Bonjour

les démonstratifs

a- This is the best movie I've seen this year.

b- These biscuits are really good, don't you think ?

c- I went to California last summer, that was a very nice trip.

d- That happened two weeks ago, I don't remember all the details?+.

d- Look here, this is my favourite teashop.

Normalement  "that" s'emploie pour le passé. Il marque l'éloignement alors que "this" et "these" marque une proximité.

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bonne fin de soirée ☺☺☺