Learning about Language教学设计模板

北流市实验中学高一导学案

BOOK 2 Unit3 Computers Period 4 Grammar The present perfect passive voice (现在完成时的被动语态) 主备人 卢洁梅

Step I Lead- in Enjoy some pictures and discuss them. Step II Review the Present Perfect Task 1 Find the common part of these sentences and make a conclusion 1. They have broadcasted the program since 1997. 2. Five people have hosted the program for a long time. 3. Most people have thought highly of it. 4. They have invited many stars to this program so far. 5. Many young people have already loved HeJiong. 小结：以上句子使用了 时态, 该时态结构为 ，

该结构属于 （主动

/

被动）语态 . Step III Deduce the Present Perfect Passive Voice through an example. e.g.  They have broadcasted the program since 1997.  The program has been broadcasted by them since 1997. 方法指导：比较两个句子发现：

（1）句①中的宾语

the program

变成了句②中的 语，人称代词they 由 格变成了 格；

句①的主语they变成句②中 + sb. 结构；如果sb.为人称代词，应该使用 格；

句②中谓语结构还多了一个 。以上三个变化使句子由主动变成了被动语态。

(2) 句②中谓语结构为 ，被称为现在完成时的被动语态；

其含义为 。

Task 2 Turn the following sentences into the Present Passive Voice according to the example above. (根据上述例句把下列句子改为现在完成时的被动语态)

1. Five people have hosted the program for a long time.

2. Most people have thought highly of it.

3. They have invited many stars to this program so far.

4. Many young people have already loved HeJiong.

注意：（1）改写句子后注意检查句中 是否一致，主语是单数的时用 ；谨记been形式不变。

（2）上述句子中还出现了标志性的 词，例如 ； 用于 时态，但是否用于被动语态，还需判断 关系。

Task 3 Ability improvement （能力提升）

Fill the blank with the right forms(用所给词的正确形式填空) Recently a new computer (buy). The computer (use) every day since we bought it . Our computer (join) to the Internet. However, so far many problems (find) with it. Soon the computer (fix). These days a lot of E-mails (write) on the computer. 小结：做题时注意是否需要考虑时态和语态，且莫要忘记主谓一致。

Step IV Group work Nowadays, the environmental pollution becomes more and more serious, especially the haze(雾霾)

pollution. Look at the pictures, and then make some sentences by using have/has been done

图1 图2

图3 图4 Key words

Step VI Homework Finish exercises on the workbooks. 图2

图3

图4

disease face mask measure cause sell take pollution on the internet government 图1 city attack haze