So I am reading the second series of the famous Harry Potter and right now I am going through the tenth chapter "The Rogue Bludger". The second section of this chapter starts with the following sentence:
Harry woke early on Saturday morning and lay for a while thinking about the coming Quidditch match.
With the current understanding of the English that I have, there seems to be some problem with the use of the verb lay in this sentence. Looking at the tense in which the situation is being described (Harry woke), we should have had laid instead of lay. Even if I assume that author, for some strange reason, wanted to use present tense in the second part of the sentence, she should have rathor used lays insted of lay. Am I missing something terrible because of my little knowledge of English? Thanks in advance.