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！
Gamification is about understanding what it is that make games engaging and what game designers do to create a great experience in games.我知道what引导的是宾语从句, 但是在从句作什么成分了？
..., and felt warm with that most comfortable of parental emotions, gratitude to one's own child. that most comfortable of parental emotions这半句是什么结构啊？comfortable 形容词后加个of，什么用法呢？还是说comfortable后有省略？
If we_______200 years old,we______everything.A.were to be,could change B.had been,changed C.were,would have changed D.should be, changed.这道题，C为什么不对，从句对现在事实的虚拟，主句对过去事实的虚拟。就像“我要是...
It could be anything—gardening,cooking,music,sports—but whatever it is,______(make)sure it's a relief from daily stress rather than another thing to worry about.填的答案是make。第二个破折号（红色的）在语法上有什么功能？but连接的是哪两个句子？
-Why is he so slow? He has to carry his shell on his back.-Why has the tortoise got that shell thing on his back?...这个语法术语有点搞不清,例句中都有宾语了,句意还不完成,所以后面加一个介词短语,而这个部分就叫宾补吗?
At the shop, they wanted to show me all the dresses, but I was
interested only in the one in the window.各位老师好，请问这里的the one为什么不可以用that呀？是因为介词后面不可以用that吗？
-- I was trying
to repair that stupid machine, but I failed.-- Well,
you_______.A. needn't do
that B. needn't have done C. needn't have D. needn't这道题该选哪一个呢，如果B是needn't have done
that是否正确？dare和need在省略方面的用法一样吗？
...篇介绍筷子的文章中有一句话：What's been really interesting to see is that as Asian cuisine has moved from the east into the west.我认为这句话单词what后面的系统词is和单词see后面的系动词is重复了，如果我这个想法不对，请详细解释分析一下这句...