this

Compared to its counterpart that, this has fewer functions.

As a pronoun, this stands in place of a singular noun that is present or near in time or thought, or that has just been mentioned.

It can also introduce what is to come next (listen to this).

This (along with that, these, and those) is also a determiner, a special kind of adjective that specifies the following noun: This house is the one I was telling you about.

When this is an adverb it works much like that as an adverb: it must be accompanied by a gesture, or by reference to something abstract that will be understood: she caught a fish this big, I’ve never had to pay this much for a ticket.