被动语态怎么分..?

基本结构is/am/are+Ved 即"是+动词的过去分词"

如:1.The machine is made. 机器被制造.
2.I am called Xiao li. 我被叫做小李.
3.These chairs are painted white.这些椅子被漆成白色.
如果表示过去放生的被动语态,把"是"变成过去式was/were即可.
例如:The machine was made yesterday. 这机器昨天被制造.
I was called Xiao Li before .Now I am 78.我以前被叫小李.现在已78.
These chairs were painted white just now.这些椅子刚才被漆成白色了.

be动词+动词过去分词
例如 He is named Tom.

被动语态一般是物做主语 主语是动作的承受者 for eg:Trees are planted by us every year. 树是被种的 是动作的承受者 一般会翻译 句子中有被就是被动语态