These words are called demonstratives. Demonstratives tell who or what you are talking about. A pronoun is a word that is used instead of a noun or noun phrase. A determiner is a word that comes before a noun and is used to show which thing is being referred to.

Pronouns that point to specific things: this, that, these, and those, as in “This is an apple,” “Those are boys,” or “Take these to the clerk.” The same words are used as demonstrative adjectives when they modify nouns or pronouns: “this apple,” “those boys.”

A demonstrative pronoun is a pronoun that is used to point to something specific within a sentence. These pronouns can indicate items in space or time, and they can be either singular or plural.

The basic pronominal possessive determiners in Modern English are my, your, his, her, its, our, their and whose (as in Whose coat is this? and the man whose car was stolen). As noted above, they indicate definiteness, like the definite article the. Archaic forms include thy and mine/thine (for my/thy before a vowel).

Possessive pronouns indicate possession or belonging. Possessive determiners, also called possessive adjectives (my/your etc.), come before a noun, whereas, possessive pronouns (mine/yours etc.) replace a noun.

two types

In grammar, a demonstrative is a determiner or a pronoun that points to a particular noun or to the noun it replaces. There are four demonstratives in English: the “near” demonstratives this and these, and the “far” demonstratives that and those. This and that are singular; these and those are plural.

Prepositions express relationships such as space (place, position, direction), time, or figurative location. A preposition always has an object (usually a noun or pronoun).

The five types of prepositions are simple, double, compound, participle, and phrase prepositions. Prepositional phrases contain a preposition plus a noun or pronoun.

The following rules will help you understand and use prepositions correctly.

1. A preposition must have an object.
2. pre-position means place before.
3. A pronoun following a preposition should be in object form.
4. Preposition forms.
5. 5. to preposition and to infinitive are not the same.
6. The golden preposition rule.

3 Tips to Remember Prepositions

1. Memorize Through Grouping: there is such a long list of prepositions, that it will be much easier for you to remember them in smaller groups.
2. Repetition: practice, practice, practice.
3. Increase your Understanding of Prepositions: you only have to do this activity once.