请问老师: There was problem after problem to overcome, not least of which was that their store of Polyjuice Potion was greatly depleted.这句话结构是什么?后半句加粗部分是什么从句?句中of起什么作用?
We're changing the atmosphere, the surface, the waters of the Earth, often for some short-term advantage when the long-term implications are unknown.这句中的 for 是介词还是连?是介词后半部分还有when从句(时间状语从句吗?)
So long as there's something to identify,we will give people their money back.请问,为什么例句中identify用主动形态,而不是被动形态? give people their money back 还能像双宾语那样前后调换位置吗?
The broken ______may cut into your hand if you touch it,you should be careful.( )A. glassB. glassesC. candleD. candles对于这道题,A做玻璃讲,肯定是符合题意的。那么B呢,做玻璃杯讲,似乎不行,因为后面用了it。但是作为眼镜来讲...
The rain ____, the soldier continue their march.A stopping B stopped C having stopped D being stoppedstop不及物,B选项过去分词stopped本身可以表示完成的意思,那和C选项现在分词完成时有什么区别?答案应该是哪个?
It was Sunday before he saw Mouse again. He was painting the garden shed for his dad when Mouse came racing along on his bike.根据以上句子提供的语境,请翻译黑体部分,并解释before的词义和用法。
有时现在完成时和现在完成进行时表达的意思一致。例如:She has worked on painting for six years. 她画画画了6年了。(还会继续)She has been working on painting for six years. 她画画已经画了6年了。(还会继续)这是怎么区分二者?谢谢!