The phrase "alone studying" is correct and usable in written English.
It can be used to describe the act of studying without the company of others or in solitude.
Example: "I prefer alone studying in a quiet room where I can focus better."
Alternatives: "studying by myself" or "studying in solitude".
Nearby sat a young woman, a visitor to the museum, alone, studying the statue.
They sometimes will find him at the Giants' practice facility at 7 30 a.m., alone, studying tape of offensive tackles.
He had few friends, and spent most of his time alone, studying chess and analyzing previous games.
"I found it sad that at the end of the film, she is sitting in her apartment alone, studying or chanting," Rabbi Shinder said.
And now, 25 years later, he is just beginning to show what he has to show for it: the images of impending horror that he has lived with and dreamed of and spent hours alone studying in his darkroom.
Pulver was alone studying in her family's Sydney mansion on 3 August when the 51-year-old Peters, wearing a ski mask and wielding a baseball bat, tethered a bomb-like device around her neck.
We also know they are very hard to find, let alone study.
So many are processed every day that there is scant time to delve into detail, let alone study cases in advance.
Astonishingly, the extensive body of his posthumous works and papers was not ever systematically examined or properly catalogued, let alone studied in depth until recently.
As GM foods and other products are not monitored or labelled after release in North America, a major producer and consumer of GM crops, it is scientifically impossible to trace, let alone study, patterns of consumption and their impacts.
I never read, let alone studied Shakespeare.
