Question

Can/could you hear me at the back? как правильно???

Answer 1

Can you hear me at the back?

Answer 2

Can you hear me at the back? - Настоящее время.

Could you hear me at the back? - Прошедшее время или вежливая форма или условное наклонение.

Answer 3

Both "Can you hear me at the back?" and "Could you hear me at the back?" are grammatically correct and commonly used phrases.

"Can you hear me at the back?" is asking if the person at the back of the room or a distance away can hear the speaker at that moment.

"Could you hear me at the back?" is asking if the person at the back of the room or a distance away was able to hear the speaker at a specific time in the past.

Both phrases are used to ensure that the speaker's voice reaches all members of the audience or listeners, especially those who might be farther away.