<p>In your examples
The first sentence "这扇门开打了", in English means "The window is opened."
The second sentence "这个书店开门了", in English means "The bookstore is on bussiness."
And, in the first sentence 开打 means open; in the second sentence 开门 means be bussiness.
The 了 is necessary for a normal Chinese sentence.</p>

CC BY-SA 3.0
2014-09-11T03:39:39.590Z
2014-09-11T03:39:39.590Z
user6374
<p>打開 (verb-complement) is to open. You can open a door, a window, a book, etc. A common usage is 把 something 打開. 
開門 (verb-object) is to open a door.</p>

CC BY-SA 3.0
2014-09-11T09:52:20.853Z
Thanks. But why is your Chinese different from mine and others? Does it have the same meaning?
Blaszard
CC BY-SA 3.0
2014-09-11T10:26:06.117Z
He used traditional characters
rhughes
CC BY-SA 3.0
2014-09-11T10:59:12.590Z
Ah, thanks. I just started to learn simplified mandarin Chinese a few weeks ago and didn't know anything about the traditional characters.
Blaszard
CC BY-SA 3.0
2014-09-11T15:40:50.873Z
I am a "she" :)
monalisa
CC BY-SA 3.0
2014-09-10T23:44:21.670Z
2014-09-10T23:44:21.670Z
monalisa
<p>开门 is short for 打开门。打开 means open。</p>

CC BY-SA 3.0
2014-09-11T05:11:25.503Z
2014-09-11T05:11:25.503Z
Joseph
<p>打开， 把器皿或盒子的盖子掀开。它的反义词是“关闭”。</p>

<p>To move a cover from closed position. E.g. open a bottle of scotch, open a door.</p>

<p>source: <a href="http://baike.baidu.com/view/72184.htm?fr=aladdin" rel="nofollow">http://baike.baidu.com/view/72184.htm?fr=aladdin</a></p>

<hr>

<p>开门, 打开房门。也指敞开门户。表示欢迎。</p>

<p>Literary translated as "open the door." Often used as a welcoming gesture. In the case of meaning "business is open," the door does not have to be literally open.</p>

<p>source: <a href="http://baike.baidu.com/subview/254067/12526864.htm?fr=aladdin" rel="nofollow">http://baike.baidu.com/subview/254067/12526864.htm?fr=aladdin</a></p>

<hr>

<p>了 [1]放在动词或形容词后，表示动作或变化已经完成：写完了；哭了。 </p>

<p>It is necessary here to indicate the action is complete.</p>

<p>Source: <a href="http://baike.baidu.com/view/17367.htm" rel="nofollow">http://baike.baidu.com/view/17367.htm</a></p>

CC BY-SA 3.0
2014-09-11T00:19:16.453Z
2014-09-11T00:26:43.093Z
2014-09-11T00:26:43.093Z
George Chen
<p>I think the difference is 1 is physical status of the shop and 2 is functional status of the shop.</p>

CC BY-SA 3.0
2014-09-11T10:56:05.930Z
2014-09-11T10:56:05.930Z
Shiva Kishore Tekale
<p>In the context of the example you posted, 开门 is describing the status of the shop. Like the meaning of 'open' and 'closed' signs you could find in most of stores. </p>

<p>打开 in the context of the example you gave is describing the status of the door or anything could be turned on like window, valve or switch. This sentence should be translated to 'This door is open'.</p>

<p>Because in Chinese a word's meaning may varies according to the context and situation of the sentence. You should remember some combination of noun-adjective or verb-adverb but not just remember the meaning of a single word.</p>

CC BY-SA 3.0
2014-09-11T00:20:55.247Z
2014-09-11T00:20:55.247Z
Tony Sui
<p>How can I tell when to use <code>打开</code> and when to use <code>开门</code> in Chinese? For example, in the following sentences:</p>

<ul>
<li>这扇门打开了</li>
<li>这个书店开门了</li>
</ul>

<p>Why does the first sentence use <code>打开</code> and the latter use <code>开门</code>?</p>

<p>Also, is it necessary to use <code>了</code> in this sentence?</p>

CC BY-SA 3.0
2014-09-11T09:47:10.057Z
Oops. That was a typo. Fixed.
Blaszard
CC BY-SA 3.0
2014-09-11T10:27:00.007Z
To summarize the below answers: 打开 = (roughly) to open, 开门 = (roughly) open the door/shop
rhughes
<grammar>
What's the difference between 打开 and 开门?
# What's the difference between 打开 and 开门?

(Asked by: username_0 on 2014-09-10)

How can I tell when to use `打开` and when to use `开门` in Chinese? For example, in the following sentences:

* 这扇门打开了
* 这个书店开门了

Why does the first sentence use `打开` and the latter use `开门`?

Also, is it necessary to use `了` in this sentence?

**Tags:** grammar

> **Comments:**
> **username_0**: Oops. That was a typo. Fixed.  
> **username_1**: To summarize the below answers: 打开 = (roughly) to open, 开门 = (roughly) open the door/shop  

---

## 6 answers

### Answer by username_7 on 2014-09-11. Score: 5 | Accepted answer

In the context of the example you posted, 开门 is describing the status of the shop. Like the meaning of 'open' and 'closed' signs you could find in most of stores.

打开 in the context of the example you gave is describing the status of the door or anything could be turned on like window, valve or switch. This sentence should be translated to 'This door is open'.

Because in Chinese a word's meaning may varies according to the context and situation of the sentence. You should remember some combination of noun-adjective or verb-adverb but not just remember the meaning of a single word.


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### Answer by username_2 on 2014-09-11. Score: 4

In your examples
The first sentence "这扇门开打了", in English means "The window is opened."
The second sentence "这个书店开门了", in English means "The bookstore is on bussiness."
And, in the first sentence 开打 means open; in the second sentence 开门 means be bussiness.
The 了 is necessary for a normal Chinese sentence.


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### Answer by username_3 on 2014-09-10. Score: 1

打開 (verb-complement) is to open. You can open a door, a window, a book, etc. A common usage is 把 something 打開.
開門 (verb-object) is to open a door.

> **Comments:**
> **username_0**: Thanks. But why is your Chinese different from mine and others? Does it have the same meaning?  
> **username_1**: He used traditional characters  
> **username_0**: Ah, thanks. I just started to learn simplified mandarin Chinese a few weeks ago and didn't know anything about the traditional characters.  
> **username_3**: I am a "she" :)  

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### Answer by username_4 on 2014-09-11. Score: 0

开门 is short for 打开门。打开 means open。


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### Answer by username_5 on 2014-09-11. Score: 0

打开， 把器皿或盒子的盖子掀开。它的反义词是“关闭”。

To move a cover from closed position. E.g. open a bottle of scotch, open a door.

source: <http://baike.baidu.com/view/72184.htm?fr=aladdin>

---

开门, 打开房门。也指敞开门户。表示欢迎。

Literary translated as "open the door." Often used as a welcoming gesture. In the case of meaning "business is open," the door does not have to be literally open.

source: <http://baike.baidu.com/subview/254067/12526864.htm?fr=aladdin>

---

了 [1]放在动词或形容词后，表示动作或变化已经完成：写完了；哭了。

It is necessary here to indicate the action is complete.

Source: <http://baike.baidu.com/view/17367.htm>


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### Answer by username_6 on 2014-09-11. Score: -1

I think the difference is 1 is physical status of the shop and 2 is functional status of the shop.


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