什么是宾语从句始终使用陈述语序?

原句陈述的,语序不变
原句一般疑问,改为if/whether+陈述句
原句特殊疑问词,改为特殊疑问词（组）+其余部分（陈述语序）举例，谢谢例一：Where do you come from? He asked Lucy. 合并为一句：He asked Lucy where she comes from.Where do you come from是疑问语序，where she comes from是陈述语序。 例二：How old is Jim? She asked. 合并为一句：She asked how old Jim was. How old is Jim是疑问语序，how old Jim was是陈述语序。例三：Can you swim? She asked. 合并为一句：She asked if/whether you could swim. Can you swim是疑问语序，you could swim是陈述语序。个别单词不知道意思，解释一下1.他问露西她从哪来2.她问几母年龄多大了3.她问你能游泳吗