This lesson will be about two interesting usages of の. The first will be about its unique role in attribute clauses in which it is sometimes interchangeable with が. We will then learn how の can even be used like a noun!
の may be used to mark the thing or person carrying out an action that is the attribute of something. In other words, it may replace が. This is only seen in attributive expressions.
A snowy night
（What about) the bag with the documents?
It's really really true, it's a story without any lies.
Particle Note: Sometimes の is required when there is still a sense of possession. This is the case for Exs. 4 and 5.
I can hear the voices of kids playing in the park.
The ground's instability continues.
Grammar Note: Japanese usually allows the use of either が or を in an attribute clause, and length doesn't have much to do with the decision unless the phrase is excessively long, in which case が is often obligatory. One case, though, in which が is clearly obligatory is when a dummy noun is used to attach to an otherwise independent clause.
Think of patterns involving こと. You can't say ～XのYことができる. Below,  brackets enclose attribute phrases. The nouns they modify will be right outside the right bracket.
With the northern municipalities with little population completing operation, voting results are planned to be announced one by one.
From NHK on September 9, 2014.
7. 独立への賛成が反対を上回れば、投票率に関係なく、［スコットランドのイギリスからの独立が決まる］ことになり、 イギリスの公共放送BBCは終夜、開票速報番組を放送するなど、関心の高さを示しています。
From NHK on September 9, 2014.
In disregard to voter turnout, if supporters for independence surpass the opposition, the decision for whether Scotland receives independence from England is made, and the British public broadcasting network BBC is showing its heightened interest in the matter by airing a voting result program all night.
Practice (1): Translate the following. You may use a dictionary.
1. A mother that likes video games. 2. A rainy day. 3. Her pencil. 4. Apartment in New York.
The Nominalizer の
It may also be used as a nominalizer. 読むのが好きだ = I like reading; の makes 読む a noun. This usage of の is very interesting grammatically as it is treated like a dumby noun. So, it may be best to not think of it as a particle in this context.
I like to swim/I like swimming.
I don't like to sing.
Buying that is useless.
Practice (2): Translate the following. You may use a dictionary.
1. I don't like movies.
2. I don't like to go to the movie theater.
3. The blue one.
の can be used to make indefinite pronouns by nominalizes things. With things other than the non-past form a verb, the result of の-nominalization is an indefinite pronoun. An indefinite pronoun has the same properties as a noun. So, although we're using a particle to make it, other particles may follow including の. Now, the doubling of particles is usually unnatural. However, it is sometimes inevitable.
The one I bought
That over there is a green one.
Whose umbrella is this?
Which book is mine?
As for sashimi, fresh ones are delicious.
Grammar Note: If you were to have something nominalized with の and then made possessive, you get two の in a row.
They have two kinds of the whitish ones.
Could you tell me of ways to fix my feet from stinking?
There is no doubt that the one who died was an idiot.