YOU SAID:

I never realized that there was a bat down here.

INTO JAPANESE

ここにコウモリがあることに私は一度も気付かなかった。

BACK INTO ENGLISH

I never noticed that there was a bat here.

INTO JAPANESE

私はここにコウモリがいることに気づかなかった。

BACK INTO ENGLISH

I did not notice that there was a bat here.

INTO JAPANESE

ここにコウモリがいることに気づかなかった。

BACK INTO ENGLISH

I did not notice there was a bat here.

INTO JAPANESE

ここにコウモリがいるのに気づかなかった。

BACK INTO ENGLISH

I did not notice there was a bat here.