The phrase "a serious effort was" is correct and usable in written English.
You can use it when discussing the importance or intensity of an attempt or endeavor in various contexts, such as academic, professional, or personal situations.
Example: "A serious effort was made to improve the community's infrastructure, resulting in better roads and public facilities."
Alternatives: "a significant attempt was" or "a concerted effort was".
This was the first time a serious effort was made to tackle overcrowding in London and has made some good progress to date.
But the fact that such an encounter took place was taken as a sign that a serious effort was being made by the two sides to deal with the issues.
Other donors may follow.See article: Donors come back to KenyaNigeria said it would hand over to Liberia its former president, Charles Taylor, if that country wanted to try him for war crimes.A UN report said that a serious effort was at last being made to tackle AIDS, but that it was still "entirely inadequate".
Maybe the SMPY study shook up the education world so much that a serious effort was made to increase SAT-M scores for girls.
I might be more easily convinced of the merits of racinos, depending upon who owned them, how the tax revenue they generated was being spent and whether a serious effort was made to deal with addicted gamblers.
They might be a signal that a serious effort is being made this time around.
Owing to the growing concerns about the relatively high global warming potential (GWP) of current refrigerants, a serious effort is in progress to find lower-GWP substitutes.
The advantage of Delphi is that a serious effort is invested in finding the common ground among the experts and in finding the reasons and arguments that cause differences in assessments.
"It makes you wonder whether it could keep on happening unless a serious effort is made to look into where these spills are coming from and how they can be stopped.
Just as liberals (pace Ronald Dworkin) sometimes have to choose between ideals (e.g., freedom and equality) that come into conflict with one another if a serious effort is made to realize any one of them fully, so communitarians may have to make some hard choices between valued forms of communal life.
Unless a serious effort is made to educate the public of the "facts" that face our planet in terms of environmental degradation and the need to consider radical changes in our life styles and the way we use our resources, this planet will rapidly run out of the '"stuff" needed to sustain human life.
