The demonstrative determiners this/thatthese/those point to something that is close or distant. The closeness can be in:

  • space  (next to the speaker, 20 metres from the speaker, 1000km from the speaker)
  • time  (now, yesterday, last week, next year)
 nearfar
singularthisthat
pluralthesethose

Like all determiners, demonstrative determiners come at the beginning of a noun phrase, so they come in front of any adjective(s).

Look at these example sentences:

  • I like this food.
  • I use these pens.
  • I have to do it this morning.
  • We don't meet these days.
  • Look at that  big cloud.
  • Can you see those birds?
  • Do you remember that  man we met last week?
  • Those  days on holiday were enjoyable.

sources : Original Link