初中英语遥完成时态讲解与练习课件结构：have/has+V.
(过去分词)用法：表示过去发生或已经完成的某一动作对遥造成的影响或结果。
时间状语：ever, never, just , already, yet,before eg.
I have never seen the film.
They have just finished the work.
The boy hasn’t cleaned his room yet.