要是不及时退烧，年轻人就没命了。

The fever, if not brought down, might and would kill the young fellow.

野狗在后面追我，我没命地跑。

I ran for my life when the wild dog was chasing me.

快点，因为如果你再等一秒钟，我就没命了！

Only hurry, for if you wait another second, I'll be dead and gone!

它并不是一个杀手，如果它是的话，杰德现在已经没命了。

The animal was not a killer. If it had been, Jed would be dead now.

妈妈告诉我村里人把我救上来的，我在水里可游了好几百米，差点都没命了。

Mother told me i was rescued by a villager, I swam in the river a few hundreds meters and almost lost my life.