Learning about Language第二课时教案

Unit

3

Computers

learning about language 

Teaching Goals 1.To help students learn and grasp The Present Perfect Passive Voice. 2.To help students learn to use The Present Perfect Passive Voice correctly and properly. 

Teaching difficult points Enable the students to master The Present Perfect Passive Voice correctly.



Teaching aids Workbook and PPT 

Teaching procedures Step 1 Revision To help students make a revision of the future passive voice by giving them the following exercises: ①The new film ____________ next Thursday.

这部新电影将在下周四上映。(show) ②The meeting ______________ tomorrow. (hold) 明天不再举行会议。

③—____ the work ________ at once? (finish) 这项工作会立刻被完成吗？

④_____ will these books __________? (publish) 这些书将在什么时候被出版？

④The ink has not been removed from the clothes. ⑤The problem _____________________ at the meeting tomorrow. (be going to) 这个问题将不在明天的会议上被讨论。

⑥The machines ____________________ tonight.

今晚将不会修理这些机器。(be to do) 参考答案：will be shown; won’t be held; will

be finished; When

be published; isn’t going to be discussed; are not to be repaired. Step 2 Observing and discovering Observe the six sentences on the ppt and find out the differences. ①Over time I have been changed quite a lot. ②Since the 1970s many new applications have been found for me. ③The important problem has been discussed for nearly two weeks. ④The ink has not been removed from the clothes. ⑤Haven't your problem been solved? ⑥How many buildings have been built in your school? Discoveries:(1)以上例句中都使用了________________________。

(2)以上例句中第①②③句是该时态的________句式；第④句是____句式；第⑤句是

句式；第⑥句是________句式。

参考答案：现在完成时的被动语态

肯定

否定

一般疑问

特殊疑问

Step 3

Study the Present Perfect Passive Voice 1. Structure 肯定式

否定式

一般疑问式

特殊疑问式

主语＋have/has been done ... 主语＋have/has not been done ... Have/Has＋主语＋been done ...？

疑问词＋have/has＋主语＋been done ...？

2.

Usage (1)现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在造成的影响或结果，通常与already, yet, just, never, recently等副词连用。

The machine has already been repaired. 机器已经修好了。

(2)表示一个被动的动作或状态开始于过去，持续到现在，并可能持续下去，常与for或since引导的时间状语连用，或用于“How long ...？”句型中。

Financial problems of the company have been discussed for nearly two hours. 公司的财务问题已被讨论了近两个小时了。

How long has this film been shown? 这部电影已放映多长时间了？

(3)用在时间或条件状语从句中，表示将来某时已完成的动作，即用现在完成时的被动语态代替将来完成时的被动语态。

You shouldn't leave school before your homework has been finished. 在你的作业没完成之前你不应该离开学校。

常与现在完成时连用的时间状语：

already 已经

yet 已经

recently/lately 最近

since then 从那时起

ever since 自那以来

ever 曾经

so far 迄今为止

for a long time 很长一段时间

by now 到现在为止

in recent years

在最近几年里

in/during/over the past/last years

在过去的几年里

3.

Key Points (1)只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。

His boss has already punished him. →He has already been punished (by his boss)．

(2)带有双宾语的动词，如give, send, bring, take, teach, show, tell, make, sing, write, read, sell, buy, pay, lend, pass, promise等，变为被动语态时，一般将间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。

Step 4

Homework