YOU SAID:
Osaki can sing English but she can't speak a lot.
INTO JAPANESE
大崎は英語を歌うことができるが、彼女は多くを話すことはできません。
BACK INTO ENGLISH
Osaki can sing English, but she cannot talk a lot.
INTO JAPANESE
大崎は、英語を歌うことができるが、彼女はよくしゃべることはできません。
BACK INTO ENGLISH
Osaki can sing English, but she cannot talk a lot.
That didn't even make that much sense in English.