EDIT: Thank you for the answers, guys! I understand now. P.S.: I also found an article that my help people with the same doubt.
In "Alice's Adventures in Wonderland", I came across a sentence which I do not understand if it's correct.
So she lay on the floor and looked through the open door,
I realize you can use past and present in the same sentence, but, in this case, why would "lay" be in the present if it preceded "looked"?
If you need the context, here is the whole paragraph:
Then she saw another door, a door that was only forty centimetres high. The little gold key unlocked this door easily, but of course Alice could not get through it - she was much too big. So she lay on the floor and looked through the open door, into a beautiful garden with green trees and bright flowers.