this is used for when being close physically or when pointing on the object, and that is used for when the object is far or no pointing it.
When to use this that or it?
If its an object, we often use “it” as the pronoun. However, if the original noun is an idea or something non-tangible, we often use “that” or “this” as the pronoun. For example: Peter thinks we should get a bigger sign.
How do you explain this and that?
0:201:29How to Use This That These & Those | Grammar LessonsYouTube
Is Used to be correct grammar?
Because the d and t sounds in used to are blended into a single consonant in speech, people sometimes get confused about the spelling of the phrase. It may be that many people in fact say use to rather than used to, but since the pronunciations are essentially identical, it makes no difference.
What are this and that in grammar?
This, that, these and those are demonstratives. We use this, that, these and those to point to people and things. This and that are singular. These and those are plural. We use them as determiners and pronouns.