The basic structure of the short answers to this on going (and equal to the verb "to be"):

The basic structure of the short answers to this on going (and equal to the verb "to be"): 

	Afirmative	Subject+verb to be	Negative	Subject+verb to be+not
	Yes,	I am.	No,	I'm not.
	Yes,	you are.	No,	you aren't. (you're not)
	Yes,	he is.	No,	he isn't. (he's not)
	Yes,	she is.	No,	she isn't. (she's not)
	Yes,	it is.	No,	it isn't. (it's not)
	Yes,	we are.	No,	we aren't. (we're not)
	Yes,	you are.	No,	you aren't. (you're not)
	Yes,	they are.	No,	they aren't. (they're not)