`8` `C1` The last time Nam met her was three years ago  

`C2` Nam hasn't met her for three years ago 

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

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

`=` S + hasn't / haven't + Vpp + for + time

`-` Tạm dịch : Nam đã không gặp cô ấy trong `3` năm

`8.` Nam hasn't met her for three years.

= Nam last met her three years ago.

= The last time Nam met her was three years ago.

`-` Công thức : It's + time + since + S + last + Ved/V2.

`=` S + have/has + Ved/Vp2 + since/for ( since + mốc thời gian, for + khoảng thời gian ).

`=` S + last + Ved/V2 + time + ago ( lần cuối cùng làm gì ).

`=` The last time + S + Ved/V2 + was + time + ago.