The demonstrative determiners this/that, these/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