YOU SAID:

i can't speak japanese but i speak chinese

INTO JAPANESE

日本語を話すことができないが、私は中国語を話す

BACK INTO ENGLISH

Can't speak to Japan, I speak Chinese

INTO JAPANESE

日本を話すことができない私は中国語を話す

BACK INTO ENGLISH

I can't speak Japan speaks Chinese

INTO JAPANESE

私が話すことができない日本が中国語を話す

BACK INTO ENGLISH

Japan can not speak I speak Chinese

INTO JAPANESE

日本を話すことができない私は中国語を話す

BACK INTO ENGLISH

I can't speak Japan speaks Chinese

INTO JAPANESE

私が話すことができない日本が中国語を話す

BACK INTO ENGLISH

Japan can not speak I speak Chinese