"This", "that", "these", "those" are used when representing something specific. "This" and "that" represent a singular noun. "These" and "those" represent plural nouns.
Demonstrative Pronouns: This or These
"This" and "these" are used when referring to something close to the speaker. "This" represents a singular noun. "These" represents a plural noun.
- This is my car.
- This is a good book.
- Is this too big for me?
- Is this ok with you?
- These are delicious.
- These are very uncomfortable.
- Are these mine?
- Can these come apart?
Demonstrative Pronouns: That or Those
"That" and "those" are used when referring to something far from the speaker. "That" represents a singular noun. "Those" represents a plural noun.
- That was built forty years ago.
- That is my neighbor.
- Is that dangerous?
- Is that mine?
- Those people are blocking traffic.
- Those flowers are beautiful.
- Are those reserved?
- Are those expensive?