YOU SAID:

I have been looking at the water for quite some time.

INTO JAPANESE

私はかなりの時間のための水を見てきました。

BACK INTO ENGLISH

I have seen water for quite some time.

INTO JAPANESE

私はかなりの時間のために水を見てきました。

BACK INTO ENGLISH

I have been watching the water for quite some time.

INTO JAPANESE

私はかなりの時間のために水を見てきました。

BACK INTO ENGLISH

I have been watching the water for quite some time.