Chuyển sang câu bị động 

21) My cousin will meet you at the station.

22) She is running her own company.

23) Visitors must leave umbrellas and raincoats in the cloakroom.

24) My mother used to make us clean the house.

25) John hasn't finished his home work.

`21.` You will be met at the station by my cousin

`-` Bị động TLĐ: S + will be + V3/ed + (by + O)
`22.` Her own company is being run by her

`-` Bị động HTTD: S + am/is/are + being + V3/ed + (by + O)
`23.` Umbrellas and raincoats must be left in the cloakroom by Visitors

`-` Bị động với ĐTKT `-` must:

S + must be + V3/ed + (by + O)
`24.` We used to be made to clean the house by my mother

`-` S1 + make + S2 + V_inf + O `=` S2 + tobe + made + to_V + (by + S1)

`25.` John's homework hasn't been finished by him

`-` Bị động HTHT: S + has/have  + been + V3/ed + (by + O)

`21.` You will be met at the station by my cousin

--TLĐ: will/shall+V → will/shall be+Vpp

`22.` Her own company is being ran.

--HTTD: tobe+Ving → tobe+being Vpp

`23.` Umbrellas and raincoats must be left in the cloakroom by visitors

--Động từ khuyết thiếu (must,..) + Vinf → ĐTKT+be Vpp

`24.` We used to be made to clean the house by my mother

--Used  to + Vinf → Used to be Vpp

`25.` His homework hasn't been finished.

--HTHT: have/has Vpp → have/has been Vpp

#BCh