YOU SAID:

I saw the sign, and it opened up my eyes. I saw the sign.

INTO JAPANESE

看板を見て目が開いた。看板を見た。

BACK INTO ENGLISH

I looked at the sign and my eyes opened. I saw the sign.

INTO JAPANESE

看板を見ると目が開いていた。看板を見た。

BACK INTO ENGLISH

His eyes were open when he saw the sign. I saw the sign.

INTO JAPANESE

彼は看板を見て目を開いた。看板を見た。

BACK INTO ENGLISH

He opened his eyes at the sign. I saw the sign.

INTO JAPANESE

彼はその看板を見て目を開けた。看板を見た。

BACK INTO ENGLISH

He opened his eyes at the sign. I saw the sign.