0 Hello, 02br 02br 00I need help on how to put nouns in plural in genitive cases. 02br 02br 00In my sentence "01b00Are you talking about hypnotizers’voice02b00", I’m talking about the voices of the hypnotizers. There are many hypnotizers, but each of them has only one voice. Should I write my sentence this way "01b00Are you talking about hypnotizers’ voiceS02b00?" "Voice" is a countable noun. Therefore, it is "voices" in plural. But a hypnotizer has only one voice. 02br 02br 00Should I say "01b00the hypnotizers’voice is too low02b00" or "01b00the hypnotizers’voices are too low02b00?" 02br 02br 00In "01b00Ann and Don’s microphone volume is too low for me02b00", I’m talking about 2 volumes. 02br 00"Volume" is an uncountable noun. But we have the volume of two people. Should I write my sentence as following "01b00Ann and Don’s microphone volumes are too low for me02b00?" 02br 02br 00Thank you very much 0-
0And if there are two microphones-- one for each of Ann and Don-- then it is: 02br 02br 00'01b00Ann's and Don's02b00 microphone 01b00volumes are02b00 too low.' 02br 02br 00'Volume', like many nouns, can be either countable or uncountable in different circumstances, and here is it definitely countable, since the