`6.`I last played the violin 2 years ago.

`7.`The team hasn't won the prize for a long time.

`8.`The last time she did charity works was 2 years ago.

`9.`It's 5 years since I wrote a letter.

`=>`Cấu trúc viết lại câu `6,7,8,9` :

S + last + V2/ed + time

`=`The last time + S + V2/ed + was + time

`=`It's + time + since + S ( last ) + V2/ed

`=`S + have/has not + Vpp + since/for + time

`10.`My father has not smoked since 2014.

`=>`S + stopped + Ving + time ( thời gian trong quá khứ ) : Ai dừng làm gì...

`=`S + have/has not + Vpp + since/for + time

`6.` I last played the violin `2` years ago.

`+` The last time + S + V2/ed + was + khoảng tgian + ago. 

`=` S + last + V2/ed + khoảng tgian + ago 

`7.` The team has not won the prize for a long time

 `+` The last time + S + V2/ed + was + khoảng tgian + ago.

`=` S + have/has not + V3/ed + for + khoảng thời gian.

`8.` The last time she did charity was `2` years ago. 

`+` S + last + V2/ed + khoảng tgian + ago 

`=` The last time + S + V2/ed + was + khoảng tgian + ago. 

`9.` It's `5` years since I last wrote a letter.

 `+` The last time + S + V2/ed + was + khoảng tgian + ago.

`=` It's + time + since + S  ( + last ) + V2/ed

`10.` My father has not smoked since `2014`.

`+` S + stopped + V-ing/ to V + since + mốc thời gian.

`=` S + have/has not + V3/ed + since + mốc thời gian.