When was the personal computer invented
如果刚接触到被动语态,对疑问句感到困难,那么给你个办法：
第一步：先把问句变成肯定句：They invented the personal computer .
第二步：再把这句变成被动句,记得句首加上特殊疑问词,即得到上面的答案.
是否可以解决您的问题?
When did they invent the personal computer.用被动语态改写
3个回答
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