: in order to, so as to, so that. Ejemplos: for instance, for example, such as. Conclusión: in conclusion, to sum up, all in all, on the whole.
Conceptos clave:
Contraste: although/even though + clause; despite/in spite of + noun/-ing
Causa-efecto: because + clause; because of / due to + noun
However vs Although: however = punto nuevo; although = misma frase
Propósito: so that + clause; in order to / so as to + infinitive
Posición: however/moreover al inicio con coma; although al inicio o mitad
Tema 10 — Writing: essays, reports, formal letters
El essay (opinión o for-and-against) sigue la estructura: introducción (presenta el tema), desarrollo (2-3 párrafos con argumentos + ejemplos) y conclusión (resumen + opinión). La formal letter usa: Dear Sir/Madam, I am writing to…, I would be grateful if…, Yours faithfully/sincerely. El report tiene título, secciones con encabezados, tono impersonal y recomendaciones al final. Claves: variedad léxica, conectores, no repetir palabras, párrafos claros.
Conceptos clave:
Essay estructura: Introduction → Body (2-3 paragraphs) → Conclusion
For-and-against: pros en un párrafo, contras en otro, opinión en conclusión