《be ~》一理{いちり}あるcertainly: certainly adv. 確かに, 確実に.【副詞】He was almost certainly lying when he said that.彼がそう言ったときはまず間違いなくうそをついていたmost certainly絶対に間違いなくI most certainly will not go to his wedding.彼の結婚式にはまず確実に出席しません“I don't thincertainly not: それは駄目{だめ}だ、とんでもないcertainly!: certainly!畏まりましたかしこまりました