🔰 Grammar/Opposition.md

@@ -16,8 +16,6 @@ This is the basic way to say "but".
 > コンビニに行きました。==でも==、何も買わなかった。
 > I went to the convenience store. But I didn't buy anything.
 
-⚠ Do not confuse with [[TeF (4) - even if#Even if ても・でも]].
-
 ## しかし
 
 This is similar to でも, meaning "however", but usually more formal and most commonly found in written form.

🔰 Grammar/Possibility - Obligation.md

@@ -0,0 +1,30 @@
+# Possibility - obligation
+
+## 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.
+
+## 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.