she is UP in the sky .这种用 up 和 down 副词作表语的,

有些副词常在句中作表语.这类副词可用于许多不同的时态和结构,其含义也随场合的变化而有所不同.这些句子一般结构简单,表现力强,容易上口,在中学课本中经常出现.同学们做“书面表达”也常用到.例如：
Tom wasn’t in when Mary dropped in on him yesterday.
昨天玛丽顺便拜访Tom时,他不在家.
Did Tom come while I was out?我不在家时汤姆来找我了?
Is the train in?火车进站了吗?
The train is off .火车开走了.
Is the gas off 关了煤气了吗?
The gas is on.煤气开着.
The fire is out.火熄灭了.
The workers are out.工人罢工了.
The film has been on for half an hour.电影已放映半小时了.
Their work is well on.他们的工作进展顺利.
Time is up now.到时间了.
They aren’t up.他们还没起床.
Mother will be up in a minute.妈妈一会儿就上楼来.
She asks them to be down for breakfast.她叫他们下楼吃早饭.
The sun was down.太阳下山了.
The river was down.河水落下去了.
All the villagers were up.全村沸腾了.
But she is badly down,you’d better have a talk with her.但她情绪低落,你最好找她谈谈.
Winter was over and spring has come.冬去春来.
The war was over.战争结束了.
Hard days were over at last.苦日子终于到头了
有些副词还与其他的词构成短语,在句子中作表语.这类结构在中学英语中出现的也很多.如：
What are you up to?你在干什么?
How far off is it?有多远?
She is well off .她很富有.
She is well on with the work.她的工作进展顺利.