请问这是个什么句子 and hence后为什么主谓都省略了? and hence中的and和谁是并列关系? Under modern conditions,this
requires varying measures of centralized control and hence the help of
specialized scientists such as economists and operational research experts.
...大量的时间观察马的动态和表情。翻译:Trained in France, the Chinese master studied
equine anatomy, spending hours observing horses'movements and expressions.请问老师:spending 在这里并不是非谓语中的动名词,为何在这里却能做主语?
...or man
when he died.为何不能说=He died when he was a poor man呢
c.The fire is burning low这一组夸克说省略后续成分不影响句意。是在说low是状语吗?第2组The weather is
continuing mild.这一组,需要和补足语(complementation)连用。所以这个地方,mi...