we和I、he、she、they、you、it（you和it稍微有点不同，下面讲）的地位、用法是一致的，无非就是指代的任务称呼和单复数不同

可以有does he/she/it，就可以有do you/I/we/they，还可以有did+所有

常见两种情况：

1、疑问句

---Do you love me? ---Yes, I do.

---Do I love you? ---No, you don't.

---How do they go to school? ---By bus.

---What do we do next? ---Clean our classroom.

2、“我也是”So do I 延伸为各种So do XXX / So can XXX / So be XXX等

He knows Japanese and so do I.

I love animations and so do they.

---I think it's exciting. ---So do we.

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附：it和you的特殊性

其它词语只能做主语，所以在人称代词表里它们只可能是“主格”

而it和you除了可以是主语，还可以是宾语，它们的“主格”“宾格”都是这个

I love you. You love me. “我”的主语、宾语格式不同，但you相同

I like it. It is delicious. “它”的主语、宾语格式相同