YOU SAID:

I wait for my train to arrive unless it is late.

INTO JAPANESE

遅れない限り、電車が到着するまで待ちます。

BACK INTO ENGLISH

I'll wait until the train arrives, unless it's delayed.

INTO JAPANESE

遅れていなければ、電車が到着するまで待ちます。

BACK INTO ENGLISH

If the train isn't late, I'll wait until it arrives.

INTO JAPANESE

電車が遅れていなければ、到着するまで待ちます。

BACK INTO ENGLISH

If the train is not delayed, I will wait until it arrives.

INTO JAPANESE

電車が遅れていなければ、到着するまで待ちます。

BACK INTO ENGLISH

If the train is not delayed, I will wait until it arrives.