You can quote as much or as little of what someone has said as long as you use the correct punctuation. If your sentence requires only a semi-quotation rather than a full one, use a semi-quotation, but punctuate it as if it were a full one.
You use quotations for short stories, poems, article, and songs I believe. Everything else is underlined.
You should not use quotations when you are paraphrasing information or providing your own analysis or commentary. Additionally, avoid using quotations for common knowledge or well-known facts that do not require attribution.
You don't, you italicize them.
questions and answers.
no
Use quotations in your draft because they lend validity and immediacy to the writing.
writing
Italics(:
Block quotations do not use quotation marks. The entire quote is a block of indented text.
Quotations for article titles. Italics and underlining are for full books - and the titles of journals.
for letter reference
Yes, if you use the name in a report or essay.