1. Thì hiện tại đơn (Present simple)

Chuyển sang câu bị động: English is spoken with my friend by me.

2. Thì quá khứ đơn (Past simple)

Chuyển sang câu bị động: A letter was written by her yesterday.

3. Thì hiện tài hoàn thành (Present perfect)

Chuyển sang câu bị động: English has been studied for 6 years.

4. Thì tương lai đơn (Future simple)

Chuyển sang câu bị động: Ha Long Bay will be visited next week.

1. I speak English witj my friend

=> English is spoken with my friend by me

2.She wrote a letter yesterday 

=> A letter was written by her yesterday 

3. We have studied English for 6 years

=> English has been studied by us for 6 years

4.They will visit Ha Long Bay next week

=> Ha Long Bay will be visited by them next week