YOU SAID:
Hello my name is mary and i am bad.
INTO JAPANESE
こんにちは私の名前はメアリーと私は悪い。
BACK INTO ENGLISH
Hi my name is Mary and I are bad.
INTO JAPANESE
こんにちは私の名前はメアリーと私は悪い。
BACK INTO ENGLISH
Hi my name is Mary and I are bad.
That didn't even make that much sense in English.