No you dont , only if it is a direct speach or quote do you need them.
Typically, if the words are your own you do not need to enclose them in quotation marks. However, if you specifically mean the words to be understood as dialogue, you should put quotation marks around them.
Yes. Anytime you are using someone else's words in your own writing, you must use quotation marks to indicate so.
I need to add quotation marks in that sentence
You would not need to use quotation marks or need to underline Petronella. It is her name.
No. Only titles of words will require quotations around it.
Quotation marks are used for direct quotes only. Indirect quotes are paraphrased and do not need quotation marks.
Well, it doesn't need quotation marks but it does have to be capitalized and it has to be in italics. If it's a name of the article in a magazine, then you have to underline it too. That's what I think.
Quotation marks should be used if the passage says "Bob thought" or something similar. In this case, the quotation marks are used in the same way they would be used if the passage said "Bob said"
no only quotes
Yes.
Yes, I believe so. If not, you only need to put it into italics.
No! It needs to be in italics. or yes if you are writing it by hand instead of typed.