REVISIÓN DE TIEMPOS VERBALES PERFECTOS.

REVISIÓN DE TIEMPOS VERBALES PERFECTOS.

Present perfect.

• The present perfect is formed from the present tense of the verb have and the past participle of a verb.

• for something that started in the past and continues in the present:

• They've been married for nearly fifty years.

When we are talking about our experience up to the present:

• I've seen that film before.

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We often use the adverb ever to talk about experience up to the present:

• My last birthday was the worst day I have ever had.

• https://learnenglish.britishcouncil.org/english-grammar-reference/present-perfect

have been and have gone

• We use have/has been when someone has gone to a place and returned:

• A: Where have you been?

  B: I've just been out to the supermarket.

But when someone has not returned, we use have/has gone:

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PRESENT PERFECT CONTINUOUS

The present perfect continuous is formed with have/has been and the -ing form of the verb.

• We normally use the present perfect continuous to emphasise that something is still continuing in the present:

• It's been raining for hours.

PAST PERFECT

The past perfect is made from the verb had and the past participle of a verb:

• I had finished the work.

The past perfect is used in the same way as the present perfect, but it refers to a time in the past, not the present. We use the past perfect:

• for something that started in the past and continued up to a given time in the past:

• When George died, he and Anne had been married for nearly fifty years.

We often use expressions with for and since with the past perfect:

• I was sorry when the factory closed. I had worked there for ten years. 

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PAST PERFECT CONTINUOUS.

The past perfect continuous is made from had been and the -ing form of a verb:

• I had been working there for a year.

• She didn't want to move. She had been living in Liverpool all her life.

For something that happened several times before a point in the past and continued after that point:

• He was a wonderful guitarist. He had been playing ever since he was a teenager.

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We often use expressions with for and since with the past perfect:

• I had been watching that programme every week since it started, but I missed the last episode. 

• https://learnenglish.britishcouncil.org/english-grammar-reference/past-perfect

FUTURE PERFECT

We use the future perfect simple (will/won't have + past participle) to talk about something that will be completed before a specific time in the future.

• The guests are coming at 8 p.m. I'll have finished cooking by then.

• On 9 October we'll have been married for 50 years.

• Will you have gone to bed when I get back?

We can use phrases like by or by the time (meaning 'at some point before') and in or in a day's time / in two months' time / in five years' time etc. (meaning 'at the end of this period') to give the time period in which the action will be completed.

• I won't have written all the reports by next week.

• By the time we arrive, the kids will have gone to bed.

• I'll have finished in an hour and then we can watch a film.

• https://learnenglish.britishcouncil.org/grammar/intermediate-to-upper-intermediate/future-continuous-and-future-perfect

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