急求各种被动语态例句

Question

急求 一般过去时的被动语态例句 一般将来时的被动语态例句 过去将来时的被动语态 现在进行时的被动语态 现在完成时的被动语态 情态动词的被动语态 一个半小时之内要出答案我急用（要初中生能看懂的）

Answer 1

过去 Had done Would* have done
现在 Were/did Would* do
将来 Should do/were/were to do Would* do
例句：If there hadn’t been much rain in spring, we would have had a good harvest now. [过去]
If he smoked less, his cough might be well soon. [现在]
If the lecturer should be late, you would have to make a speech first. [将来]

主动: We must keep this in mind.
被动：This must be kept in mind.
我们必须把这个记在心里。

参考资料：http://baike.baidu.com/view/135.htm?fr=ala0

Answer 2

被动语态分四类，（8种时态，含情态动词的，(to)动词不定式，长宾语的）
例：You must cook supper this evening.
Supper must be cooken this evening.

This factory produces machine tools.
Machine tools are produced in this factory.
.
.
.