1.My daughters/already/do/their homework. They/play/computer games/now.

2. This app/enable/more people/study/online/since/its invention.

GIÚP EM VỚI. EM ĐANG CẦN GẤP. EM CẢM ƠN Ạ

1. My daughters have already done their homework. They are playing computer games now.

2. This app has enabled more people to study online since its invention.

`color{red}{#lgdr}`

`1` My daughters have already done their homework . They are playing computer games now .

`-` already : hiện tại hoàn thành .

`=>` S + have/has + V3/Vpp + O .

`-` now : hiện tại tiếp diễn .

`=>` S + is/am/are + V_ing + O .

`2` This app has enabled more people to study online since its invention .

`-` since + mốc thời gian : hiện tại hoàn thành .

`=>` S + have/has + V3/Vpp + O .