当然 + Verb / 那 + 当然
当然 (dāngrán) means "of course" or "naturally" and is used as an adverb to express that something is obvious, expected, or self-evident. It can stand alone as a response or appear within a sentence before the verb. It conveys confident agreement or acknowledgment.
当然可以,你随时来找我。
Dāngrán kěyǐ, nǐ suíshí lái zhǎo wǒ.
Of course, you can come find me anytime.
他当然知道这件事。
Tā dāngrán zhīdào zhè jiàn shì.
He certainly knows about this.
学中文当然要多练习。
Xué Zhōngwén dāngrán yào duō liànxí.
Learning Chinese of course requires a lot of practice.