Sentences without a subject: 下雨了。

非主谓句是由词或短语构成、不分主语和谓语的句子，口语中常用。 Some sentences have no subject at all. They are common in speech, especially for weather, greetings and short reactions: 下雨了。(It's raining.) 下雪了。真漂亮！ 对不起！ 没关系！ Chinese does not need a dummy “it” like English.

Examples

• 下雨了。

  Xià yǔ le.

  It's raining.

• 下雪了。

  Xià xuě le.

  It's snowing.

• 上课了。

  Shàngkè le.

  Class has started.