There is no certain age when it ends. But puberty usually stops in your early 20's so it can end anywhere from 13-22
Changing "we had done it" from active to passive voice would make look like "it had been done by us".
This is a sign that you are done with puberty.
I am not sure what you are asking here, are you wondering how you can tell if a voice (for example, over the phone) is a boy's voice or a girl's voice or are you enquiring about a boy's voice changing in pitch (breaking) during puberty?
In puberty the voice changing is both growth and development. It development in that it is the voice already existed and is changing. But it is growth in that the reason for the voice changing is that the larynx is lengthening and the vocal cords are lengthening too.
Yes, changing 'how' to 'why' can change the meaning of a question. 'How' typically requests a method or process, while 'why' asks for the reason or motive behind something. The shift can alter the focus of the inquiry.
There are apps that you can get for changing your voice and that's how he does Fred.
The passive voice of ''what do you do'' is "what is done by you?"
No, they're just very good at changing their voices accordingly.
it mean you a man
Don't worry about your voice it will eventually change so using any energy worrying about it really does not make sense. I never noticed my voice changing but from listening to tapes of myself from when I was 10 years old my 20 something voice is obviously different. Don't worry about your voice changing because it will happen. You should also know that you def have a Adams apple but not all men have one that shows distinctly. Puberty lasts until you are around 18-20 so you have plenty of time.
There are certain voice changing software through which your voice tone will be changed accordingly. One of them would be Voice Changer 6.0 Diamond.
by changing the inflection of the voice