Đáp án!
`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 prize 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 smoked 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 was involved in community service was 2 months ago
`->` She hasn't been involved in community service for 2 months
`9`. she said: " I began working as an activist when I was 2 months ago
`->` She said she had begun working as an activist for 2 months.
`10`. My best friend gave up eating fast food last year
`->` My best friend hasn't eaten fast food since last year.
`→` Quá khứ đơn: S + V(regular/ irregular) + O
S + did not + V + O
Did + S + Verb ?
`→` Hiện tại hoàn thành: S + have/ has + PII
S + haven’t/ hasn’t + PII.
Q: Have/Has + S + PII?
A: Yes, S + have/ has.
No, S + haven't / hasn't.