倒装句:so/neither的倒装

eg: He can swim. So can I.
  She didn't go to class. Neither did I.

结构:
  so/neither+be+ 主语
  so/neither+助动词+ 主语
  so/neither+情态动词+ 主语

助动词:
     一般现在时: do, does/am, is, are
  现在进行时: am, is, are
  一般过去时: did
  现在完成时: have, has
  一般将来时: will, shall
  过去进行时: was, were
  过去完成时: had
  过去将来时: would