I found sth useful!
Use too when you want to express excess.
The coffee was too hot. I couldn't drink it.
The coffee was too hot to drink.
My pants are too long. I have to shorten them.
I'm sorry, I can't go to that restaurant. It's too expensive.
Use very when you want to intensify an adjective.
I was very young when I read that book.
José likes feijoada very much.
It's very dark out tonight.
That restaurant is very expensive. I'll go there when I get paid.
Use so when you want to show a cause and effect.
Samuél was so late that he missed most of the concert.
My car is so old that I'm going to have to get rid of it.
It was so dark outside that Agnes tripped over my bicycle.
The restaurant was so expensive that César had to borrow money from his girlfriend.