初中英语试讲稿英文版

2024-05-01

初中英语试讲稿英文版(通用6篇)

篇1:初中英语试讲稿英文版

We have discussed how to simplify a logic function using logic algebra.This method relies on the skill of the individual in applying the appropriate rules.Sometimes it is hard to be sure whether the logical function is already simplest form or not.Now we will introduce a new method, which is graphical, known as the Karnaugh map.It’s a tool for performing the simplification of logic function.2 first, we must know what is the K-map, and how to design it!Usually, the K-map is made up of 3 parts, and the 3 parts are variables, cells and binary numbers.Ok, we can get 2 k-maps, you should note each map includes 3 parts.Please remember the 3 parts, when you design k-maps, each of the parts is essential.we note the first map has 2 variables, it has 4cells, and the second map has 3 variables, it has 8 cells.So in an n-variable k-map, there are 2 to power n cells.4 then please observe the binary numbers on the upper and left side of the k-map.What do you discover from the changed values? Take the numbers on the upper side as example, look at the first map, the numbers is changed from 0 to 1 between adjacent cells, only one-bit is changed, of course, the number just has one-bit.On the second map, each number has 2 bits, the number is changed from 00 to 01, from 01 to 11, from 11 to 10, between the adjacent cells, there is only one-bit in the number changed.If we change the position of the 2 binary numbers, do you think this sequence is right? No!It’s not right, because the number is changed from 01 to 10, two bits are changed.So you should know there is only a single-variable value changed between adjacent cells.This is one of the K-map’s features.5 we look at other features.On the fist map, Cell 1’s adjacent cells are cell 2 and 3, it’s easy to understand.What are the cell 4’s adjacent cells? They are also cell 2 and 3.But on the second map, cell 3’s adjacent cells are cell 1, 4 and 7.This is easy to understand.Now please give the cell 1’s adjacent cells!You may list cell 2 and 3, it’s right, but it’s not all right, because you ignore the cell 5.Do you know what that is on the left side of cell 1? In fact, cell 5 is on the left side of cell 1, of course, cell 6 is on the left side of cell 2.In this case, adjacent cell include the cells located in the symmetric place.I hope everyone should note this.6 this is a 4-variable K-map.Please give the cell 11’s adjacent cells!Now you should know except cell 12 and 15, cell 3 and 9 are cell 11’s adjacent cells.Cell 3 is on the right side of the cell 11, and cell 9 is on the lower side.7 Ok, let’s summarize the feature of K-map.Fist, if a k-map has n variables, it must possess 2 to power n cells.Second, when you design a k-map, please note how to change the binary number on the upper and left side, there is only a single-variable value changed between adjacent cells.Third, it’s easy to find a cell’s adjacent cells, but I must emphasize that you don’t ignore these cells located in the symmetric place.Please care about these, it will easy for you to make use of K-map.8 after discussing K-map, let’s learn how to represent a truth table on k-map.Here is an example.This is a truth table of a 3-variable function, the knowledge about the truth table has been discussed earlier.The key step is to design a K-map, we know the function has 3 variables, the k-map also has 3-varibales, according to the features of k-map, there are 2 to power 3 cells in the K-map, they are 8 cells.Then the binary numbers will be written, you seem to note there is only single-variable value changed between adjacent cells, we have drawn a K-map.The second step is to mapping the logic function.It is an easy work for you to enter the value of the output variable Y in each cell.On the K-map, cell 0 corresponds to row 0, because the variables’ value are same, a is equal to 0, b is equal to 0, c is equal to 0, so we should enter 0 in cell 0.Cell 1 corresponds to row 1, a is equal to 0, b is equal to 0, c is equal to 0, enter 1 in cell 1.so we can draw a conclusion if all variables’ value on the map is same as those in the table, enter output value in corresponding cell.Ok, fig.5.3 gives the complete K-map of the truth table.Look at this example 2, this equation is in SOP form, first we should convert it into standard SOP, and then it can be represented on K-map.Observe this equation, this term and this term are not minterm.Although minterm and SOP form are discussed early, I think it’s necessary to review this knowledge.Minterm is also called standard product form, we look at example 2, the 3 terms are product form.This and this terms are only product form, they are not standard product form.But this term is standard product form.What’s minterm? A function has n variables, if the product term contains n variables, each variable may be in complemented form or in uncomplemented form.The product term is called a minterm or standard product form.11 of course, it’s easy to understand that if a function has n variables, there must be 2 to power n minterms.There are 3 variables A,B,C, so we can write 8 minterms.12 if the logical function is represented as a sum of minterms only, the function is said to be in standard sum of products form.This expression is not in standard SOP form, because this and this term are not minterms, and this expression is in standard SOP form.13 In fact, the logical function can be converted into standard SOP form.We know the C plus the complement of c equal 1, any term multiply 1 equal itself.So if the fist term multiplies this expression, it can be converted into two minterms, the two sides of the equal mark are equivalent.The second term can be converted into two minterms by the same way.We can get a standard SOP form.14 the represent the SOP form on K-map.15 According to minterm’s features, logical 1 corresponds to the original variable, logical 0 corresponds to complement of variable.When a equal 0, b equal 0, c equal 0, we can get this minterm, this term corresponds to this cell.In fact, the K-Map includes all minterms.16 the first term corresponds to this cell, so we enter 1 in this cell.the second term corresponds to this cell, so we enter 1 in this cell.the third term corresponds to this cell, so we enter 1 in this cell.the forth term corresponds to this cell, so we enter 1 in this cell.the fifth term corresponds to this cell, so we enter 1 in this cell.17 Ok.The equation in standard SOP form is represented on K-Map.18 this section is very important.It is well-known that K-map is perhaps the most extensively used tool for simplification of logical function.Ok, let’s look at how to simplify logical function using K-map.We will illustrate every step through a example so that you can understand this method easily.Let’s look at the fist step, Mark those cells with a 1 that correspond to the terms in expression.Here is an equation in standard SOP form.After designing a k K-map, enter 1s in corresponding cells.So we get fig 5.6.19 Form the 1s into the largest valid group.Some conditions limit the largest group.The group must be a rectangle, and must contain 2 to power i cells, i is equal 0, 1, 2, n.n is the number of variables.When you face this K-map, how to make valid group, on the left side, there are 3 ones, on the right side, there are 2 ones.The 3 ones couldn’t form a group, because it is not rectangle, and it has 3 cells, normally, the group should contain 1, 2, 3, or 8 cells.But these 2 ones can form a group, these and these also can form a group.u should remember this cell and this cell are adjacent, this cell is on the left side of this cell, this cell is in the right side of this cell, the two cells are the same.So these 4 cells should form a group, and it also satisfy the demand of form the largest group.ok we have formed two groups Step 3 each 1 on the map must be included in at least one group.The ones already in a group can be included in another group as long as the overlapping groups include noncommon ones.Please note this cell, it isn’t only in the group, but also in this group, it belongs to the two groups, these 2 groups are permitted.Because the 2 overlapping groups include noncommon ones.Except this cell , this group has this cell, this group has this, this and this cells.21 Step 4 will give us a rule about how to produce terms.Identify adjacent ones in a group, then see the values of the variable associated with these cells.If the variables will be different and they gets eliminated.Other variables will appear in ANDed form in the term.This map exist 2 groups.We observe this group first, the value of variable C is not changed, it is equal to 1.the value of A is also not changed, it’s equal to 0, but look at variable B, the value is changed from 0 to 1 between adjacent cells, variable B should be eliminated.The other two Variables A, and C will appear in ANDed form in the term, I have to emphasize that this term is written by the method of producing minterm.0 corresponds to complemented variable, 1corresponds to uncomplemented variable.So we get this term.Then we observe this group include 4 cells, the value of variable B is not changed, the others will be eliminated.We get the complemented B.two groups get 2 terms.22 step5 these terms are ORed to get the simplified equation in SOP form.This equation is previous, and this is simplified equation, in fact, it’s a simplest expression, these two equations are equivalent.Now, we have simplified a logical expression using K-map, do you find it is a simple and efficient method? Remember these 5 steps, they are useful.23 After this chapter, we should appreciate the two points.First, you must know how to design a K-map;it’s a basal and important knowledge.When you design a K-map, you should pay more attention to these details.Second, simplification a logical expression using K-map method, we know this method is simplest and most commonly used method, it’s an essential knowledge in this chapter and easy for you to be operated, I will give you some homework to practice yourselves, they are 7, 12, 16, and 18 on the page 188 and 189 respectively.Please treat them seriously, you will get promoted.

篇2:初中英语试讲稿英文版

Treasure of Life生命的财富

I am a rich boy, because I have a lot of treasure.Friends are my treasures.Whenever I am sad and down, I know they would hold my hands and warm my heart.They show me how amazing the friendship is.Families are also my treasures.Whether time find us far apart or it keeps us close together, they are always standing by my side.They tell me how wonderful to be loved by people you love.Experience is my treasure.Whatever good or bad situation I have to face, it would show me the right way.It helps me to know more about life.I believe I will be richer in the future., because the way of life is just like a journey of finding treasure.You never know when and where you can find them.You just keep going and they will be found in some time at some place.I will cherish what I have had and keep finding with my curiosity and passion.I fall in love with reading, because I can get the treasure ofknowledge.I take part in activities, because I can find the treasure of cooperation.I enjoy music, because I can find out the treasure of beauty.Life is precious ,isn’t it? How can we get so many beautiful and valuable things without life?

Dear friends, Let’s feel the world with heart, carry the sun inside you, and reach out for the dreams that guide you where you want to go.You will have what it takes to make our path of success.That is the treasure of life!?

篇3:初中英语试讲稿英文版

关键词:初中英语教学,故事法教学,具体运用

在传统的英语教学中,学生都是机械性的背单词,学句型,掌握语法知识,并没有重视到学生的情感体验,导致学生的参与兴趣不高。而故事是每个学生都爱听的,它能够很好地调动学生的兴趣,吸引他们的注意力。而如果把它运用到英语教学中,就能够激发学生学习英语的兴趣,并且还能消除英语教学中的枯燥感,从而促进学生快乐高效学习。

一、在英语课堂教学中运用故事教学法的必要性

我国对于初中英语教学仍是采用传统的应试教学方式,英语教师上课都是以抓学生词汇量,教学生语法,练习对话,背诵课文等方式来进行教学的。在这种填鸭式的教学下,学生对于初中英语的学习提不起丝毫兴趣,有些成绩差一点的更是直接就想放弃对于英语的学习了。因此,要想改变这种现状,最关键的就是要改变现在初中英语教学的这种模式。

故事教学法,通过把学生感兴趣的故事与教学相结合,不仅能够激发学生的学习兴趣,更是能够把枯燥的英语语法和词汇变得有趣,从而使整个英语教学课堂都处在轻松、愉悦的氛围中,让学生在快乐中学习,将有效的提高初中英语课堂的教学效率。

二、故事教学法在初中英语课堂教学中的具体运用

1.在词汇学习中运用故事教学法。学习任何一种语言,都首先要学习它的音标,然后是学习词汇、积累词汇,最后学习语法。而要想很好的掌握一门语言,词汇的学习是很重要的,在初中英语的教学中,教师也是很重视英语词汇的教学的。但是教师往往采用死记硬背的方式教导学生学习,往往使得学生厌恶词汇的学习,从而对于英语的学习都失去了兴趣。

而如果,将故事教学法运用到词汇教学中就能够很好地改变这一现状,把死记硬背的机械记忆转变为故事性的理解记忆,从而激发学生的学习兴趣。因此,英语教师可以在课堂上教授学生学习英语词汇时,可以根据所教学生的特点,把词汇编成学生感兴趣的故事来进行教学,例如:单词Atlas,它的意思是地图集。而Atlas其实是希腊神话中的大力神,因支持巨人族首领泰坦反对主神宙斯,被罚作苦役,用头和肩将天撑起,到了现代人们往往把Atlas想象成一个身背地球的巨人。这样一解释,单词Atlas的意思就生动、形象了许多了,方便学生记忆,也能引起学生的兴趣。

2.在语法学习中运用故事教学法。在以往传统的初中英语语法教学中,教师都是只注重语法知识的传授,而忽略了语法技巧的训练;只重视语法的书面练习,而忽视了语法的口头练习;只注重讲语法的分析,而忽略了语法的使用方法。因此,针对这些问题,教师要想加强学生听说读写的能力,就要把语法知识融入到有趣的故事中。在提高了学生的学习兴趣的同时,让学生在听故事与讲故事的过程中充分理解英语语法知识的应用,并且提升自己的听说读写能力。

例如:在学习可数名词复数特殊变化规律时,教师可以把规律编成一首朗朗上口,又具有故事趣味性的小故事歌。中(Chinese)日(Japanese)好友来聚会,绵羊(sheep)、鹿(deer)、鱼(fish)把家回。男士(man)、女士(woman)a变e;牙(tooth)、脚(foot)双o变双e;孩子们(children)想去天安门,原形后面r、e、n;老鼠(mouse)本来爱大米,mice,ice和rice.以这样的方式,不仅很好的提高了学生的学习兴趣,也成功的让他们记住了这一语法知识点。

3.在阅读学习中运用故事教学法。在初中英语的学习中,初中英语科本都是一单元课文的形式编撰的,单词和语法知识都暗含在课文中,因此对于课文阅读的教学是至关重要的。其实,初中英语课文本身还是比较有意思的,但是在实践课堂上教师往往只注重于单词与语法的传授,而忽略了课文本身,因此造成课堂的枯燥无味。所以如果教师可以换一个方式,先用中文向学生介绍这篇课文讲了一个什么故事,或者就课文的主题让学生自己用英文讲一讲,引起学生的兴趣之后,在进行词汇和语法的教学这样就会好很多。

比如:在学习初中九年级Unit1 How can we become good learners?中一课《How I Learned to Learn English》时,教师可以先用中文向学生概述一下这个故事。这一课所讲的故事是一个叫魏芬的小女孩一开始也不喜欢学习英语,但后来在看了《玩具总动员》这部英语电影后,因为对电影的兴趣而爱上了学英语。在教师给学生讲了课文的内容后,这个故事其实很容易让学生产生共鸣,从而激发学生学习这篇文章的兴趣,教师在循序渐进的进行引导,从而顺利完成课堂教学。

三、结束语

在初中英语课堂教学中运用故事教学法,对于提高初中学生的学习兴趣,优化初中英语课堂教学的教学效果,都是很有帮助的。因此,初中英语教师要多多研究,善于发现在课堂教学中运用故事教学法的有效方法,只有这样才能积极调动学生学习英语的主动性,从而最终达到提高学生英语水平的目的,为我国的英语教育事业输送人才。

参考文献

[1]戈正根.“故事教学法”在初中英语课堂教学中的运用[J].内蒙古师范大学学报(教育科学版),2009,12:96-98+123.

[2]谢丹萍.“故事教学法”在初中英语课堂教学中的运用[J].中学课程辅导(教师通讯),2015,14:53.

篇4:探试初中英语的教学方法

一、寓教于乐

(1)要严格按照《教学六认真》来完成教学任务,专研教材,精心备课。设计教学方案、教学目标明确、教学重点突出、难度适当。(2)在教学过程中,既要备教材、又要备学生,了解每个学生的能力,针对不同的学生,提出难易适中的问题,使他们都有成就感。通过使用语言来学习语言,充分发挥学生的主体作用,调动他们学习英语的主动性和积极性。(3)教师要注意加强师生互动,通过运用不同的教学方法。借助各种教学工具,充分、合理地运用多媒体进行教学,培养学生的思维,调动学生的学习积极性。(4)新教材最大的特点是趣味性浓,贴近日常生活,富有时代气息,体现时代精神。学生一旦有了学习英语的兴趣,他们对学英语就会变得积极、主动,并养成了良好的学习英语的习惯。(5)开展多种形式的课外活动,如用‘英语讲故事’,进行‘对话表演’,进行‘单词大比拼’,‘唱英语歌’等,创造了良好的语言环境,这样既巩固了教学内容,又调动了学生学习英语的积极性。

总之,新教材内容还渗透了思想教育,文明礼貌,助人为乐等思想教育,这有助于提高学生的思想道德和文化素质,使学生在老师所营造的教学氛围中,愉快地接受新知识,潜移默化地提高了学生的自身道德素养。

二、统筹安排听说读写

1听

通过听的渠道获得语言信息及语言感受是外语学习中一项最主要的基本功。听写是一种积极的、综合性的语言教学形式,有助于学生学习,巩固所学的语音和书写知识,同时还锻炼了学生的注意力和瞬间记忆力,检测教学效果。说的能力很大程度上有赖于听的能力。

听的能力要进行系统的训练。大致有以下几种方式进行:(1)课堂用语;教师在课堂上尽量使用英语教学,这样可以使学生增加接触英语的机会。(2)教师在介绍和操练新的语言点时。要让学生多听并注意发音。(3)要让学生进行重音、连读、不完全爆破、语调及辨别不同发音的训练,使学生能听懂,激发学生学习英语的兴趣。(4)听写、拼写练习时,要从简单人手,使学生有成就感,听写是训练听力,拼写是对写作技能的一种很好的练习。听写既可用于教学,也可用于测试。

总之,听写作为教学手段是掌握英语的必由之路。在具体的教学活动中必须对听的技能进行专门训练。教师应让学生多听录音磁带。培养学生听英语的基本技能。养成用英语思维的好习惯。

2说

说的能力是属于口语,要提高学生的口语能力。应加强说的训练,我对学生口语训练的基本方法是:

(1)使用录音磁带,教材中漫画有录音,课文有录音,生词也有录音磁带,使用暂停键,随放随停,一放再放,反复播放,让学生借助录音磁带跟着模仿,重点是听说训练,培养正确的读音、语调和良好的语感。练习时要有一定的速度要求,先慢后快,要求吐字清晰,语调正确,帮助学生正确地读出单词,并学会与它们有关的拼读规则。(2)口语训练要有计划和安排。每节课安排一个学生到讲台前自我介绍、或介绍班级、学校、家庭生活中人或事。还有教材中的情景对话。如购物,打电话,看病,谈论天气等。上课时,要让学生单纯模仿,机械背诵,在模仿和背诵的基础上有所创新,培养学生在真实情景中的口语表达能力。教师还可以利用复习课创设情景,让学生自由地创编对话。长期这样训练有素,学生既掌握了新知识,又复习了旧知识。循环巩固,促使学生养成了“睹物思词”的习惯,从而提高了学生英语口语表达能力。

3读

阅读教学是通过学生课本和练习册里的练习进行的,是与其它技能训练紧密结合的,读能帮助理解、巩固和记忆所学的材料。学生既要学会朗读,又要学会默读,教师应主张学生多朗读,朗读时要注意语音,语调,培养语感,加强记忆。教师还应注意培养学生的阅读技巧:如根据上下文推断单词或句子的意思,略读和查读等,选择合适的课外读物,布置适量的课外阅读作业,有针对性地提出引导性的问题,提高学生的阅读兴趣和目的性。

4写

写的技能主要是在练习册里培养:它紧密集合并加强口语和阅读训练。首先加强属性技能训练,进行抄写。加强学生书写技能的训练。老师还要指导写作训练,鼓励学生使用自己学过的语言描述自己生活中的人或事;例如让学生用英语写日记、写旅游景点,写自己的朋友、家人、家乡的变化、学校的概貌、班级的布置等。通过学生对各种话题展开丰富的词汇想象,把所学的英语知识及时运用起来,使学生向“规范化、语法化、逻辑化”的良性循环方向发展:进行听、说、读、写的全面训练、交替进行、有利地提高了学生的英语素质。

三、合理使用教材的配套用书

在日常教学中。我充分利用与教材配套的同步听力磁带,融听,读,写为一体。教师除了用好教材以外,还要用好练习册、听力训练和阅读训练等课外用书。练习册的运用是对所学知识的巩固,好好利用练习册上的课时练,以达到复习和巩固课文的知识点和语言点。老师还可以适当地布置一些课外阅读,实时、适度地布置些家庭作业,真正达到学生理解和记忆。

篇5:高中英语试讲稿

Unit 2 Heroes Lesson 1 Modern Heroes Lead in Good morning, everyone!Do you like watching movies? Do you know Jet Lee? Do you know one of his famous movie called HERO? Yes, I think almost everyone has watched this classic movie, so what does “hero” mean? Who can tell me? Put up your hands, that girl in red, Okay, thank you, sit down please.Who are the heroes in your heart? Do you know Yang Liwei, our national hero? Please discuss in pairs with your partner in 3 minutes and them give me your answer.Okay, now time is up, any volunteers? Please give me your answer.Okay, en, Yang Liwei is China’s first astronaut.He was a pilot in the army.He was carried by Shenzhou V, thanks for your answer.Sit down please.What else? That tall boy, He was chosen form 1,500 other army pilots.Your answer is excellent too, please have a seat.Shenzhou V is the China’s first manned spaceship.It lifted off at 9 a.m.on Wednesday, October 15th, 2003 in Jiuquan, Gansu province.It was carrying Yang Liwei.It was launched very successfully and landed in Inner Mongolia safely.Yang Liwei is the China’s first astronaut.He was chosen form 1,500 other army pilots and started training for his space flight in 1998.During the 21-hour space flight, he circled the earth 14 times.When the spaceship was doing its seventh circle, Yang Liwei showed the flags of China and the United Nations, expressing the wishes of the Chinese people to explore and use space peacefully.Presentation Okay, now open your books and turn to page 100 and 101.let’s read two passages about Shenzhou V and Yang Liwei.I will give you a task, that is, read the passages quickly, and get the general idea of them.Pay more attention to the new words, please try to guess the meaning according to the context, and put it into the passage to get a deeper understanding of them.Now, let’s get started.Okay, now there are six heading of the whole text, a.astronaut lands safely, b.welcome home, c.international good wished, d.an exciting lift-off, e.introduction, f.during the flight.Please scan each paragraph quickly and get the main idea of each part.(10 minutes later)Time is up, please answer it one by one, this row, please.Okay, that’s all, do you agree? Any different answers? Please discuss in groups and then let’s correct them together.Okay, now you have a certain understanding of the text, next please read it again carefully to gain a deeper understanding.There are five questions to help you along the reading.1.How did Yang Liwei feel during the flight? How did he feel afterwards? 2.What did Yang Liwei do during the Shenzhou V’s seventh circle of the earth? 3.How many circles did the spaceship complete while Yang Liwei was sleeping? 4.What were helicopters doing as Yang Liwei returned to the earth’s atmosphere?

5.What did Yang Liwei do when he came out of the spaceship?

First please read it by yourself and try to find out the answer to those questions, and then work in pairs to cooperate with your partner.Practice Let’s do an interview, I need several volunteers to come to the blackboard, one of you acts as our hero Yang Liwei, the others act as reporters from parts of China.The reporters could design questions freely and do an interview with “Yang Lilwei”.Summary Please work in groups to make a summary of what we’ve learned today.Then I need a volunteer to come to the blackboard to be a little teacher, and help us make a summary.Homework You are required to retell the story of Yang Liwel, and speak out your sense of national pride.

篇6:英语元音音标试讲稿

长元音/ɑ:/、/ɔ:/、/ɜ:/、/i:/、/u:/ 在小学时,我们学过了拼音aoeiu,那么长元音的发音是/ɑ:/、/ɔ:/、/ɜ:/、/i:/、/u:/,听这个名字我们就知道,发音的时候,声音持续时间比较长,注意我们单元音发音的特点是:在发音的过程中,唇形要保持不变,我们再来一遍。短元音/ʌ/、/ɒ/、/ə/、/i/、/u/

/e/ /æ/

首先长元音分别是/ɑ:/、/ɔ:/、/ɜ:/、/i:/、/u:/,长元音后面都是加两个点,而短元音的发音,我们来对比一下,/ɑ://ʌ/,注意,嘴张大;/ɔ://ɒ/,这个长元音的/ɔ:/圆唇,嘴小,/ɒ/注意这个要嘴巴张大;/ɜ://ə/;/i://i/;/u://u/。顾名思义,长元音读得稍微长,而短元音读得非常短促,注意我们短元音发音的特点:在发音的过程中,唇形要保持不变,就是说,就是嘴巴变大或者变小这是不对的,要保持不变。

短元音除了这五个之外,/ʌ/、/ɒ/、/ə/、/i/、/u/,还有这两个,/e/ /æ/,嘴半张,张到大概能够含下一根手指,嘴巴扁平/e/。/æ/这个嘴巴要张到最大、最宽,张得夸张一点,大概可以含下两根手指,好我们来区分一下,/e/ /æ/ 双元音/aɪ/、/eɪ/、/ɪə/、/ɔɪ/

/əʊ/、/ʊə/、/eə/、/aʊ/ 有单元音,也有双元音。双元音,它是由两个单元音组成。看这个[ai],它是由前一个/a/,和后一个/i/组成,那么特点是:前长后短,前面一个/a/读得比较长,后面一个读得短/i/,/a/跟/i/连在一起读/ai/;前重后轻,前面一个/a/读得重,后面一个读得轻/i/,/a/跟/i/连在一起读/ai/。那么它的发音过程:是从前一个元音滑到第二个元音的一个过程,从/a/到/i/这个过程你要读出来,不能纯粹读一个/a/,也不能纯粹读一个/i/。那么唇形跟单元音不一样,双元音它是由两个音组成的,所以唇形必须根据发音的特点有所改变,大变小、小变大、圆变宽、宽变圆。我们来学习这几个音标,/aɪ/,比如说“我爱中国”,这个“爱”,/aɪ/ 是由/ʌ/和/i/组成;这个读/eɪ/;这个/i/跟/ə/组成,前长后短,前重后轻,/ɪə/;这个/ɒ/跟/i/,/ɔɪ/;再来一遍/aɪ/、/eɪ/、/ɪə/、/ɔɪ/

在上面四个双元音的基础上,/aɪ/、/eɪ/、/ɪə/、/ɔɪ/,我们再来学习下面四个双元音,/əʊ/、/ʊə/、/eə/、/aʊ/,再次重申以下,双元音的特点它是有两个单元音组成,比如说这个/əʊ/,它是由/ə/和/u/组成,那么是前面一个读得比较长/ ə /,/u/比较短促,前面一个/ə/读得比较重,后面/u/读得比较轻,以此类推。但是我们在真正发音过程中,我们要注意,它是从前面一个音,比如/ ə /,滑到后面一个音/u/这个音,我们读得是这个过程,不要读成/ə/和/u/,分开来,必须是/əʊ/,从/ə/到/u/这么一个过程,这就是双元音的发音过程。那么唇形就必须按照发音的特点变化,变大或者变小。好我们来看这四个双圆音/əʊ/ ;这个是/u/跟/ə/,/ʊə/; /e/跟/ə/,/eə/;这个是/a/跟/u/,嘴巴先张大,变小,变圆唇,/aʊ/。好在跟我读一遍 这里几个比较容易混淆的音标

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