Can anyone tell me why students often use an introductory phrase to introduce a quotation and then repeat the author's name in parentheses at the end? This doesn't make sense to me (and it's not MLA format), so I'm having trouble understanding why I see this in almost all papers. Do high school teachers ask for this? Are students afraid of being accused of plagiarism if you don't put the name at the end of the quotation? Unnecessary repetition is (in some ways) insulting to the reader (and distracting) and it causes teacher to have to make comments about format rather than content.
This is to prevent plagiarism.
If students simply write a quotation, readers (or teachers) cannot understand the context. Why was the quotation put?
An introductory phrase indicates why the quote was chosen OR who said the quote. For example, if you are writing an essay about Edgar Allan Poe's gothic poem, you might write: The literary critic noted, "Poe's eerie ...
The reasoning behind the introductory phrase to introduce a quotation is explained.