My oldest son had just finished an extended holiday stay prior to moving to a newstate,a new job,and the next chapter in his life.本句中stay prior是什么意思，做句子的什么成分呢？如果是这么短的定语，为什么会后置呢？谢谢老师了
... nouns; verbs are used less frequently.(2) All classifiers of a given type in a language may have one kind of source (either nouns or verbs); classifier systems of mixed origins — some from nouns, and some from verbs.上面两段话，介绍的是 classifiers 的来源：名词或动词。向各...
Some survivors were found to have suffered psychiatric disorders in the aftermath of the earthquake. Others were trying hard to blot out the memory of the tragic event.请问，句中的 have suffered 表示的是从过去的某一时刻起至今都在遭受精神错乱的困扰吗？
If breeders were willing to breed to dogs with fewer exaggerated characteristics and judges in the show ring began rewarding those dogs, change could happen,” she said.不好意思没有前后文。文章大致是关于杂交狗研究，杂交育种之类的。
People who work in offices are frequently referred to as “white-collar workers” .这里的 be referred to as，其中的 refer 是不及物动词吧，所以才接介词 to；可是不及物动词不是没有被动式吗？以及后面的 as 又做什么成分?
But my own worry today is less that of the overwhelming problem of elemenal literacy than it is of the slightly more luxurious problem of decline in the skill even of the middle class reader.请问这里less than 是什么句型吗，意思是什么?
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?
She used to wait outside film studios all day, just _____ (appear) in crowd scenes.老师，这边填to appear, 是目的状语吗？ 但是为什么不可以认为是结果状语，用appeared, 站了一整天，也仅仅只是出现在群演的画面中。
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？
The portion of Americans aged 18 to 29 who claim to have had no sex for 12 months has more than doubled in a decade—to 23% last year. That is, counter-intuitively, despite the removal of many impediments to sex.介词 despite可以连用 be 吗？比如最后一句话。
Most of the matter strictly appropriate to a Preface you may find, if you so elect, in the Foreword addressed to Sinclair Lewis.为什么这里的appropriate to前面没加be系动词，如果换做动词也只有及物动词。