YOU SAID:

I am just surprised he doesn't recognize you.

INTO JAPANESE

私は彼があなたを認識していないことに驚いています。

BACK INTO ENGLISH

I am surprised that he doesn't recognize you.

INTO JAPANESE

彼はあなたを認識しないことに驚いています。

BACK INTO ENGLISH

I'm surprised that he doesn't recognize you.

INTO JAPANESE

彼はあなたを認識していないことに驚いています。

BACK INTO ENGLISH

I'm surprised that he doesn't recognize you.