Cấu trúc: S + have/has + V3/ed +O + for + khoảng thời gian = S + began/started + V-ing/to V + O + time + ago 1.They began making this cake an hour ago. => 2.That organization has raised funds to help the street children for eight years. => 3.Nam began to collect stamps a long time ago. => 4.It started to cry some minutes ago => 5.Her dad has taken part in community service for years => 6.That organization has raised funds to help the street children for eight years. => 7.We began learning here some weeks ago. => 8. Those mechanics have worked at this company for a long time. => 9..I started taking part in VEO 3 years ago. =>

`1->` they  have made this cake for an hour

`2->` That organization started raising funds to help the street children eight years ago

`3->` Nam has to collect stamps for a long time 

`4->` It has to cried for some minutes 

`5->` Her dad began taking part in community service years ago

`6->` That organization began raising funds to help the street children eight years ago

`7->` We have learned here for some weeks 

`8->` Those mechanics began working at this company a long time ago

`9->` I have taken part in VEO for 3 years 

`-----`

S `+` have/has `+` V3/ed `+`O `+ `for `+` khoảng thời gian

`=` S `+` began/started `+` V-ing/to V `+` O `+` time `+` ago

`1.` They has made this cake for an hour.

`2.` That organization started to help the street children eight years ago.

`3.` Nam has collected for stamps a long time .

`4.` It has cried for some minutes.

`5.` Her dad began to take part in community service years ago.

`6.` That organization began helping the street children eight years ago.

`7.` We have learnt here for some weeks.

`8.` Those mechanics started working  this company a long time ago. 

`9.` I have taken part in VEO for `3` years.

`××××××××××××`

`-` Began/Started + Ving/to V : Bắt đầu làm gì

`=` S + have/has + P2 + since/for + thời gian

`star` Lưu ý :

`-` Since + mốc thời gian.

`-` For + khoảng thời gian.