Is this sentence correct?? Is the use of 'in' two times correct?
You are already very good in the language I would like to converse with you in.
Thanks!
No, the second "in" is unnecessary and incorrect.
You are already very good in the language, and I would like to converse with you.
In any event, the sentence is awkward and stilted and I would use the name of the language instead of "the language".
You are fluent in English, and I would like to converse with you.
John