"it is challenging when" is a grammatically correct and usable phrase in written English
It can be used to introduce a sentence that discusses a difficulty or obstacle. For example: "It is challenging when trying to learn a new language without any prior experience."
The veteran actor Roger Rees gives an impeccably judged performance in the central role of Arthur, a man who appears to wear his ethical rectitude lightly, until it is challenged when his son is expelled from the naval academy where he has been studying.
"I was breast-feeding at the time, and while it was challenging when I traveled, I did have the support at work to take the time I needed.
"It's difficult and it's challenging when people desire in their own way to exploit the message and the mission of Dr. King for their own personal gain," she said.
"It's challenging when she sees other female friends with their moms and she can't help but break into tears asking why she doesn't have a mom, that it's not fair.
Dr. Desmond, who is upsettingly young (it's challenging when the sociologist that you want to be when you grow up is basically your age), flips the relationship between poverty and housing instability on its head: eviction is a cause, not a symptom, of poverty.
You have no idea Applying any ethical criteria is challenging when it comes to fashion – so isn't it time we had Fairtrade labelling for clothes?
Ministers had been warned it would be "challenging" when the body was set up, she said, adding that the new management "has received substantially more funding".
This inclusivity however is challenged when it comes to real fieldwork opportunities, especially in geoscience disciplines (Hall, Healey, & Harrison, 2002).
But dividing things into professional and personal has always been challenging when it comes to the former reality star, who hasn't stopped sharing all the intimate details of her thoughts on life via her preferred medium, Instagram.
