自明を形容詞一語で表現する場合と、文として表現する方法が考えられます。
ここでは、代表的な形容詞、文としての表現を示します。
It goes without saying that ~
It is needless to say that ~
例:彼がその問題の解決に重要な役割を果たしたことは言うまでもない。
It goes without saying that he played an important role in solving the problem.
It is needless to say that he played an important role in solving the problem.
独立不定詞として、次の表現も使えます。
Needless to say, he played an important role in solving the problem.
It is obvious that he played an important role in solving the problem.