当然可以用英文表达有：Certainly、Absolutely、Of course.
certainly：adv.当然;肯定;无疑;确定;行。
absolutely：adv.(强调真实无误)绝对地，完全地;绝对不;完全没有;极其。
of course：adv.(尤用于赞同或不赞同某人时)当然；自然。
扩展资料
Weve certainly improved on last years figures.
我们的业绩的确超过了去年的数字。
Youve certainly made an excellent job of the kitchen.
你们把厨房弄得好极了。
Without treatment, she will almost certainly die.
要是不治疗，她十有八九会死。
The news was certainly a weight off my mind.
这个消息真是去掉了我心里的重担。
Im certainly never going there again.
我肯定不会再去那里了。
