Are the budget airlines in a different strategic group than the major network airlines?
Is it a correct sentence? If I rewrite this sentence in an affirmative form, it could be
The budget airlines are in a different strategic group than the major network airlines.
But my question is about after linking verb are (before preposition in) whether something is required or not?
My question is about whether something is required between the words are and in. If I say:
I'm better at English than Karim.
that would be a correct sentence. But if I say
I'm _______ at English than Karim
then a question arises:
I'm ... what? ... at English than Karim.
Something, I mean an adjective (like better), is required between am and at.