北师大版高中英语选修七Unit 21《Lesson 1 Super Athletes》教案 1
1 Unit 21 Lesson 1 教学设计
Teaching aims:
To read about the effects of chewing gum.
To revise conditionals
To practice using mixed conditionals
Teaching difficulties: some students may not remember the first， second and third
conditionals well. The form of mixed conditionals may be difficult for some students to master
and they may need more practice with it.
Teaching Aids: computer and video rejection
Teaching procedures:
Step 1: lead-in
1. Show students advertisement an video about gum so as to raise their interest on chewing gum
and make them think of the effects of chewing gum in daily life.
2. Students work in pairs discussing the questions and require them to share their ideas with class.
Discuss in pairs and answer the following questions.
What do you think of chewing gum？ Is it good or bad for you？
Do you or your friends /family buy it？ Why？
What do you do after chewing it？
3. Students look at the title and predict which issues may be covered in the article. Then， students
work individually， reading the article quickly to find out which of their guesses were right.
Step 2: read to learn
1. Students divide the text into four parts， then summarize the main topic of each part.
Part 1 (paragraph 1--- 1 ) Introduction
Part 2 (paragraph 2 --- 4 ) Benefits of chewing gums
Part3 (paragraph 5 --- 7 ) The negative sides of chewing gums
Part4 (paragraph 8--- 8 )Better activities than chewing gums
2. Work individually， students try and fill the table with the information they remember from the
2 first reading. After finishing the table， students discuss it with each other and then check answers
as a class.
Advantage Disadvantage
Helping people:
1. fight bad breath
2. prevent/ stop tooth decay
3. lose weight
4. give up smoke 1.making digestions
more difficult
2. Causing feelings of
sickness or headaches
3. Leading to stomach sickness
4. Making people neglect brushing their teeth
3. Students work in pairs answering the questions. Ask them to locate the relevant parts in the text
which give the answers.
1. How serious is the problem of bad breath？
2. What is added to sugar-free chewing gum which may help prevent tooth problems？
3. According to one research project， what is one way of burning 70 kilocalories？
4. What would be the effect on the stomach of constant chewing？
5. What other activities are stated that are better than chewing gum？
Step 3: grammar
1. Students match the conditional sentences in italics in the text with the following types: zero
conditional， 1st conditional， 2nd conditional， 3rd conditional. Check students’ answers by
having individuals read out the sentences and then describe them.
2. Elicit an example from the class of each conditional form.
Step 4: consolidation
Choose the best answer.
Step 5: Homework: page 80， Ex1， 4
北师大版高中英语选修七Unit 21《Lesson 1 Super Athletes》教案 1
1 Unit 21 Lesson 1 教学设计
Teaching aims:
To read about the effects of chewing gum.
To revise conditionals
To practice using mixed conditionals
Teaching difficulties: some students may not remember the first， second and third
conditionals well. The form of mixed conditionals may be difficult for some students to master
and they may need more practice with it.
Teaching Aids: computer and video rejection
Teaching procedures:
Step 1: lead-in
1. Show students advertisement an video about gum so as to raise their interest on chewing gum
and make them think of the effects of chewing gum in daily life.
2. Students work in pairs discussing the questions and require them to share their ideas with class.
Discuss in pairs and answer the following questions.
What do you think of chewing gum？ Is it good or bad for you？
北师大版高中英语选修7Unit 20 warmup and lesson 1 Futurology教案 北师大版 选修7
Unit 20 Warm-up and Lesson 1
Teaching aims
I. words and phrases：
frontier telescope atom microscope astronomy bacteria radium solar crew panel
institute compute sense impact ethical radioactive polonium seminar life-sized screen
handy biochemistry theoretically robot database meanwhile source exploration barbershop
artificial intelligence, light year, search engine, solar system, take over, carry out, data
processing, the International Space Station, click into, in terms of,
II. listening and discussion about something of science
III.to read the text and study the language points
Teaching time
Two periods
Teaching process
Step 1 Revision
Step 2 new words learning
1.ask some students to read the new words first and correct their pronunciation
2.play the tape and have them read after the tape
2017--2018学年北师大版选修7 Unit 21 Human Biology Lesson 1 Super Athletes学案
Unit 21 Human Biology Lesson 1 Super Athletes A学案
一、英汉互译
1．与(其他事物)相矛盾 ____________
2. ____________ oppose
3. 有争议的 ____________
4．____________ compulsory
5. 滥用 ____________
6．____________ fundamental
答案：1.contradict 2.反对 3.controversial 4.强制性的，义务的 5.abuse 6.根本的；基础的
二、完成短语
1．不管多大代价 ______ all costs
2. 随意地 ______ random
3. 徒然，白费力气 ______ vain
4. 减速 slow ______
5. 偶然遇到 come ______
答案：1.at 2.at 3.in 4.down 5.across
三、从课文中找出下列句子并把它们译成中文
1．When we talk about breaking records，we come across the issue of performance-enhancing
drugs.
________________________________________________________________________
2．The sports world does not tolerate doping as it is a fundamental form of cheating.
________________________________________________________________________
3．If American athlete Marion Jones hadn't taken drugs，would she have made it to the
高中英语 Unit21 Lesson 1 Super Athletes教案 北师大版选修7
Unit 21 Human Biology
Lesson 1 Super Athletes
Grammar : Conditionals Revision
1．条件句有两类，一类是真实条件句，一类是虚拟条件句。
2．如果假设的情况是有可能发生的，就是真实条件句（Zero conditional）。真实条件句中的谓语用陈述语气。
Eg。If it doesn’t rain tomorrow, we will go to the par.
如果明天不下雨,我们就去公园.
3.如果假设的情况是过去或现在都不存在的,或将来不大可能发生的,则是虚假条件句,共有三种情况.
Eg. If he had seen you yesterday, he would have asked you about it.
如果他昨天见到你,他会问你这件事的.(事实上他昨天没有见到你,因此也未能问你这件事.)
4.在含有虚拟条件句的复合句中,主句和从句的谓语都要用虚拟语气.虚拟条件从句和主句的动词形式列表如下:
时间 从句 主句
与现在事实相反 动词过去式(be动词的过去式一般用were) would(should/could/might)+动词原形
与过去事实相反 Had+过去分词 would(should/could/might)+had过去分词
与将来事实相反 动词过去式/should+动词原形
were to+动词原形 would(should/could/might)+动词原形
5.虚拟条件句的用法
1) 表示与现在事实相反的假设和结果(1st conditional)
Eg. If I were you,I should/could/would/might tell him the truth.
如果我是你,我就会/可能对他说实话.
If he had time, he would/could/might go with you.
北师大版高中英语选修7Unit 21 Lesson 1 Super Athletes教案1 北师大版 选修7
Unit 21 Human Biology Lesson 1 Chewing Gum
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:
Computer 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
北师大版高中英语选修7Unit 21 Lesson 1 Super Athletes教案1 北师大版 选修7 2
研卷知古今；藏书教子孙。
Unit 21 Human Biology Lesson 1 Chewing Gum
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:
Computer 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
北师大版高中英语选修七Unit 21《Lesson 2 Brain Power》教案 2
1 Unit 21 HUMAN BIOLOGY
Lesson 2 Brain power
教学设计
Teaching Aims:
1. To read about athletes, doping and gene therapy.
2. To get the students to sum up the general idea of the text.
3. To practice using mixed conditionals.
Teaching Difficult & Important Points:
1. To get the students to sum up the general idea of the text.
2. To use the mixed conditionals.
Teaching Procedures:
Step 1 Revision
Check homework exercises.
Step 2 Learn the new words of Lesson 2
1. Ask some students to read the new words first and correct their pronunciation.
Key words: atom, billion, organ, cell, Nerve cell.
2. Play the tape and have them read after the tape.
3. Give them a few minutes to read the new words freely tell them if they can't read the words, ask
the teacher.
Step 3 Listening
1. Before you start
a) Students work in pairs, matching the key words with the definitions.
北师大版高中英语选修7 Unit21 Lesson 1 Super Athletes教案 2
研卷知古今；藏书教子孙。
Unit 21 Lesson 1 Chewing Gum
Teaching aims:
To read about the effects of chewing gum.
To revise conditionals
To practice using mixed conditionals
Teaching difficulties: some students may not remember the first, second and third conditionals
well. The form of mixed conditionals may be difficult for some students to master and they may
need more practice with it.
Teaching Aids: computer and video rejection
Teaching procedures:
Step 1: lead-in
1. Show students advertisement an video about gum so as to raise their interest on chewing gum and
make them think of the effects of chewing gum in daily life.
2. Students work in pairs discussing the questions and require them to share their ideas with class.
Discuss in pairs and answer the following questions.
What do you think of chewing gum? Is it good or bad for you?
北师大版高中英语选修7Unit 21 Lesson 1 Super Athletes 3
Unit 21 Lesson 1
Grammar :Conditionals Revision
1．条件句有两类，一类是真实条件句，一类是虚拟条件句。
2．如果假设的情况是有可能发生的，就是真实条件句（Zero conditional）。真实条件句中的谓语用陈述语气。
Eg。If it doesn’t rain tomorrow, we will go to the par.
如果明天不下雨,我们就去公园.
3.如果假设的情况是过去或现在都不存在的,或将来不大可能发生的,则是虚假条件句,共有三种情况.
Eg. If he had seen you yesterday, he would have asked you about it.
如果他昨天见到你,他会问你这件事的.(事实上他昨天没有见到你,因此也未能问你这件事.)
4.在含有虚拟条件句的复合句中,主句和从句的谓语都要用虚拟语气.虚拟条件从句和主句的动词形式列表如下:
时间 从句 主句
与现在事实相反 动词过去式(be动词的过去式一般用were) would(should/could/might)+动词原形
与过去事实相反 Had+过去分词 would(should/could/might)+had过去分词
与将来事实相反 动词过去式/should+动词原形
were to+动词原形 would(should/could/might)+动词原形
5.虚拟条件句的用法
1) 表示与现在事实相反的假设和结果(1st conditional)
Eg. If I were you,I should/could/would/might tell him the truth.
如果我是你,我就会/可能对他说实话.
If he had time, he would/could/might go with you.
如果他有时间,他就会/可能和你一起去.
北师大版高中英语选修7Unit 21 Lesson 1 Super Athletes 3 2
探索尚未知道的东西
Unit 21 Lesson 1
Grammar :Conditionals Revision
1．条件句有两类，一类是真实条件句，一类是虚拟条件句。
2．如果假设的情况是有可能发生的，就是真实条件句（Zero conditional）。真实条件句中的谓语用陈述语气。
Eg。If it doesn’t rain tomorrow, we will go to the par.
如果明天不下雨,我们就去公园.
3.如果假设的情况是过去或现在都不存在的,或将来不大可能发生的,则是虚假条件句,共有三种情况.
Eg. If he had seen you yesterday, he would have asked you about it.
如果他昨天见到你,他会问你这件事的.(事实上他昨天没有见到你,因此也未能问你这件事.)
4.在含有虚拟条件句的复合句中,主句和从句的谓语都要用虚拟语气.虚拟条件从句和主句的动词形式列表如下:
时间 从句 主句
与现在事实相反 动词过去式(be动词的过去式一般用were) would(should/could/might)+动词原形
与过去事实相反 Had+过去分词 would(should/could/might)+had过去分词
与将来事实相反 动词过去式/should+动词原形
were to+动词原形 would(should/could/might)+动词原形
5.虚拟条件句的用法
1) 表示与现在事实相反的假设和结果(1st conditional)
Eg. If I were you,I should/could/would/might tell him the truth.
如果我是你,我就会/可能对他说实话.
If he had time, he would/could/might go with you.