The phrase "a necessary role" is correct and usable in written English.
It can be used when discussing the importance or essential function of a person or thing in a particular context or situation.
Example: "In any organization, effective communication plays a necessary role in ensuring team collaboration and success."
Alternatives: "an essential function" or "a vital part".
Filling a necessary role for his productions.
DESPITE the greater success of the hybrid vehicle, Mr. Stempel and Mr. Iacocca say the battery-powered car has a necessary role to play.
Anglo American's media manager, Emily Blyth, said: "Coal plays a necessary role to support the developing world to access affordable energy".
7.43pm BST Lib Dems shed few tears for Hester Business secretary Vince Cable gave a rather muted reaction to the news that Stephen Hester was off: He performed a necessary role at a difficult time.
For a generation, there has been loose bipartisan agreement in Washington that the federal government has a necessary role to play in the nation's 13,600 school districts, primarily by using money to compel states to raise standards.
When he was a presidential candidate, he maintained the fiction that private insurance had a necessary role to play in a truly reformed health care system — a fiction that continues to demand deference from today's major presidential candidates, mounting evidence to the contrary.
Meeting 0.7% is critical – because aid does have a necessary role, particularly in fragile and conflict-afflicted states where governments may not even be able to prioritise gathering other sources of finance for development – such as collecting taxes from citizens or business.
Even if governments do better to avoid picking winners among basic research fields, they can play a necessary role in supporting specific scientific infrastructure that lies beyond the means of individual researchers or universities, like atom-smashers or the human genome project.
TOKYO — The mayor of one of Japan's largest cities, who is seen by some as a possible future prime minister, drew an outcry on Monday after he said women forced into wartime brothels for the Japanese Army during World War II had served a necessary role in providing relief for war-crazed soldiers.
The mayor of one of Japan's largest cities, who is seen by some as a possible future prime minister, drew an outcry when he said women forced into wartime brothels for the Japanese Army during World War II had served a necessary role in providing relief for war-crazed soldiers.
Page 12 G.O.P.'S EDUCATION GOALS For a generation, there has been loose bipartisan agreement in Washington that the federal government has a necessary role to play in the nation's 15,000 school districts, primarily by using money to compel states to raise standards.
