He will probably win. (=It is probable that he will win.)
He will probably win. It is probable that he will win.
おそらく彼が勝つでしょう.
Will he pass the exam?—Probably [Probably not].
会話Will he pass the exam?—Probably [Probably not].
彼は試験にパスするでしょうか.—おそらくね[おそらくしないでしょう].
