7.He hasnt played tennis since 1990. The last time . 8.I havent met her for 2 months. The last time . 9.Tom began playing the piano 4 years ago. Tom has . 10. I started cooking for the party 4 hours ago. I have . 11.The Browns have been living in London for 20 years. The Browns began . 12. John has worked for this electronics firm since 1999. John started . 13. How long have you studied English? When .

`-` S + haven't / hasn't + VpII + for time / since timeline : Chưa làm gì

`=>` The last time + S + Ved / V2 + was + time / timeline : Lần cuối làm gì

`-` S + have / has + VpII + for time / since timeline : Đã làm gì

`-` S + have / has + been + V-ing + for time / since timeline : Đang làm gì

`=>` S + started / began + V-ing / to V + time / timeline : Đã bắt đầu làm gì

`-` How long + have / has + S + VpII ? : Đã làm bao lâu ?

`=>` When + did + S + start / begin + V-ing / to V ? : Đã bắt đầu làm từ khi nào ?

`7`.The last time he played tennis was in `1990`

`8`.The last time I met her was `2` months ago

`9`.Tom has played the piano for `4` years

`10`.I have cooked for the party for `4` hours

`11`.The Browns began to living in London `20` years ago

`12`.John started to work for this electronics film in `1999`

`13`.When did you began to study English `?`

`\text{# TF}`