Question

Pq a frase "O que você esta fazendo" é escrita "What are you doing" e não "What you are doing?"

Answer 1

Porque pergunta em inglês muda a posição do pronome e o verbo auxiliar.

Answer 2

Distinct grammatical rules between Portuguese and English. That's all. You've certainly conceived the second sentence applying the grammatical syntax of Portuguese, yet in English it's wrong. Only the first clause is correct