请高手举例说明,分析英语句子成份
有些动词带宾语从句时需要在宾语与从句前加it（双宾语）；举例详细说明
The new book is about how Shenzhou 20 manned spaceship was sent up into space.
这本新书是关于神州20号载人航天飞船是如何升入太空的.分析句子成份；
He asked me if I was reading the story The Old Man and the Sea when he was in.
他问我他进来的时候我是否正在读《老人与海》.分析句子成份；