“要不是…就…”
HSK 5
要不是 + A，就 + B
表示假设（虚拟）。
Examples
要不是你帮忙，我就失败了。Yàobúshì nǐ bāngmáng, wǒ jiù shībài le.
If it hadn't been for your help, I'd have failed.
要不是下雨，我们就出门了。Yàobúshì xiàyǔ, wǒmen jiù chūmén le.
If it hadn't rained, we would have gone out.
