英语演讲ppt文本

第一篇：英语演讲ppt文本

Learn to sleep

1.基因中什么决定你的睡眠类型

People always tell me that the most accomplished people in the world get up super early, working out and having meetings.It seems right.But sometimes it’s really hard to wake up.Why? There might just be part of your genes.Geneties determine how fast or slow our internal clock runs.And as a result, how closely it and our body’s functions align with the 24-hour day.Harvard Medical School says, if your clock runs fast ,you’re more likeiy to be a morning person, and if runs slow you’re a night person.In the 2012 study, scientists found a single nucleotide on the “Period 1”gene which helps control the daily behavioral clock and correlates with wake-sleep behavior.The researches found that the nucleotide base adenine is linked to someone being a morning person, while it’s base pair guanine is linked to being a night owl.So,people with AA genotype, on average, wake up earlier than people with the GG genotype.But you can have genes that tell your body all sorts of things if you want to be a day man or fighter of the night man.We called this thing a circadian rhythm.It’s a roughly 24-hour cycle controlled by the brain that tells us when to wake up, to go to sleep, and other biological processes in between.2.Does sleeping early and getting up early really help improve sleep quality? We know that the brain emits brain waves during activity.By monitoring your brain's brainwaves scientists have discovered five stages of sleep: Stage 1 Sleep In the first stage, people are conscious.For example, when you listen to boring lectures, lectures, and meetings, you fall asleep, daydream, and even fall asleep on the spot.At this point, you get to the first stage of sleep, in which our bodies begin to relax, and our breathing and heart rate begin to drop slightly.Stage 2 Sleep During the second Stage of Sleep, some scientists believe that in a sense, the brain gradually shuts down its waking activity.At this stage, it is easy to wake up.In fact, in many studies of sleep, most people who are woken up during the second phase of sleep still think they're not asleep.Most of the classes and meetings that go to sleep are basically at this stage.Deep-sleep(第三四阶段)In the third and fourth stages of sleep, we have the lowest frequency of brain waves.During these two stages, we really fall asleep, so these stages are also known as deepsleep.Our blood pressure, breathing and heart rate dropped to the lowest point of the day after we entered the deep sleep phase.Our blood vessels begin to expand, and the blood that is stored in our organs goes into our muscles and nourishes and repairs them.In the book did not detail three phase and four stages of the different, I guess, is probably the two stages of different frequency, but it doesn't matter, we just need to know, this is sleeping.The fifth stage of sleep(REM sleep)is the most fascinating phase of the whole sleep process, and scientists have yet to figure out what the purpose of this phase is.Rapid Eye Movement(REM睡眠阶段)The fifth stage has a technical term, Rapid Eye Movement, or REM sleep stage.In the 1950 s, a man named Nathan klein terman(Nathaniel Kleitman)scientists found that when human beings in this sleep stage, their eyes at very fast speed in each direction.He also found that when people woke up from this stage, 95 percent of people said they were dreaming before they woke up.So REM sleep is also called dream sleep.It is believed that we are generally in REM sleep.It is interesting to note that at this stage, our brain wave frequency and awake, when there is no difference between the brain and the same active during the day, so that sometimes we think dreams are so real, just don't want to wake up.To understand the regularity of these five cycles during sleep, I also need to understand that the sleep stages mentioned earlier in the sleep cycle are not only performed once during a full sleep.They occur repeatedly during sleep, which we call sleep cycles.In a sleep cycle, we repeat many times from the first to the fifth.The whole cycle is very complicated, probably something like this : The sleep period mentioned earlier in the sleep cycle is not only performed once during a full sleep.They occur repeatedly during sleep, which we call sleep cycles.In a sleep cycle, we repeat many times from the first to the fifth.The whole cycle is very complicated, probably something like that.In the sleep cycle, each sleep stage alternates, such as: 1, 2, 3, 4, 3, 2,REM,2, 3, 4, 3, 2,REM,2, 3, 4, 3, 2,REM,2, 3, 4, 3, 2,REM...It takes an average of 60 to 100 minutes per cycle, but everyone is different.There are also some details: the first sleep stage is the longest, and later, the sleep phase will be shorter and shorter, and eventually fade away.The first REM sleep phase is the shortest, and the later is longer.So, the more people wake up in the middle of the night.Compared with the quality of sleep, the proportion of several stages is approximately: 5% in the first stage, 40-50% in the second stage, 12% in the third and fourth stages, and 25% in the REM stage.The importance of sleep stages proves that if we are sleep-deprived, we can feel extreme sleepiness, nausea, headaches, muscle aches, and inability to concentrate during the day.When we don't sleep regularly, our bodies pay for sleep at the expense of other sleep stages.Sleep is the first stage of sleep that our bodies need to meet as much as possible, so we rarely lack this stage of sleep.Our immune system is activated during sleep and fights disease.That's why we're so sleepy when we're sick, and doctors suggest we stay in bed as much as possible when we're sick.The importance of REM sleep stage although scientists are not clearly know what is the purpose of this phase, but research suggests that if we lack of REM sleep during the day we will meet some difficulties, such as the inability to concentrate, sometimes some sleepy.But as the previous article said, our bodies first sleep when they're sleep-deprived, so lack of REM sleep doesn't seem like a big deal.But scientists have come up with a theory that we will absorb what we learned during the day during REM sleep.For example, babies spend a considerable amount of time sleeping, and 50 percent of their time is spent in REM sleep.So my guess is that lack of sleep leads to memory loss, and it may be that there is not enough time for REM sleep to digest the content of the day and lose a lot of information.To sum up, high quality sleep is actually easy to sleep, and stay at this stage for enough time.睡眠周期早期提到的睡眠周期，不仅是在充分睡眠期间进行一次。它们在睡眠中反复出现，我们称之为睡眠周期。在睡眠周期中，我们从第一个到第五个重复多次。整个循环很复杂，大概是这样。

在睡眠周期中，每个睡眠阶段交替，如:1、2、3、4、3、2、REM、2、3、4、3、2、REM、2、3、4、3、2、REM、2、3、4、3、2、REM……每个周期平均需要60到100分钟，但每个人都不一样。

还有一些细节:第一个睡眠阶段是最长的，之后，睡眠阶段会越来越短，最终会逐渐消失。第一个快速眼动睡眠阶段是最短的，后期则更长。所以，半夜醒来的人越多。

与睡眠质量相比，几个阶段的比例约为:第一阶段为5%，第二阶段为40%-50%，第三阶段和第四阶段为12%，REM阶段为25%。

睡眠阶段的重要性证明，如果我们睡眠不足，我们就会感到极度的困倦、恶心、头痛、肌肉疼痛，以及白天无法集中注意力。当我们不规律地睡觉时，我们的身体会以牺牲其他睡眠阶段为代价来支付睡眠。睡眠是第一阶段的睡眠，我们的身体需要尽可能多的满足，所以我们很少缺乏睡眠的这个阶段。我们的免疫系统在睡眠和对抗疾病时被激活。这就是为什么我们在生病的时候会很困的原因，医生建议我们在生病的时候尽可能多的躺在床上。

快速眼动睡眠阶段的重要性虽然科学家还不清楚这一阶段的目的，但研究表明，如果我们在白天缺乏快速眼动睡眠，我们会遇到一些困难，比如无法集中注意力，有时会感到困倦。但正如前一篇文章所述，我们的身体在睡眠不足的情况下才会第一次睡觉，所以缺乏快速眼动睡眠似乎并不是什么大问题。

但是科学家们提出了一个理论，我们将会吸收我们在REM睡眠期间所学到的东西。例如，婴儿会花大量的时间睡觉，50%的时间用于快速眼动睡眠。所以我的猜测是睡眠不足会导致失忆，可能是因为没有足够的时间来进行快速眼动睡眠来消化一天的内容，从而丢失大量的信息。

综上所述，高质量的睡眠实际上很容易入睡，并且在这个阶段停留足够的时间。

第二篇：英语演讲ppt

Good morning everyone!I„m pleasure to be on the stage and bring you a speech!And my topic is we are young.Last week we have learned an article by Bertrand Russell.these is a sentence touched to me.“Most people ,when they are left free to fill their own time according to their choice , are at a loss to think of anything sufficiently pleasant to be worth doing.” I fell into deeply thought because sometimes I will face this situation too.Then I thought why.why I am the most people ? Suddenly , Some words appear in my mind.“ Youth is the season of dreams of flying!” Yes , we are young!Our mind should be filled with dreams and know where is our dream , how to achieve her!But why I am not!Perhaps there is so much temptation in our life that we will be disoriented.But now I know we are young and the dreams of youth are invincible!Imagine this , if we have a dream and know where is her , how to get her.Are we still don‟t know what we should do ? So , do you have think about this problem ? Let me give you a few examples to look at how others treat their dreams.Arnold Schwarzenegger , everyone knows him.he is the one knows what he really wants.When he is a 15 years old boy , he want to be the champion of world bodybuilder.Then , He train himself five hours a day.At 20 years old, he became the youngest ever word bodybuilder champion.Then he wants to be a actor.But everyone told him it‟s impossible.they said: Are you kidding me.Hear your accent, as long as you have the strange accent, you can‟t be an actor.But he is never give up!He also spent five hours a day in actor courses, pronunciation courses ,remove accent course and so on.All the things you can imagine, he have to do.Finally, he did!he get more than $ 30 million paycheck in the film “Terminator III”, the highest in the history of the paycheck.He knows what is him realy want at every stage of his life.Now he is the governor of California.Next he may want to be the President of America.There are a lot of people can also stick to their dreams like Edison , Nobel and so on.They make their life is full of surprises and wonders.So , we are young , we have more time to create more wonders than they.We don‟t have nothing pleasant to be worth doing.Conversely ,there is too mach.So , Let‟s calm down and think about it.What is we realy want and where is our dream ? Then hold on!that‟s all , thank you very much!

第三篇：英语演讲ppt

Good morning everyone!I„m pleasure to be on the stage and bring you a speech!And my topic is we are young.Last week we have learned an article by Bertrand Russell.these is a sentence touched to me.“Most people ,when they are left free to fill their own time according to their choice , are at a loss to think of anything sufficiently pleasant to be worth doing.” I fell into deeply thought because sometimes I will face this situation too.Then I thought why.why I am the most people ? Suddenly , Some words appear in my mind.“ Youth is the season of dreams of flying!” Yes , we are young!Our mind should be filled with dreams and know where is our dream , how to achieve her!But why I am not!Perhaps there is so much temptation in our life that we will be disoriented.But now I know we are young and the dreams of youth are invincible!Imagine this , if we have a dream and know where is her , how to get her.Are we still don‟t know what we should do ? So , do you have think about this problem ? Let me give you a few examples to look at how others treat their dreams.Arnold Schwarzenegger , everyone knows him.he is the one knows what he really wants.When he is a 15 years old boy , he want to be the champion of world bodybuilder.Then , He train himself five hours a day.At 20 years old, he became the youngest ever word bodybuilder champion.Then he wants to be a actor.But everyone told him it‟s impossible.they said: Are you kidding me.Hear your accent, as long as you have the strange accent, you can‟t be an

actor.But he is never give up!He also spent five hours a day in actor courses, pronunciation courses ,remove accent course and so on.All the things you can imagine, he have to do.Finally, he did!he get more than $ 30 million paycheck in the film “Terminator III”, the highest in the history of the paycheck.He knows what is him realy want at every stage of his life.Now he is the governor of California.Next he may want to be the President of America.There are a lot of people can also stick to their dreams like Edison , Nobel and so on.They make their life is full of surprises and wonders.So , we are young , we have more time to create more wonders than they.We don‟t have nothing pleasant to be worth doing.Conversely ,there is too mach.So , Let‟s calm down and think about it.What is we realy want and where is our dream ? Then hold on!that‟s all , thank you very much!

第四篇：希腊神话英语演讲PPT

Heracles

徐林：1.The Greek hero Heracles was son of Zeus and the mortal Alcmena, who is the Queen of Thebes.Being afraid of Hera ,the wife of Zeus,she named the baby Heracles which means “the honor of Hera”.But Hera still caused the hero many troubles.While Heracles was just a baby in the cradle, she sent two snakes which the child killed, one in each hand.The great Prophet Tiresias predicted the future of the hero like this:When the little guy grow up,he would kill many monsters ,which will help him become the great Greek hero.3.When Heracles was still a child, he studied knowledge, music, the skill of fight and the usage of weapons from many heros,including the son of Apollo,Linos,who was killed by Heracles.For this reason,Heracles was punished to graze.When he was only eighteen he killed a lion,the head of which was made to a helmet,and for the rest of his life he would carry its skin.5.One day, Heracles was sitting at a crossroads and he saw two beautiful girls passing, the one was the Evil Godness and the other was the Virtue Godness.The Evil Goddess said to Heracles:“if you choose me to be your girlfriend,I'll lead you to the most comfortable path,wide and straight where he will enjoy life and wealth,because I can provide the right to enjoy everthing for my friend.”

The Virtue Goddess said to Heracles:“I'll lead you to a narrow and difficult path full of sharp stones and thorns, which will be crossed with difficulty, but in the end you would win the love and recognition.”

Hercules eventually followed the path of Virtue that gave him glory and recognition for his good deeds.马畅：There are many stories about Heracles.Thanks to him the gods defeated the giants, since they could only beat them if a mortal would fight with them.As a youth he defeated the enemies of Thebes, and as a reward,he married the princess of Thebes ,Megara, who born three babies for him.But Hera made the hero insane for a while, which made him murder his children.Ready to commit suicide after killing his children, he was told not to do so by the oracle in Delphi and to purify himself by serving the king of Mycenae and to do whatever the king told him.The most famous stories about Heracles are about his twelve labours.which will be introduced by my partner.ma chang.The first labour was to kill the Nemean lion, which he did with his bare hands.This frightened the king so much that he would not let Heracles inside Mycenae walls, the hero had to show his trophy outside the walls.The second labour was to fight the Hydra, an immortal monster with nine heads.If a head was cut off, two new would grow out in its place.Heracles defeated the Hydra with the help of his friend Iolaus.Each time a head would be cut off, Iolaus burnt the neck with fire, and so no new heads could grow out.When all the heads were off they buried the monster under a pile of stones.Heracles dipped his arrows in the Hydra's blood, making them lethal.The third labour was the capture of the the deer of Kyrenia, which had feet of brass and horns of gold, he chased it for a whole year and brought it alive to Eurystheus in Mycenae.The fourth labour was the capture of a terrible wild boar which lived on the mountain Erymanthos in North Arcadia.The fifth labour was to clean king Augeias' stable in Elia on the Peloponnese.The stable was huge and full of dung, and Heracles cleaned it by leading two rivers into it.The sixth labour was to kill the monster birds at Stymphalos(Stymphalia)in North Arcadia, which he did with the help of Athena.舒天泽：The seventh labour was to capture the Cretan bull, which either was the father of the Minotaur or the bull that had taken Europa on its back.Heracles brought it to Mycenae, but let it go, and it wandered off to Attica where Theseus later had to fight it.The eight labour was to capture king Diomedes of Trace's man eating horses.Heracles killed the king and captured the horses, and founded the city Abdera.The ninth labour was to get the girdle of the Amazon queen Hippolyte.He either defeated her or she gave it to him willingly.The tenth labour was to bring back the herd of the giant Eurytion on the island Erytheia.On his way to this western place by Oceanos, he made a passage through the Atlas mountains, setting up the pillars of Heracles-today's Gibraltar.He made it to the island in the cup of the sungod, and killed Eurytion and his dog Orthros.The herd he brought with him back to Greece.The eleventh labour was to bring back the golden apples of the Hesperides.According to one version he killed the dragon that guarded the apples and took them.According to another he went to Atlas, the father of the Hesperides.Heracles took the sky on his shoulders while Atlas went to get the apples, but when he returned he did not want to take over the burden of the sky again.Heracles then told him to hold the sky only for a short moment while he put a pillow on his shoulders, and so tricked Atlas into taking his position again.The twelfth, and final, labour was to bring back the three headed dog Cerberus, which guarded Hades, which he did.Cerberus was son of Typhon and Echidna, who had brothers the two headed Orthrus, the dog of Geryon and the Hydra.After these labours Heracles had made his penance, and he married Deianeira, whose father was Poseidon's son Antaeus.When Heracles killed the centaur Nessus for attacking his wife, the dying centaur told Deianeira something that would cause Heracles`s death like that,“You might save some of my blood and dip a tunic in it.if you ever needed to secure Heracles's love,all you had to do was to make him wear the tunic.”When Heracles later wore it the centaur's blood turned out to be poison, and he could not get it off, slowly poisoning him to death and causing him great pain.Heracles then climbed the funeral pyre and was deified, marrying Hebe on Mt.Olympus,and he became the Hercules.

第五篇：英语演讲PPT和草稿

Name: Niehaibing School: school of marxism Student number:2013221020

Today , my presentation is “care for left--behind children”.First,let’s see some pictures and think about the question:What do you think when you see these pictures ?

Ok ,from the pictures ,we can see that they are living in a lost world and they are eager for knowledge.Do you know how mang children left behind in the rural areas of our country ? There are four choices , 20 million , 40 million , 60 million or 80 million.The true answer is 40 million.According to related statistics, there are more than 60 million left behind children so far.It means that every five children across the country has a rural left--behind children.It’s a big datum.So, they face lots of problems , such as psychological problems , learning environment problems and life issues.First ,let’s see the psychological problems.As we all know , their parents go out to busy city jobs.They grew up living with their grandparents.They are all miss their parents very much.But most of time , they have a feeling of being abandoned.This is a very serious psychological problems.The second problem is learning environment problems.They are eager to learn , but this is the place where left--behind children study with old desks , cracking walls.The learning environment is too bad.The third problem is life issues.Left--behind children are more likely to become depressed.So they need more attention and helps.They are also the flowers of our country.Finally , I want to say they are a large group , we should pay more attention to them.That’s all.Thank you for your attention.