this :
pronoun
1.
used to identify a specific person or thing close at hand or being indicated or experienced.
"is this your bag?"
2.
referring to a specific thing just mentioned.
"the company was transformed and Ward had played a vital role in bringing this about"
determiner
1.
used to identify a specific person or thing close at hand or being indicated or experienced.
"don't listen to this guy"
2.
referring to a specific thing just mentioned.
"there was a court case resulting from this incident"
adverb
to the degree or extent indicated.
"they can't handle a job this big"
