`1`. The last time I played the violin was 2 years ago.
⇒ I haven't played the violin for 2 years
`2`. The last time the team won the prize was a long time ago
⇒ The team hasn't won the prixe for a long time
`3`. She last did charity work 2 years ago
⇒ She hasn't done charity work for 2 years
`4`. The last time i wrote a letter was 5 years ago
⇒ I haven't written a letter for 5 years
`5`. My father stopped smoking in 2014
⇒ My father hasn't smoke since 2014
`6`. I last donated my blood 7 months ago
⇒ I haven't donated my blood for 7 months
`7`. when did you start doing charitable work?
⇒ How long have you done charitable work?
`8`. the last time she involved in community service was 2 months ago
⇒ She hasn't involved in community service for 2 months
`9`. she said: " I bagan working as an activist when i was 2 months ago
⇒ She said she she had begum working as an activist for 2 month.
`10`. My best friend gave up eating fast food last year
⇒ My best friend hasn't eaten fast food since last year.
Giải thích:
-S + started/began + doing sth + time + ago
=S + have/has + VpII + for + time
-When did + S + V?
= How long + have/has + S + VpII?
-This is the first time + S + have/has + VpII
= S + have/has + never + VpII + before.