Lesson 7. Tag question (付加疑問文)

Today was fine day, wasn't you? You study English, don't you? ... Tag question is often used in English conversations. It is a small question and added at the end of phrase. I want to use the expression naturally.

Following sentences are examples quoted from Wikipedia,

Open the window, will you?
She doesn't really want that, does she?
You'd better stop now, hadn't you?
So you thought it would be a good idea to reprogram the computer, did you?
It's quite an achievement, isn't it, to win a Nobel prize!
Oh I must, must I?
I just adore Beethoven, don't you?
I'm coming with you, all right?
You've been there, right?
Easier said than done, eh?
You went there, no?