When referring to objects, we use this (singular) and these (plural) to talk about things that are near to the speaker. We use that (singular) and those (plural) to talk about things that are not near to the speaker.
We also use this to introduce other people:
Talking about time, we usually use this to refer to the present:
We use that to talk about the past:
|Basic summary of when to use these nouns.||Inglês Minuto|
|Easy rule and explanation for when to use 'this' or 'that'.||Blog da Focus|
|How to use 'this' and 'that' when talking about physical objects and time.||English with Nick|