如果你想询问关于某人被嫉妒他的英语能力的事情，你可以这样说:

"Why are they envious of his Engpsh skills?"

"What makes them jealous of his abipty to speak Engpsh?"

"How do they feel about his proficiency in Engpsh?"

这样你就可以问出关于嫉妒的问题，并且可以得到关于他们嫉妒的原因的回答。