1.Mr.Brown began teaching Japanese ten years go. ->Mr.Brown has................... 2,We haven't seen Ann for years. ->It's.......... 3.John has been learning French for 3 years. ->John began............... 4.They haven't seen their uncle for ten years. ->It's...................... 5.The last time I saw him was in 1995. ->I haven't.................. 6.It's five years since I last saw her. ->I haven't............ 7.Tom was ill.He became ill 3 days ago. ->Tom has............ 8.He began investigating the case a week ago. ->He has........ 9.The last time I saw was in 1986. ->I haven't................... 10,When did you buy this house? ->How long is it.............. 11,I last saw him when I was a student. ->I haven't............ 12.Jane hasn't come here since 1999. ->The last time.................. 13.He spent an hour doing this work. ->It took.............. 14.My brother started working in this hotel six months ago. ->My brother................. GIUP MK VƠI Ạ MK ĐANG CẦN GÂP

`1.`Mr.Brown has been teaching Japanese for ten years.

`-` S + started / began + V-ing / to V + time + ago / in + mốc thời gian ...

`=` S + have / has + Ved / V3 + for / since

`2.` It's `4` years since we last saw Ann.

`-` S + have / has + not + Ved / V3 + for / since

`=` It's + time + since + S + last + Ved / V2

`3.` John began learning French three years ago.

`-` S + started / began + V-ing / to V + time + ago / in + mốc thời gian ...

`=` S + have / has + Ved / V3 + for / since

`4.` It's been ten years since they last saw their uncle.

`-` S + have / has + not + Ved / V3 + for / since

`=` It's + time + since + S + last + Ved / V2

`5.` I haven't seen him since `1995`.

`-` The last time + S + Ved / V2 + was + time + ago

`=` S + have / has + not + Ved / V3 + since / for

`6.` I haven't seen her in five years.

`-` It's + time + since + S + last + Ved / V2

`=` S + have / has + not + Ved / V3 + since / for

`7.` Tom has been ill for three days.

`-` QKĐ : S + was / were + N / adj

`-` HTHT : S + have / has + Vpp

`8.` He has been investigating the case for a week.

`-` S + started / began + V-ing / to V + time + ago / in + mốc thời gian ...

`=` S + have / has + Ved / V3 + for / since

`9.` I haven't seen him since `1986.`

`-` The last time + S + Ved / V2 + was + time + ago

`=` S + have / has + not + Ved / V3 + since / for

`10.` How long is it since you bought this house?

`-` QKĐ `->` HTHT 

`11.` I haven't seen him since I was a student.

`-` S + last + Ved / V2 + time + ago / in + mốc thời gian / when + clause

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

`12.` The last time Jane came here was in 1999.

`-` The last time + S + Ved / V2 + was + time + agi

`=` S + have / has + not + Ved / V3 + since / for

`13.` It took him an hour to do this work.

`-` S + spend / spent + time + V-ing

`=` It + take / took + time + to V : giành thời gian làm gì ...

`14.` My brother has been working in this hotel for six months.

`-` S + started / began + V-ing / to V + time + ago / in + mốc thời gian ...

`=` S + have / has + Ved / V3 + for / since

`1,` Mr. Brown has been teaching Japanese for ten years.

`2,` It's 4 years since we last saw Ann.

`3,` John began learning French three years ago.

`4,` It's been ten years since they last saw their uncle.

`5,` I haven't seen him since 1995.

`6,` I haven't seen her in five years.

`7,` Tom has been ill for three days.

`8,` He has been investigating the case for a week.

`9,` I haven't seen him since 1986.

`10,` How long is it since you bought this house?

- When + did + S + V (bare) ? 

~ How long it is + since + S + V2/ed ?

`11,` I haven't seen him since I was a student.

`12,` The last time Jane came here was in 1999.

`13,` It took him an hour to do this work.

- S + spend + TG + doing sth : dành thời gian làm gì 

~ It + takes (took) + TG + to do sth : mất bao lâu để làm gì

`14,` My brother has been working in this hotel for six months.

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- S + started / began + to V / Ving + thời gian trong quá khứ

~ The last time + S + V2/ed + was + thời gian trong quá khứ

~ It + be + thời gian + since + S + V2/ed + ...

~ S + has/have + (not) + P2 + for + khoảng thời gian / since + mốc thời gian

~ S + has/have + been + V-ing + ... ( HTHTTD - nhấn mạnh tính liên tục )