Mary likes music that is quiet and gentle怎么看That是做主语?

问题描述:

Mary likes music that is quiet and gentle怎么看That是做主语?

这句话可以这样理
Mary likes music.
The music is quiet and gentle.
由于music重复了因此把两句合二为一所以用That.
原句中的That就是代指后一句中的The music,在后一句中that的部分就成了主语.