写三个被动语态的句子.一个表示将来,一个表示现在,一个表示过去.

These sentences will be copied by you.
These sentences are being copied by you now.
These sentences were copied by you.

呵呵，这个当是抛砖引玉了，楼主自己参考我的句子写出自己的句子来吧。

哈哈楼上的可真逗：）

Metal will be used for making machines. ---将来时的被动语态
Metal is used for making machines.---现在时的被动语态
Metal was used for making machines.---过去时的被动语态
意思是说‘铁被用于机器制造’

希望你好好领会一下，自己试着造一些句子，这样你的进步会很大的。

My dog was killed.
English is widely used around the world.
The trees will be planted tomorrow.

my car will be sold tomorrow.

my car is getting sold now.

my car was sold yesterday.