Please stop shouting, Amy. If you really want to show annoyance with Amy, you
could write Please stop shouting, Amy!
The sentence "Please stop shouting, Amy" should use a comma before the name "Amy" to indicate a pause and separate the direct address from the rest of the sentence.
Could you please clarify which punctuation mark you are referring to?
The different punctuation at the end of a sentence are mostly period ("."), Question mark ("?"), Exclamation mark ("!").
Punctuation at the end of a sentence indicates a complete thought.
An interrogative sentence ends with a question mark (?). This punctuation is used to indicate that a question is being asked.
A dash or a semicolon can indicate a more definite break in the flow of a sentence. These punctuation marks can be used to separate independent clauses or to emphasize a pause between ideas.
A question mark is a punctuation mark used to end an interrogatory sentence.
declarative
!
An interrogative sentence ends with a question mark.
At the end of a sentence.
A period is used in the sentence "the sun is" to indicate the end of a statement.
A question mark.