"it" vs "this" vs "that"

[subhajit123]

Hi there, "it", "this" or "that", which one should I use in the context.

• John got a new mobile. It's/that's/this is the second one he's bought this year.
• I got a new mobile last month. It/that's/this is the third one I have bought this year.

 

[emsr2d2]

Hi there, "it", "this" or "that", which one should I use in the context.

• John got a new mobile. It's the second one he's bought this year.
• I got a new mobile last month. It's the third one I have bought this year.

Above is what I would use.

 

[subhajit123]

Above is what I would use.

is using that and this grammatically wrong?

 

[Charlie Bernstein]

No. All of your examples are good and mean the same thing.

It would b more natural to say "I've" instead of "I have."