Double/Single Quotation Marks
This issue is killing me. I know that when writing dialogue, double quotation marks are used, as in,
“The road is icy and wet,” he said.
However, when putting quotation marks around a single word or phrase intra-sentence, what is the correct procedure? Especially if the usage is referring to some sentiment of sarcasm or a sort of contempt. I know that if it is a direct quotation from a person or book, magazine, etc., double quotes are used.
Should it be:
For ‘security’ reasons I was not allowed to bring my cell phone into the concert hall.
I mean, I suppose this is a direct quotation of the person who said it was for security, but in that case, when are single quotation marks used?!