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+# Time - finally
+
+## やっと
+
+Means that something happened at last. More rarely means "barely".
+
+> [!info] Example
+> ==やっと=={論文|ろん|ぶん}を書き{終|お}わった。
+> I finally finished writing my thesis.
+
+## ついに
+
+Means "finally", "at last". Something happened after working to accomplish the goal.
+
+> [!info] Example
+> ==ついに== {新|あたら}しい{地下鉄|ちかてつ}が{出来上|で|き|あ}がった。
+> At last, the new subway was completed.
diff --git a/🔰 Grammar/Time - regularity.md b/🔰 Grammar/Time - regularity.md
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+# Time - Regularity
+
+## おきに
+
+Means "every other". This is used for repeated intervals, after a noun indicating something measurable.
+
+> [!info] Example
+> この電車は４分==おきに=={出発|しゅ|っぱつ}します。
+> This train leaves every four minutes.
+
+## ごとに
+
+<div class="usage">
+<div class="left">
+	<p><span class="box">V (dictionary)</span></p>
+	<p><span class="box">N</span></p>
+</div>
+	<p class="right">+ ごとに</p>
+</div>
+
+Means "each", "every". Used for intervals.
+
+> [!info] Example
+> {彼女|かのじょ}に{会|あ}う==ごとに==、{心|こころ}がドキドキする。
+> Every time I see her, my heart pounds.
+
+## おきに vs ごとに
+
+🛠🛠🛠🛠🛠
+These two notions can feel similar, but they are slightly different:
+
+https://japanese.stackexchange.com/questions/19619/why-in-this-example-sentence-theres-no-difference-between-%E3%81%94%E3%81%A8%E3%81%AB-and-%E3%81%8A%E3%81%8D%E3%81%AB
+https://japanese.stackexchange.com/questions/57870/whats-the-difference-between-%E3%81%9F%E3%81%B3%E3%81%AB-%E3%81%94%E3%81%A8%E3%81%AB-and-%E3%81%8A%E3%81%8D%E3%81%AB
+https://imabi.org/whenever-%e6%af%8e%ef%bd%9e-%ef%bd%9e%e6%af%8e%e3%81%ab-%ef%bd%9e%e3%81%8a%e3%81%8d%e3%81%ab/
+
+## たびに
+
+<div class="usage">
+<div class="left">
+	<p><span class="box">V (dictionary)</span></p>
+	<p><span class="box">N + の</span></p>
+</div>
+	<p class="right">+ たびに</p>
+</div>
+
+Means "whenever", "every time".
+
+> [!info] Example
+> {犬|いぬ}を{見|み}る==たびに=={幸|しあわ}せになる。
+> Whenever I see a dog, I feel happy.
diff --git a/🔰 Grammar/Time - surprise.md b/🔰 Grammar/Time - surprise.md
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+# Time - Surprise
+
+## 急に
+
+{急|きゅう}に means that something happened unexpectedly or quickly.
+
+> [!info] Example
+> ==急に==電車が{現|あらわ}れた。
+> A train suddenly appeared.
+
+## ふと
+
+This means "suddenly", "unexpectedly", "unintentionally". Emphasis is on the lack of intention.
+
+> [!info] Example
+> ==ふと=={通|とお}りに１０００円を{見|み}つけた。
+> I found 1000 yen on the street by chance.
+
+## たとたん
+
+Means "just as". Used for an action that happens just at the moment something else occurs. Can convey a nuance of something unexpected or surprising.
+Used with verbs in the past form (た).
+
+> [!info] Example
+> {部屋|へや}を{掃除|そうじ}し==たとたん==、うちの{猫|ねこ}が{吐|は}いてしまった。
+> As soon as I cleaned my room, my cat vomited.