【要达成的目标】
Review the present perfect continuous tense
Finish the exercises
【“教”与“学”过程】
本堂课使用的电教手段
I.现在完成进行时的构成
have / has been doing sth.
II.现在完成进行时的用法
（1）现在完成进行时表示从过去某一时间开始一直延续到现在的动作。
现在这个动作可能刚刚终止，也可能仍在进行。
I have been learning English since three years ago
（2）表
示重复。现在完成进行时也用来表示一个动作的重复。
She has been saying that for years.
（3）表示关切、惊异、赞许、愤怒等感情色彩。
Too much has been happening today.
He has always been studying hard.
