# Possibility and obligation

## でも

Used to list one or more possible options.

> [!info] Example
> ジュース==でも==お茶==でも==飲もうか。
> Shall we drink something like a juice or tea?

## かもしれない

Express a possibility, like "perhaps".
By order of politeness: かもしれません > かもしれない > かも.

> [!info] Example
> 今日も来る==かもしれない==。
> He might come today too.

## かどうか

Means "whether or not". 

> [!info] Example
> 行きたい==かどうか=={分|わ}からない。
> I'm not sure if I want to go or not.

## はずだ・はずがない

<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>
	<p><span class="box">N + の</span></p>
</div>
	<p class="right">+ はずだ ・ はずがない</p>
</div>

はずだ means "it must/should be", while はずがない means "it cannot be".

> [!info] Examples
> {彼|かれ}は今日来る==はずだ==。
> He should be coming today.
> 
> そんあ==はずがありません==。
> This cannot be true.

## ぜひ

Means certainly, definitely. Expresses a wish.

> [!info] Example
> この{映画|えい|が}==ぜひ==見ます。
> I'll watch this movie for sure.

## きっと

Means surely, almost certainly. Express an expectation.

> [!info] Example
> ==きっと==雨でしょう。
> It will surely rain.

## 必ず

{必|かなら}ず means certainly, definitely. Expresses an obligation.

> [!info] Example
> 明日の{授業|じゅ|ぎょう}==必ず==来てください。
> Please be sure to attend tomorrow's class.

## ことができる

Means "can", "able to".
It has the same meaning as the potential form (see Conjugation [[Basics]]).
食べる => 食べられる = 食べることができる.

> [!info] Example
> {英語|えいご}を{話|はな}す==ことが出来ない==。
> I cannot speak English.