1. The Walt Disney Studios, the famous movie company , has produced hundreds of cartoons for children. 

⇒  Hundreds of cartoons for children have been produced by the Walt Disney Studios, the famous movie comany.

- Bị động hiện tại hoàn thành: S + have/has + been + Vpp.

2. After she had left station , we came. 

⇒ By the time we came, she had left station.

- By the time + quá khứ đơn, quá khứ hoàn thành.

1. The Walt Disney Studios, the famous movie company, has produced hundreds of cartoons for children.
=> Hundreds of cartoons for children have been produced by the Walt Disney Studios, the famous movie comany.

2. After she had left station, we came. 

=> By the time we came, she had left station.

@hahoang207

Good luck!!!

Xin hay nhất + cảm ơn và 5* nhó!!!!!