初中英语时态了解——过去完成进行时 past perfect continuous tense 　　过去完成进行时指的是相对过去的某个时刻来说已经对现在有直接影响并且还在进行的动作，结构是had been doing 　　【例】My daughter had been writing diary everyday before I came home last week. 上周我回家之前，我的