I put 'do you know the book' without thinking. Is this not correct in the formal form?
It's only you if "Sie" is capitalized. In this case it's not, you can cleary see it as "sie", so it's "they"
In older English that is precisely how it was said. Read tge works of Shakespeare.
I wrote "they know the book?" which could be used as an english question too. I dont understand why it needs to be "do they" can someone please explain. thanks
why does the subject come after the verb? Is it when you are asking a question