最新中职数控技术应用专业实用英语授课教案：3.4
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3. Ask some students to read the words.The teacher corrects their pronunciation when necessary.
4. Pair work: One student says the English words, the other speaks Chinese. The students practise in pairs.
----What is the function ofthe Feed Rate knob?
----It is used toadjustthe feed rate.
Step V Exercisesin claபைடு நூலகம்s
I.把字母重新排序组成单词
aowrr------arrowjustad-----adjust
▲1. The teacher reads the whole text.
2. The students read the text themselves.
3. Ask two individual students to read the text paragraph by paragraph.
4.Ask the students to discoveruseful words and expressions, then to do the exercise on the left.
5.Analysis of difficult points:
6.Reading competition
7.Summary
Step IV . Dialogue
----Whatdoes theManual Reference Pointreturnmean?
----It means that each axis returns to the machine zero manually.
Step III Text
1. Key words
the keysforaxismovement坐标轴移动键
ReferencePoint mode参考点方式
Jogmode点动方式
Manual handlemode手轮方式
2. Fast reading
3. Careful reading
Match the key phrases
（key：1. × 2 √ 3. √4. ×）
▲Difficult points
1. how to make the machine return to the reference point manually如何手动使机床返回参考点
带how的不定式短语作动词introduce的宾语。
ethesearrowkeys to move the coordinate axes.使用箭头键来移动坐标轴。
▲Askthe students to conclude the important phrases in this lesson, then choose some students to write them ontheblackboard.
▲The teacher asksstudents toread the following sentences and tell true or falseaccording to the passage to see how much they’ve understood.
1. You needn’t select the feed rate in the continuous feed by manual operation.
（key：1. The X axis 2. jog3.knob4.increases）
III.将下面的短语译成英语。
1返回参考点_______________________
2手动操作_______________________
3连续进给_______________________
4坐标轴移动键_______________________
3. Jog feed Rate
Use the“Feed Rate”knob to adjust the feed rate.
教
学
后
记
教学内容
教学过程
Step 1 Leading-in and Warming-up
1. Revision
2. Warming up for the new class
简述本节内容、要点，导出教学目标。本节课学习手动操作的内容。
2. If you press the spindle stop key, the spindle stops.
3. When you press the “jog” key, the system will be in the manual handle operation mode.
4. Press this key , and the spindle will rotate counter clockwise.
2.Ask students to answer teacher’s questions according to thetext ofLesson3.
▲1.Askstudents to work in groups of four to read new words and phrases.
2. Ask the students to read the words after the teacher.
2. When you press the jog key, the NC system will switch into _______ mode.
3.When you want to adjust feed rate, you rotate the feed rate ______.
4.If you rotate the feed rate knob clockwise, the rate _______.
1返回参考点manual operation
2手动操作return to the reference point
3连续进给the keysforaxismovement
4坐标轴移动键continuous feed
5增加decrease
6减小increase
4. Reading comprehension
▲The teacher picks out the important sentences, and ask the students to practise speaking loudly, clearly and fast.Then choose four students to have a competition,praise the best student and encourage the others.
▲Ask the students to read the text quickly and answer the question:
What does the text introduce?
( It introduces how to make the machine return to the reference point manually,manualcontinuous feed and jog feed. )
1. Manual reference point return
Use the“Reference point”key and the arrow keys.
2. Manual continuous feed
Use the“Jog”key , the“Feed Rate”knob and the arrow keys.
Step II Vocabulary study
1. arrown.箭,箭头记号
2. corresponding adj.相应的
3. adjustvt.调整,调节
4. continuousa.连续的
5. knobn.旋钮
6. selectv.选择
7. increasev.增加
8. decreasev.减小
3.according to the directions needed根据需要移动的方向。needed是过去分词，作后置定语。
4. The rate increasesif you rotate“FeedRate”knobclockwise.如果顺时针旋转该旋钮，修调倍率就增加。
表示旋钮转动的方向一般用clockwise，counterclockwise而不用right, left。因为旋钮一般是圆形的，从上面看向右旋转时，从下面看则是向左旋转。
Money can buy blood,but not life.
Money can buy medicine,but not health.
Money can buy insurance（保险）,but not safety.
You see, money is not everything.
▲1.Askthree goodstudents to recite theusefulsentencesinLesson 3and the others repeatthem.
教学
重点
掌握文章中涉及的专业词汇以及重点句型的分析。
教学
难点
三种手动操作的英语表达。
教法
1.Task-based teaching and learning
2.Cooperative learning
课时
1课时大课( 90分)
教具
a projector
板
书
设
计
Lesson 4 Manual Operation ( I )
Money can buy a bed,but not sleep.
Money can buy a clock,but not time.
Money can buy a book,but not knowledge.
Money can buy food,but not an appetite.
Money can buy position,but not respect.
3continuous feed4. the keysforaxismovement
5.direction6.increase
7.decrease8.knob
Step VIHomework
Step VII Self-checklist
Step VIIIA Poem
Money can buy a house,but not a home.
课题
Lesson 4 Manual Operation ( I ) (U3-L4)
授课
日期
年月日第课时
教学
目标
知识目标：掌握关于本课的基本词汇以及课文内容。
能力目标：提高学生的阅读理解能力。
素质目标：培养学生自主解决问题和相互合作的能力。
教材
分析
本节课学习如何使用手动方式使机床返回参考点、手动连续进给和点动进给。课文内容较简单，操作步骤也不难，学生容易掌握。
nobk------knobctsele-----select
reaseinc------increasereasedec------decrease
II.根据课文在每个句子的空白处填入适当的词
1)Whenyou press the down arrow key, ______ returns to the reference point.
5方向_______________________
6增加_______________________
7减小_______________________
8旋纽_______________________
1.return to the reference point2.manual operation
5.The teachermakes comments.
6. The teacher explains some words.
▲1. The students have been asked to preview the key words before the class.
2. Check how well they have previewed.
4. Pair work: One student says the English words, the other speaks Chinese. The students practise in pairs.
----What is the function ofthe Feed Rate knob?
----It is used toadjustthe feed rate.
Step V Exercisesin claபைடு நூலகம்s
I.把字母重新排序组成单词
aowrr------arrowjustad-----adjust
▲1. The teacher reads the whole text.
2. The students read the text themselves.
3. Ask two individual students to read the text paragraph by paragraph.
4.Ask the students to discoveruseful words and expressions, then to do the exercise on the left.
5.Analysis of difficult points:
6.Reading competition
7.Summary
Step IV . Dialogue
----Whatdoes theManual Reference Pointreturnmean?
----It means that each axis returns to the machine zero manually.
Step III Text
1. Key words
the keysforaxismovement坐标轴移动键
ReferencePoint mode参考点方式
Jogmode点动方式
Manual handlemode手轮方式
2. Fast reading
3. Careful reading
Match the key phrases
（key：1. × 2 √ 3. √4. ×）
▲Difficult points
1. how to make the machine return to the reference point manually如何手动使机床返回参考点
带how的不定式短语作动词introduce的宾语。
ethesearrowkeys to move the coordinate axes.使用箭头键来移动坐标轴。
▲Askthe students to conclude the important phrases in this lesson, then choose some students to write them ontheblackboard.
▲The teacher asksstudents toread the following sentences and tell true or falseaccording to the passage to see how much they’ve understood.
1. You needn’t select the feed rate in the continuous feed by manual operation.
（key：1. The X axis 2. jog3.knob4.increases）
III.将下面的短语译成英语。
1返回参考点_______________________
2手动操作_______________________
3连续进给_______________________
4坐标轴移动键_______________________
3. Jog feed Rate
Use the“Feed Rate”knob to adjust the feed rate.
教
学
后
记
教学内容
教学过程
Step 1 Leading-in and Warming-up
1. Revision
2. Warming up for the new class
简述本节内容、要点，导出教学目标。本节课学习手动操作的内容。
2. If you press the spindle stop key, the spindle stops.
3. When you press the “jog” key, the system will be in the manual handle operation mode.
4. Press this key , and the spindle will rotate counter clockwise.
2.Ask students to answer teacher’s questions according to thetext ofLesson3.
▲1.Askstudents to work in groups of four to read new words and phrases.
2. Ask the students to read the words after the teacher.
2. When you press the jog key, the NC system will switch into _______ mode.
3.When you want to adjust feed rate, you rotate the feed rate ______.
4.If you rotate the feed rate knob clockwise, the rate _______.
1返回参考点manual operation
2手动操作return to the reference point
3连续进给the keysforaxismovement
4坐标轴移动键continuous feed
5增加decrease
6减小increase
4. Reading comprehension
▲The teacher picks out the important sentences, and ask the students to practise speaking loudly, clearly and fast.Then choose four students to have a competition,praise the best student and encourage the others.
▲Ask the students to read the text quickly and answer the question:
What does the text introduce?
( It introduces how to make the machine return to the reference point manually,manualcontinuous feed and jog feed. )
1. Manual reference point return
Use the“Reference point”key and the arrow keys.
2. Manual continuous feed
Use the“Jog”key , the“Feed Rate”knob and the arrow keys.
Step II Vocabulary study
1. arrown.箭,箭头记号
2. corresponding adj.相应的
3. adjustvt.调整,调节
4. continuousa.连续的
5. knobn.旋钮
6. selectv.选择
7. increasev.增加
8. decreasev.减小
3.according to the directions needed根据需要移动的方向。needed是过去分词，作后置定语。
4. The rate increasesif you rotate“FeedRate”knobclockwise.如果顺时针旋转该旋钮，修调倍率就增加。
表示旋钮转动的方向一般用clockwise，counterclockwise而不用right, left。因为旋钮一般是圆形的，从上面看向右旋转时，从下面看则是向左旋转。
Money can buy blood,but not life.
Money can buy medicine,but not health.
Money can buy insurance（保险）,but not safety.
You see, money is not everything.
▲1.Askthree goodstudents to recite theusefulsentencesinLesson 3and the others repeatthem.
教学
重点
掌握文章中涉及的专业词汇以及重点句型的分析。
教学
难点
三种手动操作的英语表达。
教法
1.Task-based teaching and learning
2.Cooperative learning
课时
1课时大课( 90分)
教具
a projector
板
书
设
计
Lesson 4 Manual Operation ( I )
Money can buy a bed,but not sleep.
Money can buy a clock,but not time.
Money can buy a book,but not knowledge.
Money can buy food,but not an appetite.
Money can buy position,but not respect.
3continuous feed4. the keysforaxismovement
5.direction6.increase
7.decrease8.knob
Step VIHomework
Step VII Self-checklist
Step VIIIA Poem
Money can buy a house,but not a home.
课题
Lesson 4 Manual Operation ( I ) (U3-L4)
授课
日期
年月日第课时
教学
目标
知识目标：掌握关于本课的基本词汇以及课文内容。
能力目标：提高学生的阅读理解能力。
素质目标：培养学生自主解决问题和相互合作的能力。
教材
分析
本节课学习如何使用手动方式使机床返回参考点、手动连续进给和点动进给。课文内容较简单，操作步骤也不难，学生容易掌握。
nobk------knobctsele-----select
reaseinc------increasereasedec------decrease
II.根据课文在每个句子的空白处填入适当的词
1)Whenyou press the down arrow key, ______ returns to the reference point.
5方向_______________________
6增加_______________________
7减小_______________________
8旋纽_______________________
1.return to the reference point2.manual operation
5.The teachermakes comments.
6. The teacher explains some words.
▲1. The students have been asked to preview the key words before the class.
2. Check how well they have previewed.