Ask in French.

1. In the first sentence, I looked up the French word gradual progress, and it seems that I seldom say it. Generally speaking, I said that Il Y Adu vented.

When expressing the weather, you can use ilfait+adj

You can also use ilfait+nomet adj. But nouns usually add indefinite articles. Like a beautiful reporter.

Or il y a +nom nouns usually add some articles. It's like Adu's vent.

2.on is a pronoun, commonly used in spoken language, which generally replaces nous and also means "we" here. But sometimes it also means "everyone, everyone" or "someone, someone". It depends on the specific situation.