What's the function of the word "ли" in the following contexts? I came across of this word in many sentences in a conversation book, and I really don't understand it and where I have to put it. Is there equivalent in English?
Есть ли у вас дети? (Have you got any children?)
Могу ли я пригласить вас на обед? (May I invite you to lunch?)
Is there equivalent in English?
— in British English it would beinnit
.