# Certainty

## Certain: に違いない

に{違|ちが}いない means "I'm certain that".

> [!info] Example
> 私は{試験|しけん}を{合格|ごうかく}==に違いない==。
> I'm sure I'll pass the exam.

## Not always: とは限らない

<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 + だ</span></p>
	<p><span class="box">N + だ</span></p>
</div>
	<p class="right">+ とは限らない</p>
</div>

とは{限|かぎ}らない means "not always", "not necessarily".

> [!info] Example
> {大人|おとな}は{正|ただ}しい==とは限らない==。
> Adults are not always right.

## Impossible

### わけがない

<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>
</div>
	<p class="right">+ わけがない</p>
</div>

Means that there is no way, "impossible". 🛠 nuance?

> [!info] Example
> {全部|ぜんぶ}食べられる==わけがない==よ！
> It is impossible to eat it all!

### ようがない・ようもない

~{様|よう}がない means that there is no way, "impossible". 🛠 nuance?
Works by removing ~ます from a verb and adding ようがない・ようもない.
🛠 difference between ようがない and ようもない?

> [!info] Example
> もうこんな時間。帰り==ようがない==。
> It's already this late. I have no way to go back home.

### まさか

Usually at the start of a sentence, expresses surprise, about something that seemed impossible.

> [!info] Example
> ==まさか=={僕|ぼく}たちのチームが{負|ま}けた。
> I cannot believe our team lost.