at the end of a sentence
Yes, in American English, periods are placed inside quotation marks.
In direct speech, you should use quotation marks to indicate the spoken words. Additionally, you should use commas, periods, question marks, or exclamation points within the quotation marks as appropriate to punctuate the dialogue.
If a word is in quotation marks, and you're quoting it, use single quotation marks to indicate an embedded quotation.
In APA style, use double quotation marks to enclose direct quotes from sources. Place the punctuation inside the quotation marks. Use single quotation marks for quotes within quotes.
Never. You should always have quotation marks sorrounding a quote.
In dialogue, periods, commas, question marks, and exclamation points go inside quotation marks. (A semicolon goes outside quotation marks but isn't used much in dialogue, so you don't need to worry about it.)
traditional puncutation is stuff like periods [.] commas [,] question marks [?] and quotation marks ["]
In American English, periods typically come before closing quotation marks, regardless of whether it is part of the quoted text. For example: She said, "Hello." In British English, periods are placed outside closing quotation marks unless they are part of the actual quote.
Punctuation marks such as periods and commas should be placed outside the set of quotation marks. Question marks and exclamation points should be placed inside if they are part of the quoted material, and outside if they are not.
I use quotation marks. It's not a hard and fast rule.
Yes, quotation marks can be used to indicate sarcasm in writing.
If a proper name or nickname is part of a quote and requires quotation marks, use double quotation marks for the overall quote and single quotation marks within the quote for the proper name or nickname.