The phrase "aware of preparations" is correct and usable in written English.
You can use it when indicating that someone has knowledge or consciousness of certain arrangements or plans being made.
Example: "She was aware of preparations for the upcoming event and contributed her ideas to the planning committee."
Alternatives: "conscious of arrangements" or "informed about preparations".
American officials were aware of Saddam's preparations to invade Iran in 1980, and they later provided him with targeting information used in chemical-weapons attacks; the weapons themselves were built with the help of Western European firms.
Asked whether Mr. Ban was aware of Western military preparations, the spokesman reiterated that "the secretary general has made it very clear repeatedly that all parties need to give peace a chance".
[Investigators] have selected to compare the lipid data discussed above for exosomes and HIV particles with those reported for DRM preparations from KB and KBC cells [primary source 67], as these are the most detailed lipid analyses [they] are aware of for such preparations.
Indeed, becoming aware of the Persian preparations for the coming invasion, the Athenians voted for the construction of more ships than Themistocles had initially asked for.
She said that while some law enforcement agencies, notably in Los Angeles County, train their officers to be aware of such cases, preparation for the most part is "very sporadic".
As naive as it sounds, I was not aware of the sheer amount of preparation needed to craft what one hopes will be a successful course.
Negotiators say that the French, who have put a massive diplomatic effort into the last year of preparations, are acutely aware of the risk that any agreement will be foiled not by a lack of political will to forge a deal, but by being bogged down in the unwieldy details of the text.
"This was in the build-up to D-Day," says Michael. "The Warwickshires were in the first waves on the Normandy beaches". Michael says his mother and others were aware of the magnitude of their preparations but not what their purpose was until somebody shouted: "We've landed in France".
The idea that the "merit" of a student can be measured accurately -- and the potential achievement of a student be predicted -- by a standardized test result is absolutely flawed, particularly when some students benefit by extra tutoring and preparation and other students are not even aware of the existence of tests or preparation.
The patient-study numbers were blinded so that the observers were not aware of the type of bowel preparation.
