简要回答
certainly是一个英语单词，副词，意为无疑;确定;肯定;当然;行。
学英语和学语文一样，基础都是单词（字词）的积累，那么下面小编就来和大家说说英语单词certainly的意思和用法示例。
详细内容
certainly
英 [ˈsɜːtnli]
美 [ˈsɜːrtnli]
adv.无疑;确定;肯定;当然;行
absolutely adv. 绝对地，当然
常用于加强语气，多用于口语中。
He was absolutely wrong.
他绝对错了。
certainly adv. 无疑，确定；当然
强调毫无疑问。
Certainly, he is a loser.
当然，他是个输家。
surely adv. [正式]必定，无疑
强调必然性，表示主观判断。
They can surely overcome these difficulties as long as they have enough money.
只要有足够的资金他们肯定能克服这些困难。
双语例句
The public is certainly getting tired of hearing about it.
关于此事，公众当然已经听腻了。
'In any case you remained friends.' — 'Certainly.'
“无论如何，你们都是好朋友吧。”——“那当然。”
'Perhaps it would be better if I withdrew altogether.' — 'Certainly not!'
“也许，我完全退出更好吧。”——“当然不是！”
The bombs are almost certainly part of a much bigger conspiracy.
几乎可以肯定，这些炸弹是一个更大的阴谋的一部分。
Today's inflation figure is certainly too high.
今天的通胀率确实太高了。
Certainly, pets can help children develop friendship skills.
宠物的确能够帮助孩子们培养交友技能。
I certainly don't remember talking to you at all.
我当然完全不记得和你讲过话。
