Preguntas sobre ejemplos de oraciones con, y la definición y uso de "Concerning"

A: I have sent you a letter concerning the issue we discussed earlier.

That student's grades are very concerning.

Its concerning to hear that he has started gambling again.

Concerning your sentences, I hope my example sentences help!!😊

A: You can really use either in a business email. I see them used interchangeably. "Regarding" might be a little more detached (to regard is to stand back and observe), and "concerning" might be a little more personal (since you might be concerned perhaps). However, I almost never see anyone use those connotations with them and you might see one just as much as the other.

- Regarding the sale of 500 appliances to the customer, the confirmation of sale should be available in the next week.

- Concerning the high priority complaint from the customer, the techs should respond by end of business today.

A: concerning and regarding are formal words used in Business English, preferably in written Speech. About is more flexible and can be used for both oral and written Speech as well as formal and informal settings. For example:
To your boss "Sir, I would like to discuss with you the matter regarding my request for vacation in September"
To your colleague, "Mr. Smith, when is it a good time to talk about the vacation schedule?"
To your supervisor, "Miss Williams, could I talk with you for a moment? It concerns my presentation in our joint meeting and I have a few things to go over with you before the meeting starts"

A: If it's a response to a formal question then yes it's natural.