They're my father,mother ,sisther,brother and I.要是的话怎么改呀?

问题补充：
前一句有There are five people in my family .然后是They're my father,mother ,sisther,brother and I,如果把I去掉,就不是5个了
到底是去and I还是改成me啊
有前句,这是有上下文的,不能去.改成me.
问题补充：
前一句有There are five people in my family .然后是They're my father,mother ,sisther,brother and I
这样还算通.要都放上来啊,
I ----me 放在BE动词后面,是做表语的,最好用宾格.
They're my father,mother ,sisther,brother and I.
他们是我的.父亲母亲,姐姐哥哥,还有我..
and I.去掉.