So am I与So do I关系?So I am和So I do的关系?

我来自北京i'm a beijinger
我也是so am i.（常用）
我喜欢杰克逊i love michael jackson
我也喜欢so do i.（常用）
我以前是杰克逊的歌迷（一般情况下是指现在不是了）.i was a big fan of michael.
我以前也是.so was i.(常用)
我刚从北京回来.i just got back from beijing.
我也刚从那回来.so did i.(常用)
你建议我面对现实,我照做了you told me to face the reality,so i did(常用),i took your advice.
so i am(不常用)