This, that, these, those

THIS, THAT, THESE, THOSE

Let's delve into the grammar of "this," "that," "these," and "those." These words are demonstrative pronouns or determiners used to indicate the proximity or distance of objects or ideas in relation to the speaker.

1. "This" is used to refer to a singular object or idea that is close to the speaker in terms of physical distance or time. It is used for something that is singular and near the speaker in the present or immediate context. 

For example:

   - "This book is interesting." (Referring to a book close to the speaker)

   - "I want to eat this cake." (Referring to a cake close to the speaker)

   - "This is my favorite song." (Referring to a song playing at the moment)

2. "That" is used to refer to a singular object or idea that is farther away from the speaker in terms of physical distance or time. It is used for something that is singular and distant from the speaker in the present or immediate context. 

For example:

   - "That house is beautiful." (Referring to a house farther away from the speaker)

   - "Can you pass me that pen?" (Referring to a pen on the other side of the table)

   - "That movie was amazing." (Referring to a movie the speaker watched earlier)

3. "These" is the plural form of "this" and is used to refer to multiple objects or ideas that are close to the speaker in terms of physical distance or time. It is used for multiple items or concepts that are near the speaker in the present or immediate context. 

For example:

   - "These books are heavy." (Referring to books close to the speaker)

   - "I like these shoes." (Referring to shoes the speaker is holding)

   - "These are my favorite flowers." (Referring to flowers in front of the speaker)

4. "Those" is the plural form of "that" and is used to refer to multiple objects or ideas that are farther away from the speaker in terms of physical distance or time. It is used for multiple items or concepts that are distant from the speaker in the present or immediate context. For example:

   - "Those buildings are tall." (Referring to buildings far away from the speaker)

   - "Can you bring me those books?" (Referring to books on a shelf across the room)

   - "Those are the pictures I took on my trip." (Referring to pictures displayed on a screen)

Remember, the choice of "this," "that," "these," or "those" depends on the number and proximity of the objects or ideas in relation to the speaker.