<p>Here’s my take (I got a 790 verbal, and I used to tutor the SAT, which is similar). I think part of the GRE is memorizing the vocabulary words and beyond that point, the strategies are what gets you there. If you have a 320, IMO you are probably missing both parts. Yes, there are strategies - any $30 strategy guide will tell you that (e.g. fill in the blanks in your head before looking at the answer choices for sentence completions; read the questions first for reading comprehension; make a sentence for the antonyms and analogies). BUT the strategies will not get you very far on their own; you have to know the vocabulary otherwise you will have a really hard time eliminating answer choices or filling in those blanks.</p>
<p>Personal opinion: I don’t like Kaplan’s flash cards. The words are far too elementary for the GRE. I prefer Barron’s 3500 word list. You don’t need to memorize all of them; of course, the more you know the better, but if you only have time to memorize some that’s better than none.</p>