这句话的主语是什么啊

问题描述:

这句话的主语是什么啊
The settlement is home to nearly 1,000 people,many of whom left their village homes for a better life in the city.
大主句是The settlement
定语从句中whom作宾语,那么主语是什么呢

定语从句中whom作介词of 的宾语,那么主语是manymany还可以作主语么?貌似不可以吧many可作代词或形容词,这里是代词,代词可以作主语啊如;I like music. I 就是代词作主语啊