The phrase "a very large portion of" is correct and usable in written English.
It can be used when referring to a significant part of a whole, often in discussions about quantities, demographics, or distributions.
Example: "A very large portion of the population supports the new policy, indicating widespread approval."
Alternatives: "a significant amount of" or "a substantial part of".
And I would say that in a very large portion of the cases I see, they were not warranted".
Analysts say that Bayer and Akzo are different from most other chemical companies, because they derive a very large portion of their profits from pharmaceutical products.
Despite the many times one sees it argued in print, a very large portion of the people in this country see nothing morally wrong with abortion.
In 1965, as the Second Vatican Council was modernizing the church, he unsuccessfully pushed for a change in church policy in support of nuclear armament by Western powers because, as the petition he wrote said, it "has preserved freedom for a very large portion of the world".
To the Editor: Re "Costs and Benefits" (editorial, July 20): Having recently lost my 87-year-old father to pancreatic cancer and my mother to lung cancer 10 years ago, I find that my experience with them leads to the following suggestion: There is enough evidence that a very large portion of total health care costs are incurred during the final stages of one's life.
What these men fear the most, they said, is the alternative that is being offered and suggested and fought for by at least some of the demonstrators: "The danger of this is that a very large portion of them follow the Ayatollah who openly says he wants a theological system similar to what is in Iran," said Yacoub, referring to "And Bahrain as a modern Arab country.
In addition, the computer simulations show that a very larger portion of high-level classification (λ2) can improve the final prediction in some real-world data sets.
In this way, we fix λ1 = 0.2 (due to good values found in [11]) and λ2 = 0.6 (to provide a very larger portion of the high-level classification).
Our different population estimates made under varying assumptions indicate a late 1990's shortnose sturgeon population in the Hudson River estuary of about 60,000 fish with adults comprising a very large portion (>90%) of the population.
Of note, when simple metabolic measurements and insulin sensitivity indices in the fasting state (such as FPG, FPI and QUICKI) are used in conjunction with abdominal circumference, the predictive power of the model increases and explains a very large portion (~70%) of the variation in insulin sensitivity.
Of all the sources of CO2 emissions, power plants burning fossil fuels, especially coals, account for a very large portion.
