He is a student,so am I 啥意思?尤其是后半句?

一楼翻译正解.
so+be/do/does/did/have/had+人称代词表示某人也是一样.
比如,He has done his homework,so have I.
I like playing basketball,so does he.
so后面的动词与前面半句时态是相同的.