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TermsEnglish (UK) · Present Perfect
For, Since & Ago
Use for with a length of time: for two hours, for ten years, for ages. Use since with the starting point: since 2018, since Monday, since I was a child. With the present perfect, both say how long something has lasted up to now: I have known her for six years. I have known her since we were at school.
- for + a period: works in any tense (I lived in Rome for three years.)
- since + a point in time or a clause: mostly with the present perfect, and in It's been three years since I last saw him.
- ago comes after the period and goes with the past simple: two years ago, five minutes ago. It counts back from now to a finished moment.
Never say since three years: say for three years. And never have moved here ten years ago: say moved here ten years ago.
Examples
- I have lived here for five years.
- She has worked at this school since 2020.
- We moved to this town three years ago.
- It's been a month since I last saw her.
Try it yourself
I have known Maria 2018.Show answer
I have known Maria since 2018.
We have been married twelve years.Show answer
We have been married for twelve years.
I moved here ten years .Show answer
I moved here ten years ago.
We haven't seen each other Christmas.Show answer
We haven't seen each other since Christmas.
She has been waiting two hours.Show answer
She has been waiting for two hours.
She left five minutes .Show answer
She left five minutes ago.
He has worked at the bank March.Show answer
He has worked at the bank since March.
I have lived in this house six months.Show answer
I have lived in this house for six months.
My grandfather died two years .Show answer
My grandfather died two years ago.
It has been raining this morning.Show answer
It has been raining since this morning.