～たとたんに (vs たばかり・たところ): “As soon as”

Introduction

Just when I was about to start writing this lesson, I got a message from a user that said that they were just about to finally master Japanese grammar when they got distracted by a steaming hot bowl of katsudon...

And and and, the steaming hot bowl of katsudon had just-

～とたん: Just when I was about to tan...

構成こうせい

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  Past casual verb途端とたん(に)
  Example:
  → 箸はしを持もった途端とたんに、電話でんわがなった。
  "The phone rang just as I picked up my chopsticks.”

Today's grammar is all about actions that happen right when another action begins. Like when your pizza pocket explodes the moment you sit down. (It's no laughing matter.)