<blockquote>
<p>这是我的马克笔。<strong>是</strong>我在一棵树下找到的。</p>
</blockquote>
<p>This is a compound sentence - <a href="https://baike.baidu.com/item/%E5%A4%8D%E5%90%88%E5%8F%A5" rel="nofollow noreferrer">复合句</a>.</p>
<p>In which, &quot;是&quot; is a relative pronoun - &quot;which&quot; or &quot;that&quot;, that connects a &quot;main clause&quot; and a &quot;relative clause&quot;. For example:</p>
<p>&quot;This is the table <strong>which</strong> I bought.&quot;</p>
<ul>
<li>This is the table =  the main clause.</li>
<li>I bought =  the relative clause.</li>
<li>which =  the relative pronoun joining the two clauses.</li>
</ul>
<p>For your example:</p>
<p>&quot;这是我的马克笔。<strong>是</strong>我在一棵树下找到的。&quot;</p>
<ul>
<li>This is my marker = the main clause.</li>
<li>I found under the tree =  the relative clause.</li>
<li>witch (是) = the relative pronoun joining the two clauses.</li>
</ul>
<p><strong>Comment on your rephrases:</strong></p>
<p>The first rephrase - &quot;我找到在一棵树下的&quot;, is completely ungrammatical.</p>
<p>The 2nd rephrase - &quot;我在一棵树(1)找到(2)&quot;</p>
<ul>
<li>
<ol>
<li>You can't find a pen in a tree, a specific location relative to the tree needs to be specified - either &quot;上&quot;, &quot;下&quot;, &quot;旁&quot; or &quot;附近&quot;.</li>
</ol>
</li>
<li>
<ol start="2">
<li>At the end of a declarative or assertive sentence, you shall add &quot;的&quot; to ascertain the action you have stated.</li>
</ol>
</li>
</ul>

CC BY-SA 4.0
2023-01-28T20:50:23.953Z
2023-01-28T20:50:23.953Z
r13
<blockquote>
<p>马克西：这是我的马克笔。是我在一棵树下找到的。</p>
</blockquote>
<p>是 doesn't start a sentence</p>
<p>是我在一棵树下找到的  is a dependent clause that adds information to the object &quot;marker pen&quot;</p>
<ul>
<li><p>The first thing about the marker is: &quot;it is mine&quot; (这是我的)</p>
</li>
<li><p>The second thing about the marker is: &quot;<strong>which</strong> I found under a tree&quot; (<strong>是</strong>我在一棵树下找到<strong>的</strong>)</p>
</li>
</ul>
<p>The correct sentence:</p>
<blockquote>
<p>马克西：这是我的马克笔，是我在一棵树下找到的。 It is my marker that I found under a tree.</p>
</blockquote>
<p>If you wrote &quot;这是我在一棵树下找到的马克笔&quot;  (This is a marker I found under a tree), it doesn't say the pen is now yours</p>

CC BY-SA 4.0
2023-01-28T15:38:51.203Z
So it needed to be in two different clauses to tell 1 the marker is mine and 2 where it was found? Would it be a run-on sentence if you tried to combine the two into one clause?
Elainor
CC BY-SA 4.0
2023-01-28T15:41:28.427Z
It would be a run-on sentence: 这是我在一棵树下找到的我的马克笔
Tang Ho
CC BY-SA 4.0
2023-01-28T11:08:02.587Z
2023-01-28T15:44:09.500Z
2023-01-28T15:44:09.500Z
Tang Ho
<p>In this sentence, the typical grammar structure for Subject + verb + place/object is not being used.</p>
<p>In the text, he says:</p>
<blockquote>
<p>马克西：这是我的马克笔。是我在一棵树下找到的。</p>
</blockquote>
<p>I am confused on the second sentence. I would write it as 我找到在一棵树下的 or 我在一棵树找到. (no 是 at the beginning).</p>
<p>What grammar structure does the native text use to say &quot;I found it under a tree,&quot; and why does it make sense? Additionally, can someone ascertain whether my grammar rephrase is correct or not, and why?</p>

<grammar>
Which version of this phrase is correct and why is there a 是 at the beginning?
# Which version of this phrase is correct and why is there a 是 at the beginning?

(Asked by: username_0 on 2023-01-28)

In this sentence, the typical grammar structure for Subject + verb + place/object is not being used.

In the text, he says:

> 马克西：这是我的马克笔。是我在一棵树下找到的。

I am confused on the second sentence. I would write it as 我找到在一棵树下的 or 我在一棵树找到. (no 是 at the beginning).

What grammar structure does the native text use to say "I found it under a tree," and why does it make sense? Additionally, can someone ascertain whether my grammar rephrase is correct or not, and why?

**Tags:** grammar


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## 2 answers

### Answer by username_1 on 2023-01-28. Score: 2

> 这是我的马克笔。**是**我在一棵树下找到的。

This is a compound sentence - [复合句](https://baike.baidu.com/item/%E5%A4%8D%E5%90%88%E5%8F%A5).

In which, "是" is a relative pronoun - "which" or "that", that connects a "main clause" and a "relative clause". For example:

"This is the table **which** I bought."

* This is the table = the main clause.
* I bought = the relative clause.
* which = the relative pronoun joining the two clauses.

For your example:

"这是我的马克笔。**是**我在一棵树下找到的。"

* This is my marker = the main clause.
* I found under the tree = the relative clause.
* witch (是) = the relative pronoun joining the two clauses.

**Comment on your rephrases:**

The first rephrase - "我找到在一棵树下的", is completely ungrammatical.

The 2nd rephrase - "我在一棵树(1)找到(2)"

* 1. You can't find a pen in a tree, a specific location relative to the tree needs to be specified - either "上", "下", "旁" or "附近".
* 2. At the end of a declarative or assertive sentence, you shall add "的" to ascertain the action you have stated.


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### Answer by username_2 on 2023-01-28. Score: 0

> 马克西：这是我的马克笔。是我在一棵树下找到的。

是 doesn't start a sentence

是我在一棵树下找到的 is a dependent clause that adds information to the object "marker pen"

* The first thing about the marker is: "it is mine" (这是我的)
* The second thing about the marker is: "**which** I found under a tree" (**是**我在一棵树下找到**的**)

The correct sentence:

> 马克西：这是我的马克笔，是我在一棵树下找到的。 It is my marker that I found under a tree.

If you wrote "这是我在一棵树下找到的马克笔" (This is a marker I found under a tree), it doesn't say the pen is now yours

> **Comments:**
> **username_0**: So it needed to be in two different clauses to tell 1 the marker is mine and 2 where it was found? Would it be a run-on sentence if you tried to combine the two into one clause?  
> **username_2**: It would be a run-on sentence: 这是我在一棵树下找到的我的马克笔  

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