人教版（2019）必修第二册Unit 3 The Internet Section B Discovering Useful Structure 教案
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| 名称 | 人教版（2019）必修第二册Unit 3 The Internet Section B Discovering Useful Structure 教案 |  | |
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| 文件大小 | 21.2KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-11-15 14:28:02 | ||
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Unit 3 The Internet
Section B Discovering Useful Structures
教学设计
Teaching Objects:
(1) Knowledge Objects:
a) Students will learn some words and phrases
b) Students will master the the structure of the present perfect passive voice through self-study and practice
(2)Ability Objective:
Students can use the structure of the present perfect passive voice to express their ideas.
(3)Emotional Objectives:
Students can foster the interest and desire of learning English grammar.
Key and difficult points:
Key point: Help students identify the structure of the present perfect passive voice.
Difficult points: How to use the structure of the present perfect passive voice in real situation
Major steps:
Step 1 Presentation
Read the pairs of sentences.Underline and compare the different verb forms.
1.Jan's life has been greatly improved by the Internet.
The Internet has greatly improved Jan's life.
2.Much has been written about the wonders of the World Wide Web.
People have written much about the wonders of the World Wide Web.
现在完成时的被动语态
一、基本结构：
have/has been +及物动词过去分词
二.现在完成时的被动语态的形式：
(1)肯定式：主语+ have/has+ been+及物动词的过去分词+其他。
The car has been repaired. 这辆汽车已经被修理过了。
(2)否定式：主语+ have/has+ not+ been+及物动词的过去分词+其他。
The house hasn’t been cleaned for a long time. 这所房子很久没有打扫了。
(3)一般疑问式：Have/Has+主语+been+及物动词的过去分词+其他
Has my letter been received 你收到我的信了吗？
(4)特殊疑问式：特殊疑问词+have/has+主语+been+及物动词的过去分词+其他 How long has the car been used 这辆汽车用了多长时间了？
三、主要用法：
1. 表示发生在过去的动作对现在产生的影响或结果，这个动作是被动的。当动词为短暂性动词的时候，可与already或yet连用，但不能与for或since引导的表示一段时间的状语连用。
This novel has been translated into several languages.
2. 还可以表示在过去发生的，已知延续到现在的并可能持续延续下去的被动动作或状态。常与for或since引导的时间状语连用，或用于“How long…？”句型中。
The machine has been used for 3 years.
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，即用现在完成时态的被动语态代替将来完成时的被动语态。
You can go home as soon as your homework has been finished.
四、注意：
1）现在完成时的被动语态的两个助动词：have/has和been 缺一不可。
2）注意与一般过去时被动语态的区别。一般过去时的被动语态表示一个被动的动作发生在过去，其结果对现在没有影响；而现在完成时的被动语态的动作或状态尽管发生在过去，但侧重说明该动作或状态对想在造成的影响或结果。 The machine has been repaired.
(说明动作发生在过去，对现在有影响，“修好了”)
The machine was repaired yesterday. (只说明动作发生在昨天)
3）不可与确定的表示过去或将来的时间状语连用（如yesterday, three days ago, in 1970,in 2050等），但可与不确定的时间状语连用（如 already，yet，just，often，recently，in the past few years等）
They have been punished recently.
4）有些动词像finish，buy，start，begin，return，join，marry，open，die等，表示的动作很短暂，我们称之为短暂性动词或非延续性动词。它们构成的现在完成时的被动语态不能够与for构成的短语，since构成的短语或引导的句子连用，也不能用于How long… 句型中。
Step 2 Practice
Students finish the exercise on page 18.Teacher will ask them to check the right answer on PPT.
Step 3 Production
Group task: Students will be divided in to several groups. Then share the results with whole class. Students are encouraged to use the grammar when talking.
（Justification: Students will learn to use the grammar in a proper way through those activities.）
Step 4 Summary and homework
1. Summary
Students should act as an assistant to conclude what they have learned in this class, and then the teacher will make a summary together with students.
(Justification: Reviewing the important knowledge in this lesson can deepen students' impression and form good study habits)
2. Homework
Finish the exercise in PPT.
(Justification: Retelling can help students sort out the course content, and the exercise can help students master the grammar better.)
2
Section B Discovering Useful Structures
教学设计
Teaching Objects:
(1) Knowledge Objects:
a) Students will learn some words and phrases
b) Students will master the the structure of the present perfect passive voice through self-study and practice
(2)Ability Objective:
Students can use the structure of the present perfect passive voice to express their ideas.
(3)Emotional Objectives:
Students can foster the interest and desire of learning English grammar.
Key and difficult points:
Key point: Help students identify the structure of the present perfect passive voice.
Difficult points: How to use the structure of the present perfect passive voice in real situation
Major steps:
Step 1 Presentation
Read the pairs of sentences.Underline and compare the different verb forms.
1.Jan's life has been greatly improved by the Internet.
The Internet has greatly improved Jan's life.
2.Much has been written about the wonders of the World Wide Web.
People have written much about the wonders of the World Wide Web.
现在完成时的被动语态
一、基本结构：
have/has been +及物动词过去分词
二.现在完成时的被动语态的形式：
(1)肯定式：主语+ have/has+ been+及物动词的过去分词+其他。
The car has been repaired. 这辆汽车已经被修理过了。
(2)否定式：主语+ have/has+ not+ been+及物动词的过去分词+其他。
The house hasn’t been cleaned for a long time. 这所房子很久没有打扫了。
(3)一般疑问式：Have/Has+主语+been+及物动词的过去分词+其他
Has my letter been received 你收到我的信了吗？
(4)特殊疑问式：特殊疑问词+have/has+主语+been+及物动词的过去分词+其他 How long has the car been used 这辆汽车用了多长时间了？
三、主要用法：
1. 表示发生在过去的动作对现在产生的影响或结果，这个动作是被动的。当动词为短暂性动词的时候，可与already或yet连用，但不能与for或since引导的表示一段时间的状语连用。
This novel has been translated into several languages.
2. 还可以表示在过去发生的，已知延续到现在的并可能持续延续下去的被动动作或状态。常与for或since引导的时间状语连用，或用于“How long…？”句型中。
The machine has been used for 3 years.
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，即用现在完成时态的被动语态代替将来完成时的被动语态。
You can go home as soon as your homework has been finished.
四、注意：
1）现在完成时的被动语态的两个助动词：have/has和been 缺一不可。
2）注意与一般过去时被动语态的区别。一般过去时的被动语态表示一个被动的动作发生在过去，其结果对现在没有影响；而现在完成时的被动语态的动作或状态尽管发生在过去，但侧重说明该动作或状态对想在造成的影响或结果。 The machine has been repaired.
(说明动作发生在过去，对现在有影响，“修好了”)
The machine was repaired yesterday. (只说明动作发生在昨天)
3）不可与确定的表示过去或将来的时间状语连用（如yesterday, three days ago, in 1970,in 2050等），但可与不确定的时间状语连用（如 already，yet，just，often，recently，in the past few years等）
They have been punished recently.
4）有些动词像finish，buy，start，begin，return，join，marry，open，die等，表示的动作很短暂，我们称之为短暂性动词或非延续性动词。它们构成的现在完成时的被动语态不能够与for构成的短语，since构成的短语或引导的句子连用，也不能用于How long… 句型中。
Step 2 Practice
Students finish the exercise on page 18.Teacher will ask them to check the right answer on PPT.
Step 3 Production
Group task: Students will be divided in to several groups. Then share the results with whole class. Students are encouraged to use the grammar when talking.
（Justification: Students will learn to use the grammar in a proper way through those activities.）
Step 4 Summary and homework
1. Summary
Students should act as an assistant to conclude what they have learned in this class, and then the teacher will make a summary together with students.
(Justification: Reviewing the important knowledge in this lesson can deepen students' impression and form good study habits)
2. Homework
Finish the exercise in PPT.
(Justification: Retelling can help students sort out the course content, and the exercise can help students master the grammar better.)
2