certainlyとは 意味・定義・例文
Adverb 副詞
サ〜トンリ US /ˈsɜrtənli/ UK /ˈsɜːtnli/
1. with certainty; without any doubt
確かに
He certainly is a good actor.
ええ, もちろん
"Will you open the door for me, please?" "Certainly."