Yes. Example:
Regarding the previous test...
Regarding next week's party...
In the above sentence the word regarding is used correctly.
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Yes. 'Thus' is another word for 'therefore'. Thus the sentence you start of with 'thus' should be an explanatory sentence.
it is a sentence when you start a sentence with 3 words what end in ed
Yes, certainly you can. Then you can start writing.
Regarding your request for more information, I will provide you with an update by the end of the day.
In the above sentence the word regarding is used correctly.
My parents are very anxious regarding my study
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Yes, I can start a sentence with "Is."
Yes, you can start a sentence with a verb.
Yes, you can start a sentence with an acronym.
The correct grammar for the sentence is: "Please note that this letter is merely an inquiry regarding your interest and availability."
You can start a sentence with "Also"
You start a sentence with whatever word you need to start it with. A sentence can start with "A" if it needs to. A sentence just needs to make sense.
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Please find enclosed an image regarding our recent discussion. He spent entirely too long regarding his physique in the mirror.