登壇

1. Origins, structure, and basic meaning

• Structure: 登壇 is a noun and irregular intransitive verb read とうだん, meaning for a lecturer or presenter to take the stage or podium in an official speaking role.
• Basic usage: The presenter is the subject in a pattern such as 講師が登壇する; the word focuses on taking the stage rather than on the presentation content itself.
  • 司会に名前を呼ばれ、講師が登壇した。 describes the lecturer taking the podium after the moderator called the lecturer's name; 発表者は緊張しながら登壇し、資料を映した。 describes the presenter taking the stage nervously and displaying the materials.

2. Common pitfalls and similar expressions

• 名前を呼ばれ、登壇する
  • The passive 呼ばれ presents the moderator's call from the presenter's perspective, and the sequence continues with taking the stage.
• 緊張しながら登壇する
  • ながら shows that the state of nervousness accompanies the act of taking the stage.
• 登壇 and 発表
  • 登壇 is the act of taking the stage or podium, while 発表 is the act of presenting information or results there.