33. Lan didn’t meet her uncle a long time ago.

→ Lan hasn't met her uncle for a long time

31. Marx often jogged when he was young.

→ Marx used to jog when he was young.

34. It’s time for us to catch the bus.

→ It’s time we catched the bus

32.The working people have considered May Day a great holiday.

→ May Day has been considered a great holiday by the working people

Sau used to+V1

use to + V1

be used to +Ving

It's time for sb + to V

It's time + S+V2/ed

Câu bị động thì hiện tại hoàn thành

S+have/has+been+P2

`31.` Marx used to joke when he was young.

`\text{Used to: S + used to + Vinf + (O).}`

`32.` May Day has been considered a great holiday by the working people.

`\text{HT Hoàn thành bị động}`

S + has/have been + VPII + (by+ O).

`33.` Lan has not met her uncle for a long time.

`\text{HT hoàn thành}`

S + hasn't/haven't + VPII + (O).

`34.` It’s time we catched the bus.

`\text{It's time for sb to do sth = It's time sb + Ved/VPI + (O): đã đến lúc … phải làm gì}`