YOU SAID:
i ate my uncle but i cooked him first
INTO JAPANESE
私は私の叔父を食べたが私は彼を最初に調理
BACK INTO ENGLISH
I ate my uncle but I cooked him first
INTO JAPANESE
私は私の叔父を食べましたが、私は最初に彼を調理しました
BACK INTO ENGLISH
I ate my uncle, but I cooked him for the first time
INTO JAPANESE
私は私の叔父を食べたが、私は初めて彼を料理した
BACK INTO ENGLISH
I ate my uncle, but I cooked him for the first time
That didn't even make that much sense in English.