[English Grammar] Yes-No Questions

[@Naoual789]

First thank you for this video. My question is: how can we argue for this movement and present evidence for that? And can we talk here about trace?

[@Trevtutor]

[Syntax] Subject Auxiliary Inversion and Movement
ua-cam.com/video/IKwsgqT9cdg/v-deo.html
This would be a better video for discussion about movement and traces.