Sugerencias:
- Escucha el audio sin consultar el texto. Escucha después nuevamente el audio (utiliza el "control de
audio" o bien el icono "altavoz")
leyendo el
texto y fijándote especialmente en aquéllas palabras o expresiones que no hayas
comprendido.
- Puedes descargar el Audio (a través del icono "altavoz" ). Utiliza el botón derecho del ratón y "guardar enlace" para
descargar el fichero a tu PC, tablet, Smartphone, etc.
- Aprovecha tus momentos libres (desplazamientos, ocio, etc.) para escuchar los
audios.
- Puedes también descargar el Texto (copia el texto a Word, bloc de notas, etc., y guárdalo en
tu dispositivo para consultarlo offline cuando quieras).
Escucha el audio
(escucha el audio más de una vez para familiarizarte con los términos que
se introducen y explican)
For
English learners, the perfect progressive tenses can be scary.
But they are more straightforward than you might think.
When you talk about grammar, perfect means “complete,” and progressive
means “unfinished.”
Perfect progressive sentences focus on the completion of an action that
is, was or will be in progress.
Think about this sentence in the past perfect progressive:
“I had been waiting for three years by the time my application was
approved.” In this example, the emphasis is on duration of the first
verb waiting.
Perfect progressive tenses often answer the question how long? There are
three perfect progressive tenses: the present perfect progressive, the
past perfect progressive, and the future perfect progressive.
Past Perfect
Progressive
Present Perfect
Progressive
Future Perfect
Progressive
Perfect Progressive Tenses
It had been snowing
for two days before it stopped. Had been + -ing verb + for/since
It has been snowing
all month long. Has/have + -ing verb + for/since
It will have been
snowing for three days by the time it stops. Will have been + -ing verb + for/since
Present Perfect Progressive
Let’s start with the present perfect progressive. You form the present
perfect progressive by using have been (or has been) followed by an –ing
verb.
For instance, “She has been sitting in class since early this morning.”
The action, sitting, is continuing. But the emphasis is on the completed
part of the action. Here are some more examples:
I have been waiting for 20 minutes.
I have been studying since I was a child.
It has been snowing all day long.
In all of these sentences, the emphasis is on how the finished activity
relates to the present.
A time reference is not required to use the present perfect progressive.
Sometimes we use it to refer to recently completed actions.
Imagine your friend comes to your house with red, puffy eyes. You might
say, “Your eyes are red. Have you been crying?”
Or you notice that a co-worker is looking tanned. You might ask, “You
look tanned. Have you have been sunbathing?”
Remember that stative verbs cannot be used in any progressive tense. A
stative verb describes unchanging situations, often mental states such
as realize, appear and seem.
You should not say, “I’ve been knowing you for a long time.” If you have
a stative verb, use the present perfect: “I have known you for a long
time.”
Almost all native speakers will contract, or shorten the pronoun that
comes before have or has. “I have been” will sound like, “I’ve been.”
Expert grammarian and teacher Betty Azar tells English learners: “Don’t
expect slow, careful pronunciation of helping verbs in normal
conversation.”
Past Perfect Progressive
Let us move on to the past perfect progressive. The past perfect
progressive emphasizes the duration of a past action before another
action happened.
For example, “I had been smoking for 10 years before I quit.”
You form the past perfect progressive by using had been followed by an –ing
verb.
Notice how the past perfect progressive often includes the adverbs for
and since to express duration. You will also see the adverbs before,
when or by the time used to introduce a second action.
The second action uses the simple past tense. Here are some more
examples:
I had been studying for 12 years by the time I graduated from high
school.
She had been living there since she was a child.
He had been teaching for 12 years before he was certified.
The past perfect progressive can also describe a recently completed
action. For instance:
My clothes were wet because it had been raining.
He was talking loudly because he had been drinking.
Future Perfect Progressive
We will end with the future perfect progressive. The future perfect
progressive describes the duration of an action as it relates to a
future event.
There are two ways to form the future perfect progressive. Both require
two actions. One is by using “will have been” plus a present participle,
followed by “when” or “by the time” and the second action.
For example, “I will have been working for 35 years by the time I
retire.” Notice that the second planned action, retire, is in the simple
present. The simple future is never used with the second action.
The other way to form the future perfect progressive is using “be going
to have been” plus a present participle followed by “when” or “by the
time” and the second action. The order of the actions can be reversed
with either form.
For example, “By the time the plane arrives, I am going to have been
waiting for five hours.”
With the future perfect progressive, it is not always clear if the –ing
verb started in the past or will start in the future. For example, “The
doctor will have been working for 24 hours by the time his shift is
finished.”
The future perfect progressive is rare because it is difficult to know
the duration of an activity relative to another future event.
TAMBIÉN TE PUEDE
INTERESAR:
¿Quieres recibir en tu e-mail gratis y
periódicamente ejercicios, programas gratuitos, explicaciones y otros recursos
para mantener tu inglés sin esfuerzo? Apúntate a nuestro
cuaderno mensual de inglés.