The Navy has developed a whole language of its own over the centuries. Typically someone that has been given an order will respond with Aye, Sir! or Aye Aye, Sir! The single Aye is normally used with a repeated order, such as "Aye, Sir! Coming to heading 240, Sir!" where is Aye aye is used independent of anything else. A commanding officer, and only the commanding officer, can reply, Wilco! Which is short for "Will Comply."
Mr. President is the normal title used. Sir is appropriate, as in Yes, Sir and No, Sir.
"Yes, Sir!" is an exclamation. It is used to show deference to elders.It is also a required reply in the US Military.
It is capitalized when it is a title, meaning it comes before a name, but not as a pronoun, where it takes the place of a name. For example in Sir Elton John the Sir is capitalized, but in the sentence, "Hello sir," the sir would not be capitalized.
Yes. It is a prepositional phrase, used as an adverb.
YES!
Yes
Yes, "Sir" should have a capital letter in a sentence when it is used as a title or form of address, such as "Can you help me, Sir?"
Yes, although a more common phrase used is "normally abnormal" - in absolute terms the lesion described is abnormal but is it a commonly seen lesion that does not clarify or impact the diagnosis.
Yes. The prepositional phrase can be an adverbial phrase. Example: We do not play in the office.
Yes, "can be used" is a grammatically correct phrase that is commonly used to indicate something that is acceptable or able to be utilized for a particular purpose.
Yes, "clean out" does not have a hyphen when used as a verb phrase. However, it can have a hyphen when used as an adjective phrase, as in "clean-out sale."