Base on my research, the reason why the Expository writing include more than just a fact, its because, it also need and evidence that could support the fact. I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications
1. They dark and gloomy sky started to downpour.
2. The humongous football stadium was jam packed with people standing shoulder to shoulder to watch the game
3. The woman became furious
Features that make this passage informal are:
a.) expression of subjective feelings - It's the way I make them.
c.) incomplete sentences - beat with a wire whisk. Done.
e.) first-person point of view - use of I.
1 - Marlow, Kurtz, Brick maker
2 - Narrative writing style
The red apple was juicy.
Did you see that blue car drive by?
That flower was very pretty.
I love reading large books, especially with colorful pictures.
The wagon was red and had brand new wheels.