when was it developed和when it was developed的差别when was it developed和when it was developed这两者有什么差别when it was invented 是“当它被发明的时候”还是“当它发明的时候”？是被动语态还是宾语从句？

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when was it developed和when it was developed的差别
when was it developed和when it was developed这两者有什么差别
when it was invented 是“当它被发明的时候”还是“当它发明的时候”？是被动语态还是宾语从句？

第一句直接用作疑问句
第二句是陈述语气可作状语也可以做宾语从句
when it was invented应该是“当它被发明的时候”
be+过去分词表被动
它是被动语态
既可做宾语从句,也可以做时间状语从句
比如：
I don't know when it was invented.(做宾从）
I was 11 years old,when it was invented.(时从）

前面那句的意思是"它什么时候发展起来?"
后面那句的意思是"当它发展起来的时候"..
when it was invented是当它被发明的时候..因为前面是it.是"它"的意思.它不可能发明什么东西.
这一句是被动语态..

第一句是一般疑问句的什么时候发展的？
而第二句是一个宾语从句，还是什么从句，前面应该还要有一句话吧。
因为宾语从句引导词后面要用陈述句的语序。when就是这句的引导词。
when it was invented 是被动语态，是什么时候发明的。

上楼说得不错，补充下，做句子成分看，前面可以看成一个疑问句，后面那个却只能作一个条件部分，即后面还需有补充。

第一句是一般的问句，就是它是什么时候发明的。
第二句应该是陈述语气，就是当它被发明之后，然后接下面要说地话。

When was it taken When was it built? when was it when it was so warm it was not well developed 这里的well 是做形容词吗?为什么老师上课有说什么时候只能做身体好.能不能说it was not developed well将其做副词?或者把develope做动词? When was it的中文意思是什么 I Was There When It Happened 歌词 He was sleeping late when it arrived 求when it was me 中文歌词 It was s_ when I woke up. when was it invented?是人教版九册第几单元? 英语-Unit 9 When was it when it was my turn to it was sunday morning in may . when develope talent It was a cold night when he was on duty When+++and++++where+++was++++it++++that++++he++++was+++++born? yaoming was hurt .when was that?为啥不是when was it?