I've had my car for 15 years old . It has never broken down
`->` My car ......
MĐQH 

Answer: My car which I have had for 15 years, has never broken down

`->` which: ĐTQH thay thế cho vật hoặc tân ngữ chỉ vật

`->` HTHT: S + have/has + VpII

`->` break down (pv): hỏng

$#Lúa$

`to` My car, which I’ve had for 15 years, has never broken down

`_` break down `=>` broken down (adj):  hỏng

`_` which: đại từ quan hệ

`_` Cấu trúc: Hiện Tại Hoàn Thành

`+)` S + has/ have + V(cột 3/ ed) +….

`-)` S + has/ have + not + V(ed/cột 3)+…..

`?)` Has/Have + S + V(ed/cột 3) +…..

`_` Yes, S + have/has

`_` No, S + have/has + not

`_` S (số ít) + has

`_` S (số nhiều) + have