YOU SAID:
Hello you are useless
INTO JAPANESE
こんにちは、あなたは駄目です
BACK INTO ENGLISH
hello you are no good
INTO JAPANESE
こんにちは、あなたはダメです
BACK INTO ENGLISH
Hello, you're not good.
INTO JAPANESE
こんにちは、あなたはダメですよ。
BACK INTO ENGLISH
Hello, you can't.
INTO JAPANESE
こんにちは、それはできません。
BACK INTO ENGLISH
Hello, that's not possible.
INTO JAPANESE
こんにちは、それは不可能です。
BACK INTO ENGLISH
Hello, that's not possible.
That didn't even make that much sense in English.