1. Do you want to know more?

(What is the part of speech of 'more'? Is it an adjective or an adverb?)

2. Look at this map of Dokdo.
3. Look at this map of Dokdo's.
4. Look at this Dokdo's map.

(Dokdo is a small island. Which one is right? #4 is incorrect. What about the others? Which one is correct?) •English - Ms. Sue, Friday, September 30, 2016 at 10:44pm
In this sentence, "more" is a noun, the direct object of the verb "know."

2 is the only correct sentence.
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5. Look at this picture of John.
6. Look at this picture of John's.
(Are both OK? Sentence 1 means "John is in the picture. Am I right?)

2. Look at this map of Dokdo.
(This one means that Dokdo is on this map? Am I right?)

1. "More" is a noun in this sentence. It's the direct object of the verb "know."

http://www.dictionary.com/browse/more?s=t

Only 2 is correct.

5 is correct. 6 is wrong

"Look at this picture of John." and "Look at this picture of John's." are both correctly written sentence. The first implies that the picture has John on it. It was a picture taken of him. The second sentence implies possession. The picture belongs to John.

The sentence, "Look at this map of Dokdo." does mean that Dokdo is on the map, yes. The map shows an overview of the island of Dokdo.

Thank you. Dokdo is an island.

So....
2. Look at this map of Dokdo.
3. Look at this map of Dokdo's.

#2 is correct? What about #3? Dokdo is an island not animal, so isn't this expression wrong?

You are right -- #3 is not correct.

1. In the sentence "Do you want to know more?" the word "more" is being used as a noun, specifically as the direct object of the verb "know." So, in this case, "more" is not functioning as either an adjective or an adverb.

2. The correct sentence would be "Look at this map of Dokdo." This sentence implies that the map being referred to is specifically about or related to Dokdo, indicating that the island is the subject of the map.

3. The sentence "Look at this map of Dokdo's" is grammatically incorrect. The possessive form "Dokdo's" suggests that something belongs to or is owned by Dokdo, but it doesn't make sense in the context of referring to a map.

4. The sentence "Look at this Dokdo's map" is also incorrect. The correct syntax should be "Look at Dokdo's map" without the possessive "this."

5. Yes, both sentences are applicable. Sentence 5, "Look at this picture of John," implies that John is the subject of the picture, meaning that he is the one being depicted in it.

6. On the other hand, sentence 6, "Look at this picture of John's," suggests that the picture belongs to John, possibly indicating that he took or owns the picture.