YOU SAID:
I really wish I had some water.
INTO JAPANESE
私はいくつかの水を持っていたなあ。
BACK INTO ENGLISH
I wish I had some water.
INTO JAPANESE
私はいくつかの水がよかったと思う。
BACK INTO ENGLISH
I think some water.
INTO JAPANESE
私はいくつかの水と思います。
BACK INTO ENGLISH
I think some water.
That didn't even make that much sense in English.