2019-2020年高中英语Unit21HumanBiologyCommunicationWorkshop教案2北师大版选修7.doc

2019-2020年高中英语Unit21HumanBiologymunicationWorkshop教案2北师大版选修7
 break up和 break down 用法
　　1. The ship broke up on the rocks.船触礁破裂了。
　　2. What broke up their friendship?谁破坏了他们的友谊。
　　3. Their marriage broke up . 他们的婚姻破裂了。
　　4. The police had to use force to broke up the crowd警察不得不用武力驱散人群。.
　　5. I am sorry to arrive late, but my car broke down halfway.抱歉我来晚了，我的车在半路上坏了。
　　6. The peace talks broke down without any agreement being reached.和谈失败了，没有达成任何协议。
　　7. I can’t have you breaking down in health.我不能让你的身体一天天垮下去。
　　8. Sugar and starch are broken down in the stomach.糖和淀粉会在胃里分解。
　　break up 是指打碎, 破碎, 分裂, 结束, 衰落, 分解, 变坏, 驱散。例如解散人群，关系破裂、某物破碎等。
　　Break down 是指毁掉, 制服, 压倒, 停顿, 倒塌, 中止, 垮掉, 分解。例如车发生故障，计划等失败、身体垮了、分解物质等。
　　matter
　　1. Is anything the matter ? 有什么问题吗？
　　2. You look a bit pale. What’s the matter with you ? 你看起来脸色有点苍白。 
你怎么了？
　　3. There is an important matter I would like to talk to you about.有一件重要的事情我要跟你讨论。
　　4. It doesn’t matter whether it rains or not tomorrow.明天是否下雨没什么关系的。
　　5. It doesn’t matter that you came late. 你来晚了没什么关系。
　　6. Pain doesn’t matter to him. He is very strong.痛苦对他来说没什么关系。他身体很强壮。
　　7. It doesn’t matter to me which one you choose.对我来说你选择哪一个都 没关系。
　　8. No matter what you do ,I won’t forgive you.不管你做什么，我都不会原谅你。
　　9. No matter where he is ,I will find him.不管他在哪，我都会找到他。
　　10. No matter how late you e, I will wait for you .不管你来得有多晚，我都会等你。
　 matter用作名词表示事件, 问题, 物质, 内容, 实质, 原因, (印刷或书写的)文件, (文章或讲话等的)素材，一般在句中用的时候要在matter的前面加上定冠词the。
　　matter用作动词表示有关系, 要紧,一般用于否定句或是问句中；后面可以跟what ，where，when ，whether等引导的从句。
　　to one’s surprise 结构
　　1. To my surprise , he could escape from that big fire.令我惊讶的是，他能够从那场大火里逃脱出来。
　　2. To our great surprise, our team won the football match. 令我们很吃惊的是，我们队赢了足球赛。
　　3. To my joy, I could pass the difficult math exam.令我高兴的是，我能 通过那次很难的数学考试。
　　4. To his sorrow, his whole house was destroyed in the earthquake.令他悲伤的是，他的整座房子都在地震中毁掉了。
　　5. To her delight, she has got a new job in the pany.令她高兴的是，她在那个公司里找到了一个新工作。
　　6. To our satisfaction, he could get the first prize in the petition. 我们满意的是，他在比赛中获得了一等奖。
　　7. To his amazement, his parents got him in such a short time.令他吃惊的是，他的父母亲在那么短的时间里就回来了。
　　8. To our excitement, we won the battle against the enemies.令我们激动的是，我们赢得了跟敌人的战斗。
　　to one’s surprise 类似的结构一般是to 后面跟物主代词 +表示感情或是情绪变化的名词，通常表示某人的一种情绪和感情。一般在句中作状语。
　　have sb do 与 have sb doing 用法比较
　　1. The boss often has workers work for a long time.那个老板经常让他的工人长时间工作。 
　　2. I would like to have him help me to finish the work.我想让他帮我完成那个工作。
　　3. Who would you rather have post this letter ? 你想让谁帮你寄这封信？
　　4. Don’t have the machine working all the time.不要让这个机器一直在运转。
　　5. It’s impolite to have him waiting outside for such a long time.让他在外面等这么长时间是不礼貌的。
　　6. You should be careful! Have the fire burning till tomorrow morning.你应该小心。让火一直燃烧到明天早上。
　 have sb do 表示让某人做某事 与 make /let sb do 近义；have sb doing 表示让某人一直做某事。与keep sb doing 近义。
　　前者表示让某人去做了某事，所以用不定式（have sb to do ）；后者表示让某人一直做某事，所以用现在分词（have sb doing）
　　in order to， in order that, so that 与 so as to用法探异
　　1． People must eat in order to live.人们必须吃饭才能生活。
　　2． He works very hard in order to support his family.他努力工作是为了养家糊口。
　　3． He got up very early in order to catch the first bus.他起的很早是为了赶上头班车。
　　4． We should work hard in order that we can pass the exam.为了能通过考试，我们应该努力学习。
　　5． They talked in a very low voice in order that they could not be heard.为了不让别人听见他们讲话，他们用很低的声音讲话。
　　6． In order to get home on time, he didn’t rest on his way . 为了能够准时回到家，他在路上都没有休息。
　　7． We hurried so as to be in time.我们赶紧走，好及时到。
　　8． Speak clearly so that everybody can understand you .请说清楚点，这样每个人都能明白你。
　　9． He often told lies, so that no one believe him .他经常撒谎，都没人相信他。
　　10. Please wear your sun glasses so that the sun won’t burn your skin.请带上太阳眼镜，这样太阳就不会晒伤你的皮肤。
　　这几个词组在意思是差不多的，都表示目的。
　 这些词组在句中一般做状语，表示目的。so as to 和 in order to 后面一般跟不定式；前者引导的动词不定式不可放在句首，而后者引导的可放在句首。so that 和in order that 一般后面跟从句。

2019-2020年高中英语Unit21Lesson1ChewingGum教案1北师大版选修7

Teaching Aims:
1. To improve the reading ability of the students and help them study the structure of the text and understand the text wholly.
2. To enrich the students’ knowledge about the advantages and disadvantages of chewing gum and encourage them to talk about the problem of students’ chewing gum in the school .

Teaching Difficulties and Emphasis:
1. Help the students to find more advantages and disadvantages of chewing gum.
2. Help the students to carry out the discussion.

Teaching methods:
1. Task-based teaching .
2. Individual and group work ; Discussing .

Teaching Aids:
puter and worksheets

Teaching Procedures:
Step 1: Leading -in
1. Show the picture of a NBA star (Micheal Jordan).
1) Who is the man?
2) What is the man eating?

Step 2:Reading
1. Do you like chewing gum?
2. Is it good or bad for our health?----- To chew or not to chew

3. Listen to the tape carefully and divide the text into several parts.
Part1 ( para 1 ): introduction
Part2 ( para 2-4 ): the advantages of chewing gum
Part3 ( para 5-7 ): the disadvantages of chewing gum
Part4 ( para 8 ): conclusion
4. Find the advantages and disadvantages of chewing gum in the text.

Advantages
Disadvantages
1.helping people fight bad breath
2.helping people stop tooth decay
3.helping people lose weight
4.helping smokers give up smoking

1.making digestion more difficult
2.causing feelings of sickness or headaches
3.leading to stomach sickness
4.making people neglect brushing their teeth

5.Find more advantages and disadvantages of chewing gum (show some pictures or videos).
6. Decide if the following statements are true or false.
1). Diet specialists seldom inform us that it is important to chew our food properly. ( F )
2).Chewing gum can not fight bad breath. ( F )
3). If you had chewed sugar-free gum regularly for two years, you would have lost up to 5kilos. ( F )
4). If people chewed 50 times per minute for 24 minutes, 70 kilocalories were burned. ( T )
5). Chewing gum can help smokers give up their bad habit more successfully. ( T )
6). When we chew gum, it will not cause our bodies to produce digestives juices. ( F )
7). Chewing gum for long periods of time will make our stomach bee tense. ( T )
8). Chewing sugar-free gum must cause the number of young people with bad teeth to rise. ( F )
9). On balance, it would be better to chew gum. ( F )

7. Fill in the blanks with the proper words which are in the text.
On one hand, chewing gum can fight bad breath. Some dentists believe that sugar-free gum helps to stop tooth decay. Gum controls people’s appetite so it can help people to lose weight. Gum can also contain medicine. It helps smokers give up their bad habit successfully.
On the other hand, chewing gum has its negative side. Diet specialists say chewing starts the production of stomach acid and digestive juices. It will make digestion more difficult and may cause feelings of sickness or even headaches. Further, chewing gum for long periods of time may lead to stomach sickness.
On balance, we’d better forget chewing gum, eat healthy foods and never start smoking. So that we can live a healthy life

9.grammer

8. Show the picture about the pollution in the Tiananmen Square on National Days.
1). Where is it?
2). What are they doing?
9. Introduce something about the news

Step 3:Discussion
Nowadays many students like chewing gum in the school. Some students chew gum after a meal to get a good smell. However, some chew gum in the class or even when they are having a test then throw it anywhere. Do you think it right for us students to chew gum in the school? Give your reasons.

Step 4:Homework
Write an article about your discussion:
Do you think it right for us students to chew gum in the school?