On that day everyone eats mooncakes.

过节那天大家都吃月饼。

Shall we go to the park?

我们去公园玩好吗？

There are eighteen floors in the building, and he lives on the fifteenth floor.

这幢大楼有18层。他住在第15层。

You'd better find it quickly. Oh, too late.

你最好赶快找到它。啊，太迟了。

You need to wear lots of warm clothes.

人们要穿很多的保暖的衣服。

Mum,Chen Hui's coming tonight.

妈，陈慧今晚来。