资源简介
（友情提示：鼠标拖选单词即时翻译）
高一英语上册U4 Unforgettable experiences第二课时教案
Teaching aims and demands :
Some sentence patterns and difficult points of grammar .
Important and difficult points :
Attributive Clauses , the past perfect continuous tense and the present participles .
Teaching Procedures :
Step 1 疑难透析
1. What had he been doing before the earthquake ?
过去完成进行时表示在过去一个时间点以前一直进行的动作; 而现在完成进行时则表示从过去一个时间点开始一直进行的动作。例如:
I had been doing my homework before you came .
I have been doing my homework since I came back home .
注意 完成进行时都是强调动作的延续, 故其中的动词必须是延续性的。
考查方向 现在与过去进行完成时的辨异。