UNIT4 The Internet Connects Us Lesson21教案冀教版八年级下册

UNIT 4: The Internet Connects Us
Lesson 21 Books or Computers
LESSON PREPARATION
LANGUAGE KNOWLEDGE
掌握词汇：appear, modern, electronic sell (sold/sold)
接触词汇：press
短语和句型：pass on, by hand, printing press. keep on
RESOURCES
audiotape large strips of construction paper
LESSON STRUCTURE
CLASS OPENING
Greeting
Greet the class.
Teacher: Good morning/afternoon, class. I have some funny jokes for you today.
Write three jokes (related to the Internet) on the board. Read them aloud and then discuss the concept/meaning of the letter "e" before each word. Explain that "e" stands for electronic.
So"e-mail" really means "electronic mail". Sample jokes:
Do you like web jokes Yes, they're e-larious.
What do you call a fire at an Intemet cafe An e-mergency.
How do you fix a broken website With stick e-tape.
Review
1)Homework check.
2)Choose some students to present their list and short passage "How Computers Help Me".
KEY CONCEPTS
FOCUS STRUCTURES:
They wrote each word by hand. Information travels faster and farther.
STEP 1: Present
CLASS WORK: Think About It and Culture Tip
Discuss the Think About Ir questions as a class.
2) Discuss the Culture Tip. Then draw a Venn diagram on the board to discuss and display the similarities and differences between e-books and printed books.
answer the questions in groups.
STEP 2: Read
GROUP WORK: Let's Do It! No.I
1)Instruct the students to read Lesson 21 and
2) Check, discuss and correct the answers as a class. Teach the mastery words for this lesson (appear. modern, electronic, sell)
STEP 3: Practice and Play
CLASS WORK: Let's Do It! No. 2
1) Divide the class into groups and have every group write out each sentence from Let's Do lt! No.2 on a separate strips of construction paper.
2)Then challenge the groups to put the sentences in the correct order. The first group to complete this task in the shortest amount of time wins. Remind students that they may need to skim through the reading to complete this task.
Teaching Point
Skimming is useful when you want to get the main point(s) of a longer piece of writing. If a student has an hour to do some research and is presented with 10 textbooks, then he does not have the time to read them all through. He must try to make the most of his time by quickly skimming each book and choose the most relevant one. Skimming can also be an effective way of quickly reviewing something that has been read previously. so that the reader can recall the most significant parts.
STEP 4: Task
PAIR WORK: Let's Do It! No. 4
1) Instruct the students to work in pairs to discuss whether they prefer e-books or paper books and why.
2)Then ask the students to write a dialogue based on their discussion. Students should use the adverbial clause with "if' in their dialogue and as many mastery words from this unit as possible.
3) Ask some pairs to present their dialogue in front of the class.
2) Assign homework:
The Printing Press or the Internet: Answer Li Ming's question in a short passage. Choose a position and give at least three reasons to support your choice. o Which invention do you think is more important-the printing press or the Intemet EXTENSION
CLASS WORK: Alphaber Scramble
Play Aiphaber Scramble to review vocabulary from Unit 4.
Ask the students to find partners and to write down the alphabet in a column on the left side of a piece of paper.
2)Ask them to work with their partners to remember as many vocabulary words from this unit as possible. The students write the words next to the letter that begins each word. They may write up to three words beside cach letter.
3)Give the students five to ten minutes to write down words.
4) Ask them to call out the words they wrote. starting with A. Have the students count their points as you go; vocabulary words from Unit 5 will be given priority and will be worth two points, while other words not from this unit will be worth one point. The team with the most points wins.
*See the "Games" section at the back of this guide for other variations of this game and further instructions on how to play.
LANGUAGE NOTES
I. In ancient times, there were no books, and people passed on their knowledge by telling stories.在古 代，没有书，人们通过讲故事传播知识。
pass on 意为“传递”。例如：
May I trouble you to pass on a message to her 烦您 给她捎个信儿行吗？
Pass the book on to me when you've finished with it.你看完那本书后请传给我。
2. Later. people learned how to write and make paper.后来，人们学会了如何写字和造纸。
how to write and make paper 是由关系词引导的动 词不定式结构，作宾语。本句也可以转换为宾语从句 how they could write and make paper,例如：
Do you know when to leave Do you know when you/we will leave 你知道什么时候出发吗？ Let me show you where to go on the map. "Let me show you where we will go on the map.我在地图 上指给你我们将去哪里。
3. With paper, people began to write down their stories.人们开始用纸把故事写下来
介词with表示“用”，后面跟工具。in表示“用”，后常加语言、墨水和颜料。by表示“用”，后跟交通工具。例如：
He writes with a pen. 他用钢笔写字，
He wrote a letter in ink.他用钢笔写了一封信。 We travelled to Europe by air.我们乘飞机去欧洲 旅行，
4. They wrote each word by hand.他们手写每一个 字
each意为“各自，各个，每个”，用于单数名词前，后接单数谓语动词。例如：
Each student has been given his or her own e-mail address.每个学生都得到一个属于自己的电子邮件地址。
each 用于复数主语后，谓语动词用复数。例如：They each have their own e-mail address.他们每人 都有自己的电子邮件地址。
each of.each one of后接复数名词或代词，但谓 语动词经常用单数形式。例如：
Each (one)of the houses was slightly different.每幢 房子都稍有不同
5. Information travels faster and farther.信息传播 得更快更远了。
farther 是far的比较级，最高级是farthest。例如： Tom jumps farther than Jim. He jumps farthest of all the boys.汤姆比吉姆跳得远。在所有的男孩儿中，他跳得最远。
6. No matter what you have, a computer, a tablet, a laptop, an e-reader or a real book, keep on reading! 无论你有什么，台式电脑、平板电脑、笔记本、电子阅读器或者一本真正的书，坚持读下去！
keep on doing 意为“继续做某事”，表示动作是时断时续的。keep doing 表示不间断地做某事。例如：
I keep reading the whole night.我整晚都在看书。 The little monkey stopped to have a look, then kept on eating its banana.小猴子停下来看了看，然后 继续吃香燕。