We use perfect aspect to look back from a specific time and talk about things up to that time or about things that are important at that time.
We use the present perfect to look back from the present:
I have always enjoyed working in Italy. [and I still do]
She has left home, so she cannot answer the phone.
We use the past perfect to look back from a time in the past:
It was 2006. I had enjoyed working in Italy for the past five years.
She had left home, so she could not answer the phone.
We use will with the perfect to look back from a time in the future:
By next year I will have worked in Italy for 15 years.
She will have left home by 8.30, so she will not be able to answer the phone.
Present perfect
We use the present perfect:
- for something that started in the past and continues in the present:
They’ve been married for nearly 50 years.
She has lived in Liverpool all her life.
- when we are talking about our experience up to the present:
I‘ve seen that film before.
I‘ve played the guitar ever since I was a teenager.
He has written three books and he is working on another one.
- for something that happened in the past but is important in the present:
I can’t get in the house. I‘ve lost my keys.
Teresa isn’t at home. I think she has gone shopping.
We normally use the present perfect continuous to emp
