Qual é a diferença entre "The video would not play this morning" e "The video did not play this morning" ?Você pode indicar exemplo de resposta.

They're quite similar. "The video would not play this morning" implies that you tried to play the video but failed for some reason. For example, there might have been a bad internet connection, etc. "The video did not play this morning" could (and usually does) mean the same thing. But it doesn't necessarily imply failure. For example, a school could play the same video every day. If they decide now to show it, a student could say "The video did not play this morning" to mean that the school didn't play it. You couldn't say "The video would not play this morning" to express the same thoughts.

That's not a very good example, but I hope you understand the main point.