YOU SAID:
oh no i can't stop him
INTO JAPANESE
ああ、私は彼を止めることはできません
BACK INTO ENGLISH
Oh i can't stop him
INTO JAPANESE
止められないわ
BACK INTO ENGLISH
I can't stop him.
INTO JAPANESE
止められないわ
BACK INTO ENGLISH
I can't stop him.
That didn't even make that much sense in English.