1：英语中语态有两种：主动语态和被动语态.
语态的作用：语态是动词的一种形式,用来说明主语和谓语之间的关系.
语态的选用：如果主语是动作的执行者,谓语用主动语态.
例如：We clean the room every day.
如果主语是动作的承受者,或者说是动作的对象,谓语则是要用被动语态.
例如：The room is cleaned every day.
被动语态由“助动词be + 急务动词的过去分词”构成.助动词be 有人称、数和事态的变化,其变化规则与be 作为连系动词时完全一样.
2：被动语态的各种形式
1) am/is/are +done
eg1：I'm asked to take care of myself. Football is played all over the world.
eg2：Football is not played all over the world.
eg3: Is football played all over the world?
这些玩具是中国制造的.
这个小偷是在那家超级市场被抓住的.
2）has /have been done
eg1：This book has been translated (翻译) into many foreign languages.
eg2：This book has not been translated into many foreign languages.
eg3: Has this book been translated into many foreign languages?
那两把伞已经送给了我父母.
今天这首歌已经被唱了几次了?
3）am/is /are being done
eg1：A road is being built around the mountain.
eg2：A road is not being built around the mountain.
eg3: Is a road being built around the mountain?
我们不能搬进新房间因为它正在油漆.
4） was/were done
eg1：This house was built in 1958.
eg2：This house was not built in 1958.
eg3: Was this house built in 1958?
昨天上午这条裙子被卖走了.
我的书在哪里?刚才它被放在桌子上得.
5) was/were being done
eg1：Meeting was being held when I was there.
eg2：Meeting was not being held when I was there.
eg3: Was meeting being held when you were there?
6) shall/will be done
eg1：He will be taken to hospital tomorrow.
eg2：He will not be taken to hospital tomorrow.
eg3: Will he be taken to hospital tomorrow?
