ano onna no hito ha eki de tomodati wo matte imasu.

女の人 is a more neutral, natural way to say woman in Japanese.

• 女 by itself literally means woman/female, but in many contexts it can sound blunt, rough, or even rude.
• 女の人 is softer and more polite, closer to that woman / that lady.

So in normal conversation, あの女の人 is usually much more natural than just あの女.

Here, の links two nouns together.

• 女 = woman/female
• 人 = person
• 女の人 = female person → woman

This is a very common pattern in Japanese.
You can think of A の B as something like:

• B of A
• A-type B
• B related to A

So 女の人 is literally person of the female kind, which becomes woman in natural English.

It is read おんなのひと.

Full sentence reading:

あの おんなのひと は えき で ともだち を まって います。

Word readings:

• 女の人 = おんなのひと
• 駅 = えき
• 友達 = ともだち
• 待っています = まっています

は marks the topic of the sentence.

So:

• あの女の人は = As for that woman, ...

The sentence is talking about what that woman is doing.

A rough structure is:

• [Topic] は [information about the topic]

So here:

• あの女の人は = as for that woman
• 駅で友達を待っています = she is waiting for a friend at the station

Because で marks the place where an action happens.

• 駅で待っています = is waiting at the station
• The action of waiting happens there.

By contrast, に often marks:

• a destination: 駅に行く = go to the station
• a specific point in time
• the target of existence with いる / ある

Since 待つ is an action taking place somewhere, で is the natural particle here.

Because 友達 is the direct object of 待つ.

• 友達を待つ = to wait for a friend

In English, we say wait for a friend, using for.
In Japanese, 待つ directly takes an object with を.

So even though English uses for, Japanese uses the normal object marker:

• 友達を待っています = is waiting for a friend

待っています shows an ongoing action: is waiting.

• 待ちます = wait / will wait
• 待っています = is waiting

So this sentence describes what the woman is doing right now.

Also:

• 待っている is the plain form
• 待っています is the polite form

So this sentence is in polite style.

It is built from the verb 待つ.

Steps:

1. Dictionary form: 待つ = to wait
2. Te-form: 待って
3. Add います → 待っています

This 〜ている / 〜ています form is often used for:

• ongoing actions
• states resulting from actions

Here it means an ongoing action: is waiting.

Because Japanese normally uses subject/topic-object-verb order, and the verb usually comes at the end.

This sentence is organized like:

• あの女の人は = topic
• 駅で = at the station
• 友達を = friend (object)
• 待っています = is waiting

So the basic feeling is:

That woman, at the station, a friend, is waiting for.

That sounds strange in English, but it is normal in Japanese.

Yes. あの is the modifier form of that over there.

Japanese has a three-way distinction:

• この = this ... near me
• その = that ... near you / already mentioned
• あの = that ... over there, away from both of us

So あの女の人 means that woman over there.

It is grammatically ambiguous. 友達 can mean:

• a friend
• friends

In this sentence, English will often translate it as a friend, but Japanese itself does not force singular or plural here.

If the context makes it clear, either reading is possible.

No. Normal Japanese writing usually does not put spaces between words.

So this sentence would normally be written as:

あの女の人は駅で友達を待っています。

The spaces are often added in beginner materials to make the sentence easier to read and analyze.

Yes, but it would change the nuance.

• あの女の人は駅で友達を待っています。
  = As for that woman, she is waiting for a friend at the station.

• あの女の人が駅で友達を待っています。
  = That woman is the one waiting for a friend at the station.

So:

• は presents the topic
• が tends to identify or emphasize the subject

In many situations, は sounds more natural if you are simply describing what that woman is doing.