YOU SAID:
I'm afraid I can't to that, Dave.
INTO JAPANESE
私はそれができないのではないかと心配しています、デイブ。
BACK INTO ENGLISH
I'm worried I can't do that, Dave.
INTO JAPANESE
できないのではないかと心配している、デイブ。
BACK INTO ENGLISH
Dave is worried he can't.
INTO JAPANESE
デイブは彼ができないことを心配しています。
BACK INTO ENGLISH
Dave is worried he can't.
That didn't even make that much sense in English.