判断下列句子是否是被动语态，如果是，请说出是什么时态的被动语态

Question

A new building will be built in our school next year

Should the lights be placed at both sides of the stage?

Our classroom must be cleaned every day

May I put my bike outside the school gate?

Answer 1

被动语态的结构式be+动词的过去分词，be和动词的过去分词共同做谓语，二者缺一不可。所以可以根据被动语态谓语动词的这个特点判定是不是被动语态。被动语态也有时态的变化，助动词be的时态就是被动语态的时态。因此：
第一个句子是一般将来时态的被动语态。 谓语动词是：will be built
第二个句子是含有情态动词的被动语态的疑问句形式。 谓语动词是：should be placed
第三个句子也是含有情态动词的被动语态的肯定句形式。 谓语动词是：must be cleaned
第四个句子不是被动语态 。 谓语动词是：may put （没有助动词be）

Answer 2

A new building will be built in our school next year
一般将来时的被动
Should the lights be placed at both sides of the stage?
一般现在时的被动
Our classroom must be cleaned every day
一般现在时的被动
May I put my bike outside the school gate?
不是被动

Answer 3

1.一般将来时态的被动语态
2.一般现在式的疑问句中的被动语态
3.一般现在时的被动语态
4.不是被动语态本回答被网友采纳