Learn what "but i must" means, when people say it, and how to use it naturally in English.

It is a polite way to say you did not expect to see someone.
From Why I Did It, Episode 19
The speaker says they are surprised to see the other person there.
Use this as a neutral greeting when meeting someone unexpectedly. It can sound friendly or slightly stiff depending on tone.
Scenes unlock real expressions as you watch
Tap to translate or use dual subtitles
Practice immediately with AI Characters
Reinforce with quick quizzes and repetition
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