Ask the English God to help me analyze the grammar of this sentence (the snow has stopped)?

It's snowing. This sentence is a pronoun, which refers to the weather and acts as the subject. The snow has stopped.

Reason: This is a common usage of it, which can refer to natural phenomena such as time, weather, distance, temperature and environment.

In addition, it has other uses, as listed below:

It can refer to everything except people, meaning "it". This is a desk. This is a desk.

It can also refer to people of unknown sex. For example, who is knocking at the door? who ' s that knocking ?

It can also be used as a formal subject and object.

As a formal subject: Regular exercise is good for you. The real subject here is the infinitive compound structure for you to practice. Regular exercise is good for you.

As a formal object: Some verbs cannot take an object clause directly, so they must be used as a formal subject.

I don't like it? It? What time? Someone talked to me without seeing me. ? I don't like people not looking at me when they are talking to me.