Once the fire was going , he laid stones on the fire. When hot , he
placed them in an empty oil drum with kau kau(sweet potato), corn and greens.问：学状语从句的省略时，省略的前提之一就是从句的主语必须和主句主语相一致且有be动词时就可以省略，可本句当...
Here they wait out the frozen months, feeding mainly on sagebrush blown clear of snow.它们在这里度过冰天雪地的几个月，主要以被雪刮掉的灌木蒿为食。blown clear of snow什么意思，被雪吹落的灌木又是啥意思？
Unemployment on blacks was twice as high as that for white.我不明白为什么第二个as后面为什么要写that for white, 其实我觉得直接写as whites, 就可以了。而且原句中white没加s，我估计是作者笔误。请老师详解，这两个as到底是什么词性？还是不用...
Erected in 1824,this gothic building of store and steel was stacked six floors high on a foundation of granite.这里还原一下stack building six floors high，six floors high是宾补吗？six floors作为名词修饰形容词high?
With an average of 70%, the vehicle A's operational availability on the road, was better than compared to 62% of Vehicle B. 这个句子中than后跟了一个过去分词短语，应该如何理解？这样的用法有错误吗？希望老师解答，谢谢！
..., the world government decides to physically move Earth away from destruction and embark on a centuries-long voyage to a new solar system.定从的先行词是story还是future？谢谢老师。
Business ads on TV, radio and newspaper provide useful and valuable information about a product or service to target audiences, help them to compare qualities of different products and choose the most cost-effective one.请问这句target audiences逗号后无连接词为什么可以直接跟help？
许多语法书和词典都说，英语习惯上不能将although与but连用，但是下面这句如何解释？
Soon he was President of the new South Africa. But
although he had suffered for so long, he did not want to take his revenge on the
white minority.
...这句摘自高中英语新教材人教版必修一 p5：Her first impression was that English was difficult and people spoke
too quickly, but soon she found that if she concentrates on the ideas, not the
single words, she could understand!请问句子中的 that if 引导的是什么从句啊？
老师好！请看下面一个句子：If each person plays their part—even for just one meal a day—Hong Kong would already be on its way to making considerable progress towards sustainable seafood consumption.请问为什么后面用了虚拟语气，但if从句是一般现在时。