<p>In my experience(correct me if there's any exception), the structure '在...里'(as well as '在...前', '在...后', '在...上', '在...下' etc), when followed by '的' and then a noun, serving as an adj, is allowed to omit 在.</p>
<p>Examples: 房子里的人，公园里的树，信里的字.</p>
<p>And when it's after a verb as an adv, you can't omit 在.</p>
<p>Examples: 站在房子里，种在公园里，写在信里.</p>
<p>btw, I don't think the first sentence is correctly parsed:</p>
<blockquote>
<p>Two thirds of Californians live within 15 miles of the coast.</p>
<p>三分之二的加利福尼亚人居住在离海岸15英里以内的地区。</p>
</blockquote>
<p>15英里以内 -&gt; no more than 15 miles</p>
<p>离海岸15英里以内 -&gt; no more than 15 miles from the coast</p>
<p>离海岸15英里以内的地区 -&gt; areas that are no more than 15 miles from the coast</p>
<p>居住在离海岸15英里以内的地区 -&gt; live in areas that are no more than 15 miles from the coast</p>
<p>there's no '在...内' structure in this sentence at all.</p>

CC BY-SA 4.0
2018-11-30T05:35:47.443Z
The examples are provided by the dictionary. Sorry, I didn't pay enough attention (plus I'm still a beginner). Anyway, THANK YOU SO MUCHHHHHHH!!!!
Agnes
CC BY-SA 4.0
2018-11-30T04:02:52.297Z
2018-11-30T04:02:52.297Z
2020-06-17T09:50:11.587Z
Jason Swift
<p>I feel that your question is hard to answer. The element of Chinese is the character, that's to say, 内 has its intrinsic meaning of in, inside, let in, within, etc, and can be used with other characters. So the examples you list are basically different cases. Example 1 is about 以内; 2 is about 内部; 3 is about 国内; 4 is 在……内, indeed; 5 is 之内. They are not simply 在……内 with 在 omitted. Maybe your translations into English share the word within, but they are phrased differently in the original texts.</p>

<p>If, we want 在……内 to be the equivalence of with in every example you gave, they will be（though may not be natural）:</p>

<p>三分之二的 加利福尼亚人 居住在 离海岸线十五英里范围 内。</p>

<p>1992年，在 欧盟 内的边境通行管制取消了。</p>

<p>在 英国 内的订货，请附上2.5英镑的邮资及包装费用。</p>

<p>在 悲剧发生后几小时 内，就集结起来一支紧急救援队伍。</p>

<p>See?在……内works for every case.</p>

CC BY-SA 4.0
2018-11-30T04:31:16.177Z
Sorry but the example sentences are provided by the dictionary, not me  thank you for helping me clear up my confusion!
Agnes
CC BY-SA 4.0
2018-11-30T04:21:45.440Z
2018-11-30T04:21:45.440Z
Toosky Hierot
<p>Based on an online dictionary :</p>

<blockquote>
  <p>在…里，在…内 :</p>
  
  <p>Inside or not further than an area or period of time</p>
</blockquote>

<p>And here are some examples (provided by the dictionary) of how 在…里 or 在…内 is used :</p>

<blockquote>
  <p>Two thirds of Californians live within 15 miles of the coast.</p>
  
  <p>三分之二的加利福尼亚人居住在离海岸15英里以内的地区。</p>
  
  <p>In 1992 cross-border controls within the EU were dismantled.</p>
  
  <p>1992年，欧盟内部取消了边境通行管制。</p>
  
  <p>For orders within the UK, please enclose £2.50 for post and packing.</p>
  
  <p>英国国内的订货，请附上2.5英镑的邮资及包装费用。</p>
  
  <p>We recommend that this wine should be consumed within six months.</p>
  
  <p>我们建议该酒在6个月内饮用完毕。</p>
  
  <p>Within hours of the tragedy happening, an emergency rescue team had been assembled.</p>
  
  <p>悲剧发生后几小时之内，就集结起来一支紧急救援队伍。</p>
</blockquote>

<p>From those examples, we can see that "在" is being omitted in some sentences. Now, what I want to ask is :</p>

<p>Are we allowed to omit 在 anytime we want to or is there any specific rules/conditions of when we are allowed to omit 在?</p>

<word><sentence-structure>
Are we allowed to omit 在 in 在…里，在…内 structure?
# Are we allowed to omit 在 in 在…里，在…内 structure?

(Asked by: username_0 on 2018-11-29)

Based on an online dictionary :

> 在…里，在…内 :
>
> Inside or not further than an area or period of time

And here are some examples (provided by the dictionary) of how 在…里 or 在…内 is used :

> Two thirds of Californians live within 15 miles of the coast.
>
> 三分之二的加利福尼亚人居住在离海岸15英里以内的地区。
>
> In 1992 cross-border controls within the EU were dismantled.
>
> 1992年，欧盟内部取消了边境通行管制。
>
> For orders within the UK, please enclose £2.50 for post and packing.
>
> 英国国内的订货，请附上2.5英镑的邮资及包装费用。
>
> We recommend that this wine should be consumed within six months.
>
> 我们建议该酒在6个月内饮用完毕。
>
> Within hours of the tragedy happening, an emergency rescue team had been assembled.
>
> 悲剧发生后几小时之内，就集结起来一支紧急救援队伍。

From those examples, we can see that "在" is being omitted in some sentences. Now, what I want to ask is :

Are we allowed to omit 在 anytime we want to or is there any specific rules/conditions of when we are allowed to omit 在?

**Tags:** word, sentence-structure

---

## 2 answers

### Answer by username_1 on 2018-11-30. Score: 2 | Accepted answer

In my experience(correct me if there's any exception), the structure '在...里'(as well as '在...前', '在...后', '在...上', '在...下' etc), when followed by '的' and then a noun, serving as an adj, is allowed to omit 在.

Examples: 房子里的人，公园里的树，信里的字.

And when it's after a verb as an adv, you can't omit 在.

Examples: 站在房子里，种在公园里，写在信里.

btw, I don't think the first sentence is correctly parsed:

> Two thirds of Californians live within 15 miles of the coast.
>
> 三分之二的加利福尼亚人居住在离海岸15英里以内的地区。

15英里以内 -> no more than 15 miles

离海岸15英里以内 -> no more than 15 miles from the coast

离海岸15英里以内的地区 -> areas that are no more than 15 miles from the coast

居住在离海岸15英里以内的地区 -> live in areas that are no more than 15 miles from the coast

there's no '在...内' structure in this sentence at all.

> **Comments:**
> **username_0**: The examples are provided by the dictionary. Sorry, I didn't pay enough attention (plus I'm still a beginner). Anyway, THANK YOU SO MUCHHHHHHH!!!!  

---

### Answer by username_2 on 2018-11-30. Score: 1

I feel that your question is hard to answer. The element of Chinese is the character, that's to say, 内 has its intrinsic meaning of in, inside, let in, within, etc, and can be used with other characters. So the examples you list are basically different cases. Example 1 is about 以内; 2 is about 内部; 3 is about 国内; 4 is 在……内, indeed; 5 is 之内. They are not simply 在……内 with 在 omitted. Maybe your translations into English share the word within, but they are phrased differently in the original texts.

If, we want 在……内 to be the equivalence of with in every example you gave, they will be（though may not be natural）:

三分之二的 加利福尼亚人 居住在 离海岸线十五英里范围 内。

1992年，在 欧盟 内的边境通行管制取消了。

在 英国 内的订货，请附上2.5英镑的邮资及包装费用。

在 悲剧发生后几小时 内，就集结起来一支紧急救援队伍。

See?在……内works for every case.

> **Comments:**
> **username_0**: Sorry but the example sentences are provided by the dictionary, not me  thank you for helping me clear up my confusion!  

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