# Reason

## ので

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + だ</span></p>
</div>
	<p class="right">+ ので</p>
</div>

Used after a reason, to explain the consequence. Means "because of", "since".
It is more objective than から: it expresses a situation that exists, and that is outside of one's control. For this reason, it can also be perceived as more polite.

> [!info] Example
> 雨な==ので==傘を持ってきてください。
> Since it is raining, please bring an umbrella.

## から

See [[🔰 Particles (2)#Because]].
It is more subjective than ので: it expresses more personal needs/actions/opinions.

## ことから

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + の</span></p>
</div>
	<p class="right">+ ことから</p>
</div>

Means "based on the fact that". Most formal than から, and puts an emphasis on it being true (objective information).

> [!info] Example
> {部屋|へや}から{音|おと}がある==ことから==、{誰|だれ}かいるはずです。
> From the fact that there is sound coming from the room, someone must be there.

## んです・のです

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + だ</span></p>
</div>
	<p class="right">+ んだ・んです・のだ・のです</p>
</div>

It is used to explain or put emphasis on something.
のだ・のです is a bit more formal than んだ・んです.
It is only used with nouns when asking questions.

> [!info] Example
> {良|よ}い{仕事|しごと}な==のです==か。
> Is it a good job?
> 
> もう言った==んだ==よ！
> I've already told you!

## のは・のが

Means "the reason for A is B", "doing A is B".
See [[Transformation#のは・のが sentence as noun]].

## なぜなら～から

<div class="usage">
<div class="">
	<p><span class="box">result</span></p>
</div>
	<p class="r"> + なぜなら + </p>
<div class="">
	<p><span class="box">reason</span></p>
</div>
	<p class="r">+ から</p>
</div>

Means "the reason is".
There are three variations:
* なぜなら(ば)
* なぜかというと
* どうしてかというと

> [!info] Example
> それを{言|い}えない！==どうしてかというと=={秘密|ひみつ}だ==から==。
> I cannot tell you that! Why, because it's a secret.

## そのために

<div class="usage">
<div class="">
	<p><span class="box">goal</span></p>
</div>
	<p class="r"> + そのため(に) + </p>
<div class="">
	<p><span class="box">action</span></p>
</div>
</div>

Means "for that reason", "because of".
See also [[Connectors - in order to#ために]].

> [!info] Example
> {丸|まる}い{日|にち}{働|はたら}いていた、==そのために=={今|いま}{寝|ね}に行きます。
> I worked the whole day. For that reason, I'm going to bed.
> 
> {日本|にほん}に行きたい。==そのために==、{日本語|にほんご}をちゃんと{勉強|べんきょう}しています。
> I want to go to Japan. In order to do so, I'm studying seriously.

## せいで

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + の</span></p>
</div>
	<p class="right">+ せいで</p>
</div>

Means "because of". Mostly used for negative contexts, to blame, etc.

> [!info] Example
> あなたの==せいで=={負|ま}けた。
> We lost because of you.

## おかげで

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + の</span></p>
</div>
	<p class="right">+ おかげで</p>
</div>

Means "because of". Used for positive contexts, like "thanks to".

> [!info] Example
> あなたの==おかげで=={勝|か}った。
> We lost because of you.

## というのは

<div class="usage">
<div class="">
	<p><span class="box">phrase</span></p>
</div>
	<p class="r"> + というのは + </p>
<div class="">
	<p><span class="box">definition</span></p>
</div>
</div>

Means "this means", "known as", "because".

> [!info] Example
> 「モバゲー」==というのは==モバイルゲームのことです。
> "Mobage" stands for mobile game.

## わけだ・わけではない

<div class="usage">
<div class="left">
	<p><span class="box">V</span></p>
	<p><span class="box">い-Adj</span></p>
	<p><span class="box">な-Adj + な</span></p>
	<p><span class="box">N + の</span></p>
</div>
	<p class="right">+ わけだ・わけではない</p>
</div>

わけだ・わけです means "for that reason", "as you'd expect".
わけではない・わけじゃない means "it doesn't mean that".

> [!info] Example
> {毎日|まいにち}{料理|りょうり}を{作|つく}るからうまくになった==わけだ==。
> I got good at cooking because I cook every day.

See also [[わけがない]] (🛠 to add later).