This / These

[jack]

Let's say I'm at a book store and I'm pointing at the book in my hand. I say:

What do these mean?
1. I would like two of this book. (Is this referring to the type of book becase I hear people say this but I don't get how can you get two books from (this) one book?)
2. I would like two of these books. (Referring to books?)

Thanks.

[Casiopea]

Let's say I'm at a book store and I'm pointing at the book in my hand. I say:

What do these mean?
1. I would like two of this book. (Is this referring to the type of book becase I hear people say this but I don't get how can you get two books from (this) one book?)
2. I would like two of these books. (Referring to books?)

Thanks.

"two of this book" is a variant for this book plus one more. If the speaker is holding only one book, then it would be odd to utter, "two of these books".

[jack]

If the speaker is holding only one book, then it would be odd to utter, "two of these books".

Let's say I'm at the book store and I'm pointing at a shelf full of books and the books are all the same and I say:

What do these mean?
1. I would like two of that book. (Is it possible to use this too?)
2. I would like two of those books.

[Tdol]

They're both possible. You could say 'two copies of that book' to be certain.

[jack]

Let's say I'm on the sidewalk and I'm looking at a car across the street and I say:

1. I have two of those. (I hear a lot of people that use 'those' but why? I only see one car? Or are they referring to that car in general?)
2. I have two of that. (I don't hear a lot of people say this? If this is correct, why? How can you have two of 'that' ?)

Thanks.