What sould the adjectives these and those should be used only with?

The adjectives "these" and "those" are used with plural nouns or nouns that refer to a group of things. They indicate proximity to the speaker.

* These is used for things that are close to the speaker.

* Those is used for things that are far from the speaker.

Here are some examples:

These

* These apples are ripe. (The apples are close to the speaker)

* These people are my friends. (The people are close to the speaker)

* These books are interesting. (The books are close to the speaker)

Those

* Those cars are expensive. (The cars are far from the speaker)

* Those mountains are beautiful. (The mountains are far from the speaker)

* Those cookies are delicious. (The cookies are far from the speaker)

Note:

* "These" and "those" can also be used with plural pronouns, such as "we," "they," and "you."

* They are not used with singular nouns. For singular nouns, we use "this" and "that".

Incorrect usage:

* These book is interesting. (Incorrect: should be "This book is interesting")

* Those apple is ripe. (Incorrect: should be "That apple is ripe")

Remember that "these" and "those" are demonstrative adjectives, used to point out specific things. They are not used to describe the qualities of nouns.