改为被动语态：We plant trees every spring.

改为被动语态：We plant trees every spring. They plant some trees every spring.（改为被动语态） We plant many trees in spring every year （改为被动语态） 英语被动语态转换快1)We should plant trees in spring.(改为被动语态）Trees in 改为被动语态和同义句They plant many trees on the hill every spring.Man 改被动语态 '1.We plant trees every spring.2.They took the boy to 变成被动语态 People plant trees every spring we often plant trees in spring怎么变被动语态 We plant trees around our school every year改为被动语态 People plant hundreds of trees every year 改为被动语态 We plant trees every years.转换被动语态 We should plant trees in spring.改成被动语态怎样改?