Spanish

Oraciones
Combina los elementos para formar oraciones completas. Utiliza el pretérito perfecto (present perfect) y añade elementos cuando sea necesario.

 

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Modelo

 

yo / siempre / querer / un iPad
Yo siempre he querido un iPad.

nosotros / comprar / cámara digital más innovadora

tú / nunca / pensar / en ser matemático

los científicos / ya / descubrir / cura

el profesor / escribir / fórmulas en la pizarra

mis padres / siempre / creer / en los ovnis

Discurso
Jorge Báez, un médico dedicado a la genética, ha recibido un premio por su trabajo. Completa su discurso de agradecimiento con el pluscuamperfecto.

Muchas gracias por este premio. Recuerdo que antes de cumplir 12 años ya (1) (decidir) ser médico. Desde pequeño, mi madre siempre me (2) (llevar) al hospital donde ella trabajaba y recuerdo que desde la primera vez me (3) (fascinar) esos médicos vestidos de blanco. Luego, al cumplir 26 años, ya (4) (pasar) tres años estudiando las propiedades de los genes humanos, en especial desde que (5) (ver) un programa en la televisión sobre la clonación. Cuando terminé mis estudios de posgrado, ya se (6) (hacer) grandes adelantos científicos…

Explicación
Reescribe las oraciones usando el pluscuamperfecto. Sigue el modelo.

Me duché a las 7:00. Antes de ducharme hablé con mi hermano.

Ya había hablado con mi hermano antes de ducharme.

Yo salí de casa a las 8:00. Antes de salir de casa miré mi correo electrónico.

Llegué a la oficina a las 8:30. Antes de llegar a la oficina tomé un café.

Se apagó la computadora a las 10:00. Yo guardé los archivos a las 9:55.

Fui a tomar un café. Antes, comprobé que todo estaba bien.

Historia del mar
Completa la siguiente nota de enciclopedia con los verbos conjugados en el pretérito perfecto o el pluscuamperfecto.

En diciembre de 1872, la tripulación del barco Dei Gratia encontró en el océano Atlántico al barco Marie Celeste. Navegaba a toda velocidad. Pero no había gente.

Un mes antes, el Marie Celeste (1) (salir) de Nueva York hacia Génova. Llevaba alcohol industrial. Cuando la tripulación del Dei Gratia lo encontró, (2) (desaparecer) toda la tripulación. El bote salvavidas y otras cosas (3) (desaparecer) también. Pero el alcohol estaba allí. Nunca pudieron saber qué pasó.

Desde entonces, la gente (4) (dar) muchas explicaciones sobre el hecho. Algunos (5) (decir) que la tripulación dejó el barco porque creyó que iba a hundirse. Otros (6) (contar) historias exóticas. La desaparición de la tripulación del Marie Celeste es una de las más famosas historias del mar.

 

Completar

 

Completa las oraciones con la forma correcta del pretérito pluscuamperfecto de los verbos en paréntesis.

 

 

No pude leer mis correos porque (perder) mi contraseña.
Te envié un mensaje de texto con la información que te (prometer).
Fue todo un desafío crear la página web que mis clientes me (pedir).
Nosotros nunca (trabajar) con este tipo de programa.
Por sus errores, era evidente que Marisa no (utilizar) el corrector ortográfico.

Cambiar

 

Cambia las siguientes oraciones afirmativas a oraciones negativas en pretérito pluscuamperfecto. Utiliza los elementos dados y sigue el modelo.

 

 

Modelo

 

A mi escuela ha llegado Internet. (todavía)
A mi escuela todavía no había llegado Internet.

 

Miguel ha reparado un reproductor de MP3. (nunca)

Sonia y su hermano han creado un blog. (todavía)

Yo he adjuntado el archivo a este correo. (aún)

Tú has navegado en la red. (nunca)

Nosotros hemos descargado las fotos a la computadora portátil. (antes)

3 – ¿Qué han hecho?
Combina estos elementos para formar oraciones completas. Usa el pretérito perfecto y haz los cambios necesarios.

nosotros / descargar / programas en la red

matemáticos / descubrir / fórmula revolucionaria

astrónoma / observar / cometa / por / horas

usted / realizar / avances / investigación

ingeniera / patentar / descubrimiento

tú / enviar / correo electrónico

2 – El mundo de las computadoras
Reescribe estas oraciones usando el pluscuamperfecto. Sigue el modelo.

 

Modelo

 

Hace una hora envié un correo electrónico. Usé el corrector ortográfico antes de enviarlo.
Ya había usado el corrector ortográfico cuando envié el correo electrónico.

Recibí tu mensaje de texto a las 5:00. Terminé de descargar los programas a las 4:30.

Borré los archivos. Me llamaron a mi celular cinco minutos más tarde para pedírmelos.

Guardé los archivos adjuntos. Mi computadora se rompió poco después.

Tomé tres cursos de informática el año pasado. Compré esta computadora anteayer.

Adjunté unas fotos al correo electrónico. Perdí la conexión unos minutos después.

1 – Avances científicos
Completa las oraciones utilizando expresiones de tiempo con hacer y el pretérito. Añade los elementos necesarios.

 

Modelo

 

ingenieros / patentar el invento / dos años
Los ingenieros patentaron el invento hace dos años.

yo / descargar el programa / quince minutos

astronauta / descubrir un planeta nuevo / varios años

biólogos / investigar sobre plantas acuáticas / cinco años

químicos / hacer un descubrimiento revolucionario / un año

teléfonos celulares con cámara / inventarse / varios años

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