$\color{pink}{\text{209w'Darwin}}$

`1.` Mark started learning French two years ago.

`->` Mark has learned French for two years.

`=>` HTHT: S + have/has + V3 + ...

`2.` Yesterday, they cut down two old trees in the local park.

`->` Yesterday, two old trees were cut down in the local park.

`=>`Bị động: S (O) + be + V3 (by O(S))

`3.` How long have you had your new car?

`->` When did you get your new car?

`=>` How long: dùng với HTHT/ HTHT tiếp diễn

`=>` When: dùng với quá khứ đơn

`1.` Mark has learnt French for two years.

`-` S+ started/ began + V-ing+... + ago.

`=` S+ has/have + V3/V-ed +... for + khoảng tgian

`2.` Yesterday, they had two old tree cut down in the local park.

`-` cấu trúc: have sth done

`3.` When did you start having your new car?

`-` start doing sth: bắt đầu làm gì