我在书上看到一短句，Her job is taking care of children. 后面写着动名词短语作主补。 这正确吗？这里并不是被动句子，为什么称它主补而不是表语呢？
I am the infamous creature （you have heard of）（that lives among the thieves.）无限加定语从句？
Rapid breathing and breathlessness can be a sign of lung disease, particularly asthma and bronchitis.请问老师，过快呼吸和上气不接下气后面的sign为什么不用signs?
The number of staff ______ is needed for quality control can be substantially reduced. 这句话为什么不能填as？
Adding to a woman's increased dose of stress chemicals,are her increased "opportunities" for stress这个句子如何理解？求解释
It lists about 1 600 000 continuously updated jobs， representingreding more than 25 000 of the top employers in virtually every industry and field.
The greatest historical treasure of all is London with its museums, art collections, theatres, parks and buildings.with介词短语在句子里当后置定语修饰伦敦还是状语？
这是人教版必修5的一道翻译题的答案This parclel of books is 250 yuan including postage and pack。分词短语在这里做什么成分？表语补足语？
But in the medium term, middle-class workers may need a lot of help adjusting.这个句子解析说adjusting做状语，这种ing形式的动词充当状语是什么现象呢？谢谢!
He utters a high-pitched cry,characteristic of pigs. 这里characteristic 是后置定语修饰cry还是插入语？
请问：Again, differences between people and the opportunity for natural selection to take advantage of it have diminished.我查看很多参考书，这里it指differences 但是differences不是复数吗？
That is roughly twice the size of the Indian banking system, as Bank Credit Analysts, a research company, has pointed out.请问老师，as 是介词，表示作为的用法吗？
我明白for可以表对象和用途，一般作后置定语如果表达“BBC的记者” 用the reporter for BBC还是 the reporter of BBC？为何？还是说两者可以互换？
an area twice the size of Wales 两倍于威尔士大小的地区an area为名词，twice 在area后应是修饰area的，而twice本身为副词，副词修饰名词？这里如何理解？
A bill was passed lowering the legal age of consent.请问这句中的现在分词 lowering 起什么作用？