最新中职数控技术应用专业实用英语授课教案：4.1
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10. specially专门地，特殊地
11. electric电的
12. proper适当的
13. supply供给
14. wiring接线，布线
15. typical典型的，
16. converter转换器
AC／DCconverter交／直流转换器
17. emergency紧急情况,突然事件,非常时刻,紧急事件
▲ 1. 关键词中“PLC可编程控制器，是programmable controller的缩写”又可解释为“PLC是programmablelogiccontroller的缩写”。
2. Two minutes for the students to read the key words by themselves.
▲1. The teacher asks a student to tell the Chinese meanings of the 11 words and phrases in Fig4-1-1.
2.Anotherstudent says the Chinese meanings of the 7 words and phrases in Fig4-1-2
▲1. The teacher reads the whole text and the students are asked to pay attention to the pronunciation and intonation.
2. One student reads the text and the other students just listen to him/her and try to get the general idea of the whole text.
Step II. Vocabulary study
1.alternating交互的
2.current电流,水流,气流
3. direct直流的直接的
4. fuse保险丝
5. extension扩充,扩展
6. block模块
7. switch开关
8. breaker断路器
9. indicator指示器；指示灯
emergency stop急停（开关）
18. power supply switch电源开关
19. main unit主单元、控制单元
20. input circuit power supply输入电路供电
21.input switch输入开关
22.input sensor输入传感器
Step III Text
4）extension扩展;to apply for extension on a visa申请签证延;期; My extension number is 886我的分机号码是886。
5)block模块,块,街区,Go ahead for three blocks and you will find the hotel you are looking for.向前走3个街区，你就会找到你正寻找的旅馆。
▲1. The students read the whole text and try to find the answers to the following questions.
1) Is PLC a computer?
2) Who write the program which a PLC works in accordance with?
1. Key words
2.Fast reading
3. Careful reading
4.Difficult points
5.Readingthe text
6. Summary
Step IV Dialogue
Step V Exercises in Class
Step VI Supplement
Step VIIHomework
1)alternating是alternate的现在分词，作形容词用。
2）current除作“电流,水流,气流”讲外，还有“当前的，流通的”词义；如，current events时事；current money
通用的货币
3）direct，派生词有direction, director，indirect
current当前的，流通的My extension number is 886我的分机号码是886。direct，direction, director;
wiringsupplyn & v：The boss will supply food for the
converterstaff.老板给员工提供食物。
6）indicator指示器；指示灯，由动词indicate派生。
7）electric电的= electrical
8)supplyn & vThe boss will supply food for the staff老板给员工提供食物。supply the market with new commodities向市场供应新商品; Supply falls short of demand供不应求
▲1. Exercises III and V are assigned as homework to be written in the exercise-books.
2.It worksinaccordancewiththe program that the userswrite.它是按用户编写的控制程序工作的。
that the users write用户编制的，是定语从句，修饰program。
3.…thepower supply should be 100～240V AC,50～60Hz.
2. One is AC, the power supply should be 100–240 V AC, 50–60 Hz.
教法
讲授法、提问启发法
课时
1课时大课(90分)
教具
Projector
板
书
设
计
Lesson One The Types of Power Supply for PLC
alternatingalternate的现在分词extension：apply for extension on a visa申请签证延期
教材
分析
这一课是PLC英语的第一课，生词很多；虽说课文不难，但学生刚开始接触这方面的知识，必然要有一个思想转弯的过程。
教学
重点
本课教学重点是词汇：current, direct, block, electric, supply, wiring, emergency.
教学
难点
1. extension, supply
2) The teacher asks another student to say the Chinese meanings of the words which begins with“e”,“f”, and“i”, the other students spell them.
3) The teacher asks a third student to say the Chinese meanings of the words which begins with“p”,“s”,“t”and“w”, the other students….
3)Does a PLC need a power supply for its work?
4) What is the voltage of AC power supply for a PLC?
5) What is the voltage of DC power supply for a PLC?
它的供电电压为100～240V，（交流电的）频率为50～60Hz
Hz hertz赫,频率单位，次/秒
4.图4-1-1右面的表格中有（11）breaker，但在书中没有标出。11.breaker应该标在图4-1-1左面的电路图中右侧靠近①的 处。
▲1.The students read the whole text again.
2. The students retell the text with the help of the reference translation of the text.
▲The teacher gives a brief account of the text
▲Sincethedialog consists of only two sentences, the teacher just asks two pairs of students to read it, each pair once.
课题
Lesson 1The Types of Power Supply for PLC（U4-L1）
授课
日期
年月第课时
教学
目标ห้องสมุดไป่ตู้
知识目标：通过学习本课，使学生了解PLC的电源及接线是如何用英语表达的。
能力目表：能够在实际操作中认识PLC中主要电器元件的英文标示，能够通过这些英文标示，准确布线。
情感目标：学生由原来的数控机床英语，转换到有关PLC电源、电器件、接线的英语，让学生有信心掌握涉及数控多方面的英语知识，增强学生信心。
Step VIIISelf-checklist
▲1. The teacher reads all the words twice.
2. The students read the words by themselves for five minutes.
3. The teacher explains the following:
emergency: n & adj
e.g emergency landing紧急着陆
emergency room (of a hospital)急诊室
教
学
后
记
教学内容
教学过程
Step 1 Lead-in and Warm-up
Switch on the projector to show Figure4-1-1and Figure 4-1-2 and ask the students whether they have any idea about the two figures.
9）wiring名词“接线，布线”，是动词wire变来的动名词。
10）emergency: n & adj e.g emergency landing紧急着陆
emergency room (of a hospital)急诊室
4. 1) The teacher asks one student to say the Chinese meanings of the words which begins with“a”,“b”,“c”and“d”. Then all the other students spell them in chorus. For example, the students says“交互的”(which begins with“a”), all the other students spell“a-l-t-e-r-n-a-t-i-n-g”. Then the student says“模块”（which begins with“b”）, all the other students spell it,“b-l-o-c-k”.
2. Four students form a group and 1) discuss the whole text. 2) discuss the five questions above.
▲The teacher copes with difficult points：
1.A PLC is a kind of computer specially used for electric control.specially used for electric control是做定语的过去分词短语，修饰computer
3. The students do Exercises I, II and IV in class after they have learned the text.
▲The supplementary material is assigned for the students to read after class.
11. electric电的
12. proper适当的
13. supply供给
14. wiring接线，布线
15. typical典型的，
16. converter转换器
AC／DCconverter交／直流转换器
17. emergency紧急情况,突然事件,非常时刻,紧急事件
▲ 1. 关键词中“PLC可编程控制器，是programmable controller的缩写”又可解释为“PLC是programmablelogiccontroller的缩写”。
2. Two minutes for the students to read the key words by themselves.
▲1. The teacher asks a student to tell the Chinese meanings of the 11 words and phrases in Fig4-1-1.
2.Anotherstudent says the Chinese meanings of the 7 words and phrases in Fig4-1-2
▲1. The teacher reads the whole text and the students are asked to pay attention to the pronunciation and intonation.
2. One student reads the text and the other students just listen to him/her and try to get the general idea of the whole text.
Step II. Vocabulary study
1.alternating交互的
2.current电流,水流,气流
3. direct直流的直接的
4. fuse保险丝
5. extension扩充,扩展
6. block模块
7. switch开关
8. breaker断路器
9. indicator指示器；指示灯
emergency stop急停（开关）
18. power supply switch电源开关
19. main unit主单元、控制单元
20. input circuit power supply输入电路供电
21.input switch输入开关
22.input sensor输入传感器
Step III Text
4）extension扩展;to apply for extension on a visa申请签证延;期; My extension number is 886我的分机号码是886。
5)block模块,块,街区,Go ahead for three blocks and you will find the hotel you are looking for.向前走3个街区，你就会找到你正寻找的旅馆。
▲1. The students read the whole text and try to find the answers to the following questions.
1) Is PLC a computer?
2) Who write the program which a PLC works in accordance with?
1. Key words
2.Fast reading
3. Careful reading
4.Difficult points
5.Readingthe text
6. Summary
Step IV Dialogue
Step V Exercises in Class
Step VI Supplement
Step VIIHomework
1)alternating是alternate的现在分词，作形容词用。
2）current除作“电流,水流,气流”讲外，还有“当前的，流通的”词义；如，current events时事；current money
通用的货币
3）direct，派生词有direction, director，indirect
current当前的，流通的My extension number is 886我的分机号码是886。direct，direction, director;
wiringsupplyn & v：The boss will supply food for the
converterstaff.老板给员工提供食物。
6）indicator指示器；指示灯，由动词indicate派生。
7）electric电的= electrical
8)supplyn & vThe boss will supply food for the staff老板给员工提供食物。supply the market with new commodities向市场供应新商品; Supply falls short of demand供不应求
▲1. Exercises III and V are assigned as homework to be written in the exercise-books.
2.It worksinaccordancewiththe program that the userswrite.它是按用户编写的控制程序工作的。
that the users write用户编制的，是定语从句，修饰program。
3.…thepower supply should be 100～240V AC,50～60Hz.
2. One is AC, the power supply should be 100–240 V AC, 50–60 Hz.
教法
讲授法、提问启发法
课时
1课时大课(90分)
教具
Projector
板
书
设
计
Lesson One The Types of Power Supply for PLC
alternatingalternate的现在分词extension：apply for extension on a visa申请签证延期
教材
分析
这一课是PLC英语的第一课，生词很多；虽说课文不难，但学生刚开始接触这方面的知识，必然要有一个思想转弯的过程。
教学
重点
本课教学重点是词汇：current, direct, block, electric, supply, wiring, emergency.
教学
难点
1. extension, supply
2) The teacher asks another student to say the Chinese meanings of the words which begins with“e”,“f”, and“i”, the other students spell them.
3) The teacher asks a third student to say the Chinese meanings of the words which begins with“p”,“s”,“t”and“w”, the other students….
3)Does a PLC need a power supply for its work?
4) What is the voltage of AC power supply for a PLC?
5) What is the voltage of DC power supply for a PLC?
它的供电电压为100～240V，（交流电的）频率为50～60Hz
Hz hertz赫,频率单位，次/秒
4.图4-1-1右面的表格中有（11）breaker，但在书中没有标出。11.breaker应该标在图4-1-1左面的电路图中右侧靠近①的 处。
▲1.The students read the whole text again.
2. The students retell the text with the help of the reference translation of the text.
▲The teacher gives a brief account of the text
▲Sincethedialog consists of only two sentences, the teacher just asks two pairs of students to read it, each pair once.
课题
Lesson 1The Types of Power Supply for PLC（U4-L1）
授课
日期
年月第课时
教学
目标ห้องสมุดไป่ตู้
知识目标：通过学习本课，使学生了解PLC的电源及接线是如何用英语表达的。
能力目表：能够在实际操作中认识PLC中主要电器元件的英文标示，能够通过这些英文标示，准确布线。
情感目标：学生由原来的数控机床英语，转换到有关PLC电源、电器件、接线的英语，让学生有信心掌握涉及数控多方面的英语知识，增强学生信心。
Step VIIISelf-checklist
▲1. The teacher reads all the words twice.
2. The students read the words by themselves for five minutes.
3. The teacher explains the following:
emergency: n & adj
e.g emergency landing紧急着陆
emergency room (of a hospital)急诊室
教
学
后
记
教学内容
教学过程
Step 1 Lead-in and Warm-up
Switch on the projector to show Figure4-1-1and Figure 4-1-2 and ask the students whether they have any idea about the two figures.
9）wiring名词“接线，布线”，是动词wire变来的动名词。
10）emergency: n & adj e.g emergency landing紧急着陆
emergency room (of a hospital)急诊室
4. 1) The teacher asks one student to say the Chinese meanings of the words which begins with“a”,“b”,“c”and“d”. Then all the other students spell them in chorus. For example, the students says“交互的”(which begins with“a”), all the other students spell“a-l-t-e-r-n-a-t-i-n-g”. Then the student says“模块”（which begins with“b”）, all the other students spell it,“b-l-o-c-k”.
2. Four students form a group and 1) discuss the whole text. 2) discuss the five questions above.
▲The teacher copes with difficult points：
1.A PLC is a kind of computer specially used for electric control.specially used for electric control是做定语的过去分词短语，修饰computer
3. The students do Exercises I, II and IV in class after they have learned the text.
▲The supplementary material is assigned for the students to read after class.