今天的天气很好。

Jīntiān de tiānqì hěn hǎo.

Today's weather is very good.

明天天气怎么样？

Míngtiān tiānqì zěnmeyàng?

How will the weather be tomorrow?

明天你有时间吗？

Míngtiān nǐ yǒu shíjiān ma?

Do you have time tomorrow?