The Present perfect
We use the Present perfect to speak about actions that happened before now, and are unfinished or happened at an unspecified time.
Affirmative
Person + Have/Has + Past Participle
She has lived in London since 1998.
Negative
Person + Have/Has not + Past Participle
We haven’t been to Russia.
Interrogative
Have/Has + Person + Past Participle
Have you drank pomegranate juice?
Present perfect + for and since
FOR: We use for to talk about a period of time
(For two days, for a week, for seven years, for five minutes…)
SINCE: A point in time
Since 1988, since last week, since the minute I met you, since January.
Lucy has worked at the hospital since 2005.
Lucy has worked at the hospital for 13 years.
Matt has been a photographer since 2003.
Matt has been a photographer for 15 years.
They have been married since June
They have been married for three months.
