後の方にいる方、私の声が聞こえますか？って英語でなんて言うの？

"People at the back, Can you hear me?" This indicates you are asking the people at the back if they can hear you. "Can everyone hear me?" This asks all of the people if they can hear you. "Can you hear me at the back?" This is another way of asking the people at the back if they can hear you.

There are different scenarios where these situations can occur. My answer is based on a possible casual setting with a group of people seated in different areas having a conversation and speaker asking if he or she can be heard from the back. The other would be a seminar type of setting where the speaker is speaking to a crowd of people and wants to make sure he or she can be heard in the back so he asks for feedback from the crowd.

If you are addressing a large group and want to know if the people at the rear are receiving you, then the first example sentence asks the question. The second sentence is a joke, of course.

When calling for "people at the back" you are targeting this specific group to make sure that they can hear you and would not include the people that are in close vicinity to you. When you said "Can you all hear me loud and clear?", you are asking everyone if your voice can be heard. "Is my voice reaching you?" is another way to ask if they can hear you. Loud and clear: are adjectives to be used in this situation to affirm that your voice is strong and can be heard. Hope this helps!

"How about in the back, Can you hear me?" "Can the people in the back hear me?" Both of these expressions can be used to ask this question. The first one is used when you are conducting a sound check or making sure you can be heard, you ask in the front and then the back. The other expression is more precise since you are concerned that only the people in the back can't hear you.