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Ability
- can: present ability: She can speak French fluently.
- could: past ability: I could swim when I was five.
- be able to: used for all tenses: She will be able to drive next year.
Deduction (making guesses)
- must: almost certain (positive): She is not answering. She must be asleep.
- cannot: almost certain (negative): That cannot be true! It is impossible.
- might / may / could: possible but not certain: It might rain later. Take an umbrella.
Ejemplo resuelto
A: "Where is John?" B: "I am not sure."
- He must be at the library. (I am almost sure)
- He might be at the library. (It is possible)
- He cannot be at the library. It is closed today. (Impossible)
Ejercicios
1) Complete with can, could, be able to:
a) When I was 3, I ___ not read.
b) After the course, you ___ speak English well.
c) ___ you help me with this exercise?
2) Make deductions using must, might, cannot:
a) She has been studying all day. She ___ be very tired.
b) He failed the exam. He ___ have studied much.
c) There is a light on in his room. He ___ be at home.
✏️ Actividad de repasoRepasa los conceptos principales de esta lección. Intenta explicar con tus propias palabras lo que has aprendido sobre Ability and deduction.
- Lee de nuevo las secciones que no hayas entendido bien.
- Escribe un resumen de 3-5 líneas con las ideas principales.
- Si hay ejercicios, intenta resolverlos sin mirar las soluciones.