关于海豚的英文演讲稿 篇1
Hopefully you already know that dolphins are not fish. Dolphins are warm blooded mammals like us. They breath air through a nostril on the top of their heads called a blowhole. Because dolphins breath air, they must surface periodically. Fish, however, breath by using gills underwater, and therefore do not need to surface. Many fish also have scales, which dolphins do not have. Instead, the skin of a dolphin feels rubbery. A layer of fat, called blubber, under their skin keeps them warm. The locomotion of fish and dolphins is also different. Fish swim by moving their tails from side to side (horizontally). However, dolphins swim by moving their tails up and down (vertically).
How many kinds of dolphins are there?
This question will probably never be answered correctly. As humans, we want to put everything we know of into a group. Some people like large groups with some variation and others like small, precise groups. Not everyone agrees about what marine dolphins deserve their own species name and what ones do not. I currently have 32 species of marine dolphins listed. I am pretty sure that this covers all the species accurately. Most people agree that there are six species of porpoises and five species of river dolphins
Dolphins can understand and interpret some words and actions, they cannot understand us word for word like in the TV show. Even though dolphins may not understand us completely, they might have their own languages. In fact, many people believe that dolphins communicate with languages.
关于海豚的英文演讲稿 篇2
Dolphin In the vast ocean live many creatures with great intellectual and physical capacities. Dolphin is one of those great creatures, whose capacities to think and move at an astounding rate puzzle those who study their behaviors, Dolphins possess something that makes them different from all the other sea creatures. It is not strength or speed but the size of their brains. Dolphin' s brain is almost the same size as that found in the human head. They live for a ling time. Dolphins' babies are born in the water. They can grow up to three and a half meters long. Dolopins use sound to help them find their way, look for their food and talk witheach other. Sound is just like their eyes and mouths.
关于海豚的英文演讲稿 篇3
One day Mr. Green, the science teacher, asked his class, "What do you want to be when you grow up?"
"I want to be a dolphin trainer like my uncle," Mike answered.
"Why do you want to be a dolphin trainer?" asked Mr. Green.
"Because I'm interested in dolphin language."
"Dolphin language? Tell us more."
"All right," answered Mike, "My uncle tells me that dolphins are very clever. One day my uncle saw a sick dolphin in the pool. It couldn't come up for air. So it whistled to the other dolphins for help. They came to their friend and made some strange sounds. They looked sad. Then together they pushed the sick dolphin's head up above the water. Soon it got well."
"Some scientists once said to my uncle, 'If you live with a dolphin and talk to it all day, maybe you can teach it some words.' My uncle decided to do that. He lived with a dolphin. The dolphin loved to play ball so he decided to teach the word 'ball' first. He threw a ball to the dolphin and said the word 'ball' many times. Soon the dolphin started to say the word."
Kate asked, "How do they make sounds?"
Mike didn't know.
"They make sounds through blowholes in their heads," said Mr. Green. "Scientists know a little about dolphin language, but they have a lot more to learn."
"That's why I want to be a dolphin trainer," said Mike.
关于海豚的英文演讲稿 篇4
Only mother love is true love 's gives everybody everything in all his life ,When you are still a baby ,mother takes good care of you as much as your waking hour she always holds you in her you are ill,she stop her work right now to look after you day and night and forgets about you are growing up day by day,she feels very you are old enough to go to school,mother still looks after you all the cold winter days,she always tells you to put on more always stands in the window waiting for you back from you are hurry to leave home for school for breakfast ,she feels worried about you at usually knows about your study and spends much money on your school things you do well at school will see the brightset smile on her face.
Mother is ailways ready to give everything she has to her children ,not to receive.
What true love that is in the world !We will remember Mother love forever .
Every one of us,rich or poor,should at least have one or two good friends will listen to me when I want to speak,will wipe my eyes when I cry,will take care of me when I am sick,and my friends will go together with me side by side through this journey of life.
As students,we could share more time with our friendship in our young hearts is pure,fresh and simple.I often feel very lucky to have a lot of good cially when I had Justin as one of my best in was my English teacher from the USA.I met him in 1996 when I was a student who could only speak very little in was a vivid young man with a bright smile on his face,and he always had his special way to make the class active and taught us English by telling stories,playing games,singing songs,and even dancing.I could still remember very clearly that one afternoon when we fin-ished our class,we went to some other classes to sing songs for them,just like what people do in the states on Christmas was so interesting and in was an excellent teacher,because he taught us not only how to study English well,but also the way to find out the beauty of the world and the way to be angels to others' lives.I know there was friendship and pure love in our ng this valuable emotion neither nationality nor age was important,the real importance lay in faith,under-standing,and in is the best friend I have ever had,and I know I will cherish those days of staying together with him as the best part of my memory.
Friendship is a kind of treasure in our is actually like a bottle of wine,the longer it is kept,the sweeter it will is also like a cup of we are thirsty,it will be our best choice,but when we have enough time to enjoy ourselves,it is also the most fragrant drink.
关于海豚的英文演讲稿 篇5
Good afternoon, everyone!
The topic of my speech today is “Do trust us—a generation born in the 90s”.
Living in an environment full of fierce competition, we, a generation born in
the 90s, are faced with more problems in entering higher schools and getting employed. Under these circumstances, we are developing our special manners and values, which has raised people’s concern.
They worry we care too much about ourselves and are unwilling to cooperate with others, which makes it hard for us to achieve success in whatever we do. Besides, they consider us as lacking in perseverance, and this is what it takes to do any job well. Without it, we may easily give up in time of difficulty. They are also concerned that we are so eager to win instant fame that we follow fashion blindly, which will in turn ruin our values and future.
However, we, a generation born in the 90s, have our own advantages despite some weaknesses. Firstly, we have the courage to meet challenges and take risks, which helps realize our dreams. In addition, we are quick-minded and creative. We can do our work more efficiently. Of course, we still need to learn more from those experienced. Please do trust us!
Thank you for your listening!