《When was it invented》教学设计

2020-07-20 03:21陈娟
科学导报·学术 2020年27期
关键词:发明者被动语态听力

陈娟

教材分析:

《When was it invented》是人教版九年级第六单元的内容,主要是围绕“发明”主题开展的听说读写活动,教师试图通过这单元的学习让学生了解有关发明创造和发明史方面的知识,引导学生理解历史上的发明对人类生活的英雄,从而激发学生创造发明的欲望,培养学生的创造性思维。通过分析教材不难发现其编排特点,首先通过谈论生活中的一些重要发明及它们的作用自然引出话题,通过呈现目标语言It was invented. It is used for….引导学生了解薯片及茶叶发展过程,从而细品中外饮食文化的差异,了解西方国家传统饮食习俗和生活方式,从而培养学生的跨文化交际能力和英语思维。最后学习篮球发明故事,层层深入引导学生学习掌握目标语言,掌握一般现在时和过去时的被动语态变化。要求学生能用被动式句子叙述发明历史和发展历程,并能表述发明对人类生活的影响。

教学内容:

本篇文章主要是对该单元的第一课时1a—2d进行讲授。

教学目标:

知识与能力:掌握本单元重点单词,掌握单元重要语言结构和被动语态结构句子,能够用英语谈论物品被发明的时间,发明者,表达某发明的用途。

过程与方法:多媒体辅助教学,师生谈话教学,合作探究教学。

情感态度及价值观:了解近现代发明时间用途及历史,激发学生热爱发明的积极情感。

教学过程:

(一)多媒体辅助教学,导入新课

师:(多媒体课件)展示一些近代发明的图片与近代发明的发明者,让学生们将图片与发明者相连。

T:你们知道这些发明是什么吗?(生答)

T:那你们知道这些发明是谁发明的吗?(生答,教师引导学生将其对应连线)

(二)Presentation:学习一般过去时态的被动语态结构

教师让学生们看大屏幕上发明者的图片,并将句子改为被动语态。

如:-Karl Benz invented the first car in 1885.

-The first car was invented(by Karl Benz)in 1885.

(三)Talking:合作探究引导学生讨论1a

T:Look at the pictures in 1a.(引导学生结合问题讨论图片中的发明)

(四)开展听力活动1b

师:Tell Ss look at the pictures and years on the left.

师:播放录音让学生听并将听到的关于图片发明的时间对应起来。(再次播放引导学生对答案,由此锻炼学生英语听力。)

(五)同桌合作交流1c

Ss try to remember the invention and the year.

师:接下来我们同桌成一组合作开展角色扮演,通过以上的听力活动我们对发明物體的发明时间有了充分了解,你能根据课本中出现的例句对话与同桌练习句子吗?

(多媒体给出课本例句)

A:When was the telephone invented?

B:I think it was invented in 1876.

Let some pairs ask and answer in pairs.

(六)基于2a,2b学习新单词,练习听力

Look at the pictures then learn the new words.

Work on 2a:

T:Tell Ss they will hear some interesting inventions.

1. Look at the pictures in 2a. Discuss the things what they are used for.

2. Play the recording for the Ss to listen and number the pictures.

3. Play the recording again to check the answers.

Work on 2b:

1. Let Ss read the chart below. Explain some main sentences for the Ss. Make sure they know what to do.

2. Play the recording for the Ss to fill in the blanks.

3. Play the recording again to check the answers.

4. Listen again and fill in the blanks.

引导学生反复听2a录音,辨别图片中物品在录音中的出现的先后吮吸,并了解各项发明的发明者及用途,完善2b表格。

(七)基于文本信息练习对话 2c

1. Tell Ss to make conversations using the information in 2b. Make a model for the Ss.

A:What are the shoes with special heels used for?

B:They are used for changing the style of the shoes.

2. Let some Ss make conversations using the information in 2b.

3. See which group does the best.

(八)多种教学方法应用学习 2d

1. Show a picture of a zipper. what's this? and teach the word Zipper. Write it down on the blackboard. And where can you see zipper? collect the

answers and write them down.(pants,trousers,bags,backpacks,dressers,shoes,suitcase,etc)

2. Who invented the zipper ?(Who was the zipper invented by?)Read the conversation and find out the answer. If you find the the answer,please put up your hands.

3. Read it again and answer the following questions:

Who invented the zipper ?

When was the zipper invented ?

When was it used widely ?

Do they think it is a great invention? Why?

Check the answers and explain the language points at the same time and deal with the problems the students may have.

4. Play the tape for students to listen and repeat.

5. Role-play the conversation in pairs.

Then ask some pairs to act out their conversations.

教学反思:

在本节课教学过程中,教师通过借助多媒体课件的辅助引导学生学习本单元主题词汇,并创设生动形象的情境让学生理解,为了彰显学生的主体地位,教师给学生提供听说训练引导学生在谈论发明的过程中学习一般过去时被动语態结构,通过让学生在课堂中感知目标语言引导学生用相应的语法谈论发明,听力材料的深度利用,便于学生牢固掌握本课语言知识。这样不仅调动了学生的学习兴趣还促使课堂效率得以提升。但由于课堂时间有限,本节课涉及的内容较多,因此给学生留出的练习时间不足,课堂节奏快导致学生学习和使用语法口语练习的表达不流畅。

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