Lesson 4:
  past + hou ga ii,   hazu "should be"
  amount (hodo, kurai)
  similaritives (?) =-) (no you, mitai, rashii)
  comparatives
  cause and pass
  commands, requests, et cetera
  suki/kirai
  potential form
  trans vs intrans
  quoting and "to"
  probability (ka na, darou/deshou, kamo shirenai)
  conditional forms (nara, eba, tara, to, baai)
  have to's & mustn't's
  te wa + dame, ikenai, naranai