要不是 (yào bú shì): if it were not for

If it weren't for you reminding me, I would have almost forgotten today's meeting.

If it weren't for the traffic jam, we could have arrived on time.

If it weren't for him lending a hand in time, I might have gotten into big trouble.

If it weren't for my mother insisting that I learn piano, I wouldn't have my current achievements.

If it weren't for the rain, we would have gone to the park for a picnic.