giúp e vs ạ e cảm ơn

`14,` It's the first time I've seen that play.

- It's the first time + S + has/have + Vpp + O

= S + has/have + never + Vpp + O + before

`12,` We haven't seen our uncle for five months.

- S + last + Ved/V2 + O + time

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

`13,` It's ten years ago since I last heard this song.

- S + last + Ved/V2 + O + time

= It's + time + since + S + Ved/V2 + O

`14,` How long is it since you saw Tom?

- When + did + S + (last) + V-inf + O?

= How long is it since + S + Ved/V2 + O?

`15,` It's over a year since I last saw them.

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

= S + has/have + not + Vpp + O + for + time

`16,` We have lived here for fifteen years.

- S + started/began + to V/V-ing + O + time

= S + has/have + Vpp + O + for/since + time

`17,` Is this the first time have you played a computer game? 

14. It's the first time I've seen that play.

- This / It's + the first time + S + have / has + Ved / V3 : lần đấu tiên ai làm gì .

= S + have / has + not + Ved / V3 + before : ai chưa làm gì trước đó.

12. We haven't seen our uncle for five months.

-  S + last + Ved/V2 + O + time

= S + has / have + not + Ved / V3 + sb + for + khoảng thời gian / since + mốc thời gian.

13. It's ten years ago since I last heard this song.

-  S + last + Ved/V2 + O + time

= S + has / have + not + Ved / V3 + sb + for + khoảng thời gian / since + mốc thời gian.

14. How long is it since you saw Tom?

- When + did + S + V-infi?: ai đã làm gì.

= How long is it since + S + Ved / V2?

15. t's over a year since I last saw them.

-  S + last + Ved/V2 + O + time

= S + has / have + not + Ved / V3 + sb + for + khoảng thời gian / since + mốc thời gian.

16. We have lived here for fifteen years.

- S + have / has + Ved / V3 + for khoảng thời gian / since + mốc thời gian.

= S + started / began + V- ing / to V-infi + time.

17.  Is this the first time have you played a computer game? 

- This / It's + the first time + S + have / has + Ved / V3 : lần đấu tiên ai làm gì .