YOU SAID:
What is i can not speak japanese in japanese?
INTO JAPANESE
私は日本語で日本語を話すことができないか。
BACK INTO ENGLISH
I can't speak to Japan in Japan?
INTO JAPANESE
私は日本で日本に話すことができませんか?
BACK INTO ENGLISH
I can't speak to Japan in Japan?
That didn't even make that much sense in English.