The phrase "are certain preferred" is not correct in standard written English.
It seems to be missing a noun or subject to clarify what is being preferred.
Example: "In this context, there are certain preferred methods for conducting the experiment."
Alternatives: "are some favored" or "are specific choices".
As much as we loved college, there are certain times we prefer to forget.
"There are certain instances where you would prefer one over the other," said Alan Ruby, an ophthalmologist based in Livonia, Mich., who received nearly $12,000 from Genentech in the second half of 2013 for conducting what he described as workshops to educate other medical professionals about Lucentis.
Lotinga says that while there has been an increase in sales of ebooks and subscriptions in non-consumer areas, such as education and academic titles, there are certain types of consumer books people prefer to read in paper format.
"The question is whether speech that goes to the very heart of government should be limited to certain preferred corporations; namely, media corporations," he said in a speech to the Federalist Society, a conservative group.
However, this is not an ideal world, prioritizing should be put into effect, and at the end of the day, I am certain students would prefer to have teachers in the classroom before anything else".
TiN coatings deposited by various physical vapor deposition (PVD) processes often exhibit certain preferred orientations, which are heavily affected by process parameters.
On several occasions I have commented to the Mayor, when he asked me to represent him, that I was certain that he would have preferred to be here, that the audience would have preferred that he be here, and I would have preferred not to be here.
Instead of admitting the best and brightest, elite colleges stick to an arcane blueprint which is drawn with bold lines favoring certain preferred groups.
He said he would have preferred to be certain that the ordeal was over but observed that in his years in public life, he had been investigated so much that he had almost grown accustomed to it.
You can check with the insurer before purchasing insurance to be certain that the doctor you prefer accepts their insurance.
