1、肯定句:主语+be+过去分词+(by...).
2、否定句:主语+be not+过去分词+(by...).
3、一般疑问句:Be+主语+过去分词+(by...)?
4、特殊疑问句:疑问词+be+主语+过去分词+(by...)?
5、被动语态的时态是由be的时态决定的,be是什么时态,全句就是什么时态,be动词后面的过去分词不变。
以动词give为例,其被动语态的各种时态构成如下:
1、一般现在时
History is made by the people.
历史是人民创造的。
2、一般过去时
These new cars were made in Tianjing in 1994.
这些新车是1994年在天津生产的。
3、一般将来时
Li Ming will be asked to attend the lecture.
李明将被邀请参加讲座。
4、现在进行时
A new railway is being built.
一条新铁路正在修建。
5、过去进行时
The roads were being widened.
路那时正在加宽。
6、现在完成时
He has been sent to work in Shanghai.
他已经被派往去上海工作了。
7、过去完成时
A new hotel had been built when I got there.
我到那儿时,一座新旅馆已经建好了。
8、过去将来时
He said a new hotel would be built in two months.
他说两个月后新旅馆就会建好了的。