英语：Unit2 tutorial centres-grammar学案（牛津上海版S2A）

（一）目标

复习比较现在完成时（主动和被动语态）和一般过去时，并且学习本课的重点语法时态点：现在完成进行时，达到以下两个目标：

1． 了解基本的构成；

2． 了解使用的情景，完成基本操练。

（二）要点详解：

About the present perfect continuous tense:

1. Formation

  has/have been + doing

2. Where to use

(1) We use this tense to talk about an action which started in the past and is still continuing.

e.g. I have been attending a tutorial centre for two months.

   You have been studying for ten hours. You must take a rest.

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