adv. 无疑，确定；当然，行（用于回答）
词根：certain
adj.
certain 某一；必然的；确信；无疑的；有把握的
pron.
certain 某些；某几个
1.I certainly don't begrudge him the Nobel Prize.
我肯定不会妒忌他得了获诺贝尔奖。
2.Moby certainly has a fine ear for a tune.
莫比对音调的分辨能力一定很强。
3.The deal will certainly raise the company's international profile.
这宗交易肯定会提高这家公司的国际形象。
4.She's certainly brimful of energy.
她的确精力充沛。
5.He certainly was not unintelligent.
他绝对不傻。
6.He certainly liked spangly jackets.
他很喜爱缀满小亮片的夹克。
7."In any case you remained friends."—"Certainly."
“不管怎样，你们还是朋友。”—“那当然。”
8.'Certainly not,' he replied emphatically.
“当然不。”他断然回答道。
9.I'm certainly never going there again.
我肯定不会再去那里了。