"became appreciative" is correct and usable in written English.
It means to start feeling grateful or thankful. Example: After seeing all the hard work and sacrifices her parents had made for her, Sophia became appreciative of their efforts.
Both Harolds, Nicolson and Acton, became appreciative customers ('Mon cher Lulu,' wrote Nicolson from Paris, 'merci pour la soirée délicieuse'); and so, during the course of the summer, did... Robin".
The more I became appreciative, the more I wanted to take better care of the various aspects of my life, including my body.
That's when I became exceedingly appreciative of Twitter and Facebook.
Later that year Blackstone was paid £200 by the Prince, who became an "appreciative, loyal, and soon to be incomparably influential patron".
After these changes were made, the test audience became more appreciative of the series, and GSN announced its development to the public at an upfront presentation in New York City on March 21 , 2012for the network's upcoming programming.
After a few romps the high school flame burned out quickly and she became newly appreciative of a husband "who was mature and interesting and the father of my children".
"We lacked knowledge and understanding about malaria until [trainings] were conducted and our minds became more appreciative of how best we can prevent ourselves from acquiring malaria," she says.
"When you live with music like this for so long, you become more appreciative of what the composer could do than when you were young and took it all for granted," he said.
When the gallery was first established in 1993, said Rana Snober, its chief executive and daughter of Ms. Orfali, Jordanians were not too enthusiastic about abstract art, but she has seen them become more appreciative.
His writings have helped me become more appreciative of what it means to be an American citizen".
And now, with the GOP in power and owning the matter, Republicans have suddenly become more appreciative of the slow pace at which government often works.
