初中英语人教新目标 (Go for it) 版九年级全册Section B完美版ppt课件

设计说明

本课时学习与生活中的发明相关的写作。教学时先从复习重点单词和短语入手，导入新课，然后讨论生活中遇到困难的事怎样解决，怎样推销新产品等，为写作做好铺垫，帮助学生完成写作任务。通过Self Check的练习，进一步巩固本单元中的重要句型。

教学目标

通过本课时的学习，让学生达成以下目标：

1. 知识目标：

(1)单词：nearly  

(2)短语：decide on, come up with

(3)句子：①This is because sometimes a few people may invent things which are nearly the same.

②It’s hard to tell who came up with the idea first.

2. 能力目标：

(1)熟练掌握被动语态的用法；

(2)学会使用被动语态介绍某项发明。

3. 情感目标：

培养学生热爱科学、勇于探索的精神。

重点难点

1. 重点：(1)用英语介绍某一项发明；

(2)一般过去时的被动语态。

2. 难点：写一篇介绍某一项发明的文章。

教学准备

PPT课件

教学过程

Step 1 Lead-in

Review some of the important expressions.

1. 把……分成……        divide …into…

2. 阻止某人做某事        stop sb. from doing sth.

3. 钦佩；仰慕            look up to

4. 鼓励某人做某事        encourage sb. to do sth.

5. 实现某人的梦想        achieve one’s dream

Discussion:

Have you ever come across any difficulties in your daily life?

I am not able to take notes quickly in class.

It’s very hard for me to get up early.

I’m worried about my everyday homework.

Can we invent something new to solve those difficulties?

Step 2 Writing  

Work on 3a.

Think of something that you do not like to do. Then think of an invention that could help you. Make notes.

Problem: quickly taking notes in class

New invention: a special pen

What it is used for: taking notes for me 

It can take notes automatically.

Problem: getting up early

New invention: a special clock

What it is used for: waking me up

It can call me up with the voice of my teacher.

Problem: doing homework

New invention: a robot

What it is used for: doing homework with me

It can be my favorite homework partner.

Work on 3b.

Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.

This special pen was invented by Liu Jie. It has three colors and is used for…

Sample:

This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and all the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.

Step 3 Play a game

谁的发明最畅销？

将有6位同学扮演“推销商”上台向同学们“推销”自己的发明，台下的每位同学都有一票选择权，得票最多的“推销商”获胜。

（注：在“推销”发明时需全程使用英语）

Summary

我们在推销一件产品的时候，通常会从哪几个方面去描述呢？

What is the invention?

Who invented it?

When was it invented?

What is it used for?

Step 4 Self Check

1. Complete the passage with the correct forms of the words in the box.

It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may _______ things which are nearly the same. It’s hard to tell who came up with the idea first. Some inventions can also lead to other inventions _______. So some people _______ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or _______ usually _______ more than one inventor when giving information about inventions.

Check the answers one by one.

Answers:

invent; all of a sudden; doubt; websites; mention

2. Rewrite these sentences using the passive voice.

(1) Someone stole my watch.

  _________________________________

(2) They used five eggs to make this big cake.

  _________________________________

(3) When did they invent the personal computer?

  _________________________________

(4) They asked us not to run in the hallway.

  _________________________________

(5)Someone took the video back to the store.

  _________________________________

Check the answers.

Answers:

(1) My watch was stolen (by someone).

(2) Five eggs were used to make this big cake by them.

(3) When was the personal computer invented?

(4) We were asked not to run in the hallway (by them).

(5) The video was taken back to the store (by someone).

3. Find out information about an invention you would like to know more about and write sentences below.

Invention: _________________________

When: _________________________

Who: _________________________

Purpose: _________________________

Step 5 Homework

Mary在某英语学习网站就“The Most Useful Invention”这一话题发帖，征集网友的看法。假如你叫李华，你认为最有用的发明是因特网，请你根据Mary的帖子给她回帖。

The Most Useful Invention

Mary—Wednesday, March 11, 2020

I am writing a paper about inventions for my English class, and I need some ideas. What do you think is the most useful invention? Thanks for your ideas.

要求：

1. 简要阐述因特网的用途(至少三个)；

2. 词数90左右(回帖的部分内容已给出，不计入总词数)。

板书设计