你今天怎么来得这么晚？

Nǐ jīntiān zěnme lái de zhème wǎn?

How come you came so late today?

这个字你知道怎么写吗？

Zhè gè zì nǐ zhīdào zěnme xiě ma?

Do you know how to write this character?

你今天怎么样？

Nǐ jīntiān zěnmeyàng?

How are you today?