❸(人が)確信して, 疑わない; (物事が)確かで (sure) ⦣ 名詞の前にはつけない. possible関連語
I think I'm right, but I'm not certain.
I think I'm right, but I'm not certain.
私は自分が正しいと思いますが, 確信はありません.
I'm certain of his success.=I'm certain that he will succeed.
I'm certain of his success.=I'm certain that he will succeed.
私は彼の成功を確信する[彼は必ず成功すると思う].
It is certain that the earth is round.
It is certain that the earth is round.
地球が丸いのは確かだ.
⦣ It=that 以下.