YOU SAID:
He can speak French... in Russian.
INTO JAPANESE
彼はロシア語でフランス語を話すことができます。
BACK INTO ENGLISH
He can speak in the Russia, France.
INTO JAPANESE
彼はロシア、フランスで話すことができます。
BACK INTO ENGLISH
He was speaking in Russia and France.
INTO JAPANESE
彼はロシアおよびフランスで話していた。
BACK INTO ENGLISH
He was speaking in Russia and France.
You've done this before, haven't you.