How to use "This, that these, those" to stress who or what you are talking about?
I can use this/that/these/those noun when I want to stress who or what I am talking about. When I use them, they imply that there are other things of the same type being discussed, so that these need to be singled out from among the others. For example when I am talking about more festivals or more friends, I may have to specify which one am I talking about: that festival, that friend.
A: I go to festivals regularly. In fact, I was on a festival last night.
B: Was that festival fun?
(However, I can use "was it fun?" just as correctly.)
A: I bred some dogs. One of them bit me last night.
B: Is that (dog) a pit bull?
(However, I can use "is it a pit bull?" just as correctly.)
A: The cellphones at my house are the same these cellphones.
B: Do those cellphones work well?
(However, I can use "Do they work well?" just as correctly.)
Am I correct?