Questions about example sentences with, and the definition and usage of "Voluntary"

that's because "involuntary" has two different meanings, in different contexts. In moral and legal situations, it means without having chosen, essentially being forced to. In the context of biology, it means without conscious thought, as in the involuntary nervous system or an involuntary spasm or bodily reaction. So it can mean without consent, or without conscious control.

Voluntary: “I choose to do this” Initiative: “I am determined to do this on my own” or “I will do what I have to in order to make this happen” Spontaneous: “The idea came to me out of nowhere” or “That was sudden” Hope these example sentences were helpful!

Regulations

: done or given because you  want to and not because  you are forced to  :done or given by choice : provided or supported by  people who do work without being paid : doing work without being  paid

voluntary = choosing to do something; not being forced to do something compliance = following the rules The US tax system assumes that all taxpayers will choose to follow the tax rules. The government does not send people a bill. Instead, people calculate how much tax they owe and send the government that much money. Because some people will make mistakes or cheat the system, every year the government picks some random people and looks at their taxes to check if the numbers make sense, a process called an "audit".

I am a man who started to study English at 25. I regret not studying it earlier, but I wonder why there was never a teacher who could teach me how fun it is to study English.

It is considered very polite and isn't used often. In america, we often speak to each other more casually. A butler, maid, or business individual would use it more often than the average citizen. It functions in a way that makes you sound more graceful or formal. It isn't gender specific but, it is associated more closely with women in america. Alternatives to "shall I" are... Do you want me to...(action)? [common] Would you like me to...(action)? [a little uncommon] Should I...(action)? [common] Note: since english is very flexible, there are several other ways to express the same concept. Hope this helps.

I get what you are trying to say but it wouldn't be said this way. I think you want your colleagues to "take the initiative" which means to do something on ones own without being told. Example "I wish my daughter would take the initiative and clean her room without me telling her" You could say "It's frustrating that my colleagues never take the initiative. I wish they could be more voluntary or helpful." The word spontaneous doesn't exactly fit here but I understand why you used it. Good attempt!

and assuring the quality of my results. or and ensuring the quality of titration in my results. or and ensuring titration quality for my results.

news accounts

I'm off to work at the moment. I'm on maternity leave. - I have the opportunity to travel, which is something I appreciate. I have good prospects in this job. - I'm only on a short-term contract, so I have no job security - I was made redundant. There were two many workers and the company was losing money. I've been out of work for three months now, but I hope to find a job soon. - I was sacked/fired from my last job. My boss didn't like the way I worked. - I've been doing some voluntary work at the local community centre. It's unpaid but at least I'm getting some more work experience.