Question

1.who are you talking with on the phone? 2.who are talking with you on the phone ?

which one is right ,why?

Answer 1

第一句。
您可先将第一句转换成陈述句应为：you are talking with somebody on the phone.然后对人提问，疑问代词who放在句首，紧跟be动词，再加陈述句语序，最后加问号。
第二句转换成陈述句为某人现在正跟你讲话，好像不符合现在进行时态的逻辑，如果是第三者描述这件事的情景，句中的第三人sonebody作主语应该用过去进行时，如用现在进行时，语序应像第一句用you做主语。
我觉得第二句主要有人称和时态逻辑对应问题。
By the way,I'm not professional.

Answer 2

1对，2的语法，小学生都知道不对，who is talking with you........

追问

why,it seems that you are wrong..

Answer 3

who are talking with you on the phone!谁在跟你打电话

追问

Good!But why ? The first one is right ,too?

追答

who are you talking with on the phone?你在跟谁打电话！

追问

Are you sure? Are you professional either?