1. Convierte las siguientes oraciones usando pasado y pasado
perfecto.
1. Everybody vomits because the food has been posioned.
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2. Patty makes the invitation cards before she invites her friends to her
birthday party.
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3. Albert has been sick because he smokes a lot.
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4. Nancy can’t speak with Matthew because he has left the building.
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5. I am sure that I have done the same thing.
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6. I go to the gym after I do my homework.
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7. Marcia has a headache because she has had seafood.
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8. Jack ha invitado a laire a salir al cine antes que Roberto la invitó.
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9. Jacky llega a la junta y no ve a nadie porque ya se han ido.
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10. Samuel y su esposa no han tenido hijos porque ella está enferma.
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De Presente simple a Pasado Perfecto - 2