（如果）没有，要不是
without
If it wasn't for the life jacket, I would have drowned. 如果没有这件救生衣，我就淹死了。
If it wasn't for their support, we wouldn't have been able to continue.
I wouldn't be here if it weren't for Bruce.
We would not have been able to fund the program if it weren't for the grant.
If it hadn't been for that doctor, my father probably wouldn't have survived.
See also: for preposition (BECAUSE OF)