Yes/No questions | Yes/No questions in Indirect Speech are not real questions so they do not have the word order of questions or a question mark (?); If and Whether have the same meaning. Be careful! Don’t say: I wonder if is that magazine interesting. Tell me if is that magazine interesting.
Have you finished this newspaper? Can I borrow your pen? | When the original question doesn’t have a question word, the indirect question has if or whether. As well as “ask” we can use “wonder” and ”want to know” to report questions. E.g. I’d like to know whether he liked the article. I wonder whether I could borrow your pen.
“When will I hear from David?” Jane asked herself. | Jane wondered when she would hear from David.
What’s the article about? Why did you have to take this book? When was this poem written? | Tell me what the article is about. Could you tell me why you had to take this book? I’d like to know when this poem was written.

Tag Questions
Question tags are short questions placed at the end of the statement.
Formation | Examples
auxiliary/modal verb+subject pronoun | You can drive a car, can’t you?
if the statement is positive the question tag is negative | She is coming to work, isn’t she?
if the statement is negative, the question tag is positive. | She isn’t coming to work, is she?
Question tags are asked with rising intonation, when we are not sure about some information and are asking for confirmation.
You have a driving licence, don’t you?
With falling intonation, when we are sure about some information and expect the listener to agree.
It’s quite cold today, isn’t it?
I am your best friend, aren’t I? Let’s go out tonight, shall we? This/That is an amazing story, isn’t it? Nothing is wrong, is it? There is no reason for him to come over, is there? They have got three children, haven’t they? She has lunch at 12 o’clock, doesn’t she? Everyone agreed with his proposal, didn’t they?