YOU SAID:

and autumn comes when you're not yet done with the summer passing by. and i don't think I could stand to be, where you don't see me.

INTO JAPANESE

夏が終わっていない時には秋が来る

BACK INTO ENGLISH

Autumn comes when summer is not over.

INTO JAPANESE

夏が終わらないと秋が来ない。

BACK INTO ENGLISH

Autumn will not come until summer is over.

INTO JAPANESE

夏が終わるまで秋は来ないだろう。

BACK INTO ENGLISH

Autumn will not come until summer is over.