(英文) used when evidence is present to confirm the speaker's predictions, judgements or observations
(英) Your stomach is growling. You must be hungry, right?
(英) You've got time to visit me. You must have broken up with your girl, haven't you?
(英文) added after an adjective, used for bragging
(英) I got straight A's in all subjects this year. It really was something, wasn't it?
(英) This is cool isn't it?
(英文) added to sentences pertaining to one's ability or achievement, in order to belittle the listener
(英) You didn't expect this, did you?
(英) You went out of breath after running for a short distance, didn't you?
(英文) used to affirm one's stance, belief or decision
(英) No, no, they really hadn't gone out. Believe me.
(英) I really can't come.