当然可以用英文怎么说?

certainly

英 [ˈsɜːtnli] 美 [ˈsɜːrtnli]

adv.当然;肯定;无疑;确定;行

例句：

1.I can certainly feel the effects of too many late nights.

我当然能感受到熬夜太多产生的影响。

2.Beating the world champions is certainly a big ask for the team.

这个队要打败世界冠军当然难度很大。

3.Certainly, the early years are crucial to a child's development.

毫无疑问，幼年对儿童的成长至关重要。

4.We've certainly improved on last year's figures.

我们的业绩的确超过了去年的数字。