Dear Govind,
I'm happy to respond.
First and foremost, I would say: to improve your verbal, you need to
READ. You need to read widely, well beyond anything related to the GMAT. You need to read hard challenging material in multiple topics. You need to read for an hour a day every day --- that's an hour over and above any GMAT-specific preparations. Since you want an MBA, you should already be getting yourself as informed as possible about the modern business world, so I would recommend reading the
Wall Street Journal every; I would recommend looking at
Bloomberg Businessweek regularly; and especially the
Economist magazine --- read that from cover to cover each week. For more suggestions on what to read, see:
https://magoosh.com/gmat/2012/gmat-reading-list/Contact with colloquial spoken English is good for other aspects of your career, but that does not help you very much with the GMAT, which is about much more formal written English, as it used in academic or sophisticated business climates. That's what you need to be reading assiduously, every day, so that you adjust to these demands. When you read always think about GMAT Verbal tasks. Think about RC tasks (main idea, role of each paragraph, why was a detail mentioned, author's tone and perspective, etc.) For any arguments presented, think about CR tasks (strengtheners, weakeners; assumptions; what would allow you to evaluate the argument?, etc.) Look at individual sentences, and think about the grammar --- what modifiers what, parallelism, verb tenses, idioms, etc. All this work should be going on in the background, as you are also doing GMAT preparations.
On the GMAT side, here are some free GMAT Idiom flashcards:
https://gmat.magoosh.com/flashcards/idiomsHere's a GMAT RC practice question set on our blog:
https://magoosh.com/gmat/2013/gmat-readi ... questions/If you sign up for
Magoosh, we indeed have a 50-point money-back guarantee:
https://gmat.magoosh.com/score-guaranteeHere's a free SC lesson:
https://gmat.magoosh.com/lessons/944-substantive-clausesHere's a practice SC question
https://gmat.magoosh.com/questions/3257Here's a CR practice question:
https://gmat.magoosh.com/questions/3746Here's a one-month study plan:
https://magoosh.com/gmat/2012/1-month-gm ... -schedule/Since you have more than one month, I would highly recommend following the whole plan, then watching the entire series of Verbal lessons from start to end a second time.
Does all this make sense? Please let me know if you have any further questions.
Mike