YOU SAID:
Hello hello hello i am a big
INTO JAPANESE
こんにちは私は大きな午前
BACK INTO ENGLISH
Hi I am big
INTO JAPANESE
こんにちは、私は大きいです
BACK INTO ENGLISH
Hi, I'm big
INTO JAPANESE
こんにちは、私は大きいです
BACK INTO ENGLISH
Hi, I'm big
That didn't even make that much sense in English.