Hot ___ the night air was,we slept deeply because we were so
Hot ___ the night air was,we slept deeply because we were so tired after the long journey.
答案是as,有一个选项是althouth,我想知道为什么although不行.
我的想法是:这是让步状语从句,although同样可以引导让步状语从句,但是如果是alth的话从句不用倒装,而用as从句要倒装.我的理解正确吗?错误的话真正的原因是什么,