So do I和So am I有什麽不同?翻译出来为什麽是一样意思?

两者是根据上文提到的动词而定,如果是Be动词,就用so am/was/shall I.
如果是一般的动词,就用so do/did/will I.
例：
He is very careful.So am I(动词为is)
He does his homework carefully,so do I.(动词为does)
翻译过来都是：我也一样.