1、一般疑问句直接将陈述句被动语态中的情态动词提前。如: Must this work be done at once?这项工作必须立即完成吗? Should your homework be finished before six?你的家庭作业应在六点前完成吗?
2、特殊疑问句由疑问词加上一般疑问句被动语态构成。如: When must this work be done?这工作必须在什么时候完成? Where can the lost book be found?这本失踪的书能在什么地方被找到?
3、反意疑问句借助情态动词构成附加疑问部分。如: This bridge can be built next year,can't it?这座桥能建成,是吗? This book shouldn't be taken out of the library,should it?这本书不应被带出图书馆,是吗?
扩展资料:
一般用法
1、一般现在时的被动语态构成:is / am / are +及物动词的过去分词
Our classroom is cleaned everyday.
I am asked to study hard by my mother.
Knives are used for cutting things.
2、一般过去时的被动语态构成:was / were + 及物动词的过去分词
The new shop was built last year.
Dinosaur eggs were laid long long ago.
3、现在完成时的被动语态构成:has / have + been +及物动词的过去分词
This book has been translated into many languages.
Many man-made satellites have been sent up into space by many countries.
4、一般将来时的被动语态构成:will+ be + 及物动词的过去分词
A new hospital will be built in our city.
Many more trees will be planted next year.
5、含有情态动词的被动语态构成:情态动词+ be + 及物动词的过去分词
Young trees must be watered often.
Your mistakes should be corrected right now.
The door may be locked inside.
Your homework can be handed in tomorrow.
6、现在进行时的被动语态构成:am / is / are + being +及物动词的过去分词
Uncle Wang is mending my bike now.→
My bike is being repaired by Tom now.
They are planting trees over there. →
Trees are being planted over there by them.
7、不定式的被动语态:to + be + 及物动词的过去分词
There are two books to be read. →
There are twenty more trees to be planted.
参考资料来源:百度百科-被动语态