"Vous comprenez quoi ?"

Translation: What do you understand?

[letsgocommies]

In the lesson page, it says "quoi" is used after a preposition, but there is none in this question. Is there something I am missing about the word "quoi"?

[Trofaste]

"que" changes to "quoi" after a preposition but also at the end of a sentence.

• Que comprenez-vous/comprends-tu ? - "que" is at the beginning, so it stays "que"
• Qu'est-ce que vous comprenez/tu comprends ? - "que" is in the middle, so it stays "que"
• Vous comprenez/tu comprends quoi ? - "que" is at the end, so it changes to "quoi"
• À quoi pensez-vous/penses tu ? - "que" is after a preposition, so it changes to "quoi""que" changes to "quoi" after a preposition but also at the end of a sentence.

[iazzzzzz]

You know what, Duo? Good question