有关被动语态,求助各位高手!请问：过去将来时被动语态的句型是什么?请列举一下时态是过去将来时且为被动语态的肯定句、否定句

1,过去将来时被动语态的句型是：主语+would+be+done（+by sb）

2,相关例句：
（1）肯定句：His brother said that the homework would be finished by him in half an hour.
（2）否定句：His brother said that the homework wouldn't be finished by him in half an hour.
（3）一般疑问句：Would the machine be repaired by these workers the next day?
（4）特殊疑问句：When would the small garden be swept by the students of Class One the next time?

3,相关提醒：因为过去将来时是指从过去的某个时间来看,将要发生的动作.所以这个时态常用于宾语从句中,且这个宾语从句前面主句的谓语动词常为一般过去时.
例如：Yesterday the student told his parents that the knowledge would be taught by his teacher the next term.

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