• We use the Present Perfect/Past Simple for experiences that happened some time before now. We don’t know or don’t say when they happened.
• We use the Present Perfect/Past Simple if we say exactly when something happened.
He’s done a lot of work for charity
Danny started acting at the age of seven.
POSITIVE
l/you/we/they +
he/she/it +
NEGATIVE
l/you/we/they +
he/she/it +