英语家园» › 门户 › EnCorner › Public Speaking: Fish

Public Speaking: Fish

发布者: ccfeng | 发布时间: 2006-8-16 21:09| 查看数: 14661| 评论数: 13|

<div>Fish Fish? How much you know about them? But, I am not going to read to you anything from the encyclopedia. Fish in general is far too boring and anyone can pick up all the general information from encyclopedias and the Internet. So what I shall present to you is interesting facts about fish. After listening to my speech, I guarantee you that you will have further insights towards fish.When you go to an aquarium, you think that the tanks are made of glass, without doubt. No! It is acrylic, not glass. Why not glass? My answer to you is: acrylic is stronger and produces less distortion. It is 28cm thick!     At any one time, 4 million litres of water are in the Aquarium's tanks!How about pain? When a fish is caught on a hook and line, it can definitely feel through its nervous system that it has been hooked, and will try to escape.  Unlike humans, most fish have no frontal lobe in their brains and so they are not likely to be distressed by what they feel.The underwater world is not as silent as you all may think.  In fact, fish play an important role in contributing to the “noise”. The gas-filled swimbladder is used to amplify sounds.  Muscles attached to the swimbladder are contracted to produce sound waves that are heard as growls, yelps, whistles, grunts, hoots and drumming noises.  These noises are used to chase away predators or attract mates. Ganters and Kobs are well known fish that produce sounds.Swimbladders are vital in keeping fish floating.  Gas is pumped in or out to change the buoyancy of the fish.  The fish will die a horrible death if it is pulled too quickly to the surface, the gas in the swimbladder cannot adjust quickly enough to the decreasing pressure.  The bladder the either bursts or pushes the internal organs out of the mouth.Wonder why there are scales on a fish? The scales on a fish's body actually protect it from predators, parasites and sharp rocks as they form a flexible armour coating. The rows of scales bend with the swimming movements of the fish to make a streamlined body over which the water flows smoothly. Other than that, scales are also used to store essential minerals, such as calcium, which are absorbed when needed.All fish have an age just like us and we can find out a fish’s age by looking at the regular rings laid down on the scales. If they are laid down once a year then it is easy to tell the age of the fish.Another fact, fish grow throughout their lives, but they grow slower as they grow older.Now, imagine a fish lying on its side in the sand.  Its eyes have no eyelids.  What happens to that lower eye? Get flooded with sand? Flatfishes have the solution - they just move it!     The young flatfish has eyes placed on either side of its head. It swims in the plankton.     As it grows, one eye moves to the top of its head and the dorsal fin grows forward.     The adult flatfish lies on its side in the sand.  Both eyes are now on the upper side and can focus independently of each other. Interesting right?This is certainly not the end to the fascinating facts of fish. There are still lots of interesting facts waiting for you. From my speech, I hope it will change your perspective when you look at a fish next time.</div>

[此贴子已经被作者于2006-8-16 21:42:08编辑过]

fish, General, GLASS, public, speaking

今日最新热帖

今日全站热帖

最新评论

ccfeng 发表于 2006-8-16 21:43:56

Above is a speech on fish which our English teacher asked us to do. It is used for Oral Assessment. Everyone in the class has been given different topics and must go up to the front to deliver the speech. Classmates evaluate our performance and give us marks.

Quickie 发表于 2006-8-20 12:39:45

You forgot to tell us how great they taste [em31]

Rita娜 发表于 2006-8-20 13:20:43

<div class="quote">以下是引用ccfeng在2006-8-16 21:43:56的发言： Above is a speech on fish which our English teacher asked us to do. It is used for Oral Assessment. Everyone in the class has been given different topics and must go up to the front to deliver the speech. Classmates evaluate our performance and give us marks.</div>(The above ) is the speech on fish which our English teacher asked us to do. It is used for Oral Assessment. Everyone in the class has given
different topics and must go up to the front to deliver the speech. Classmates evaluate our performance and give us marks.

[此贴子已经被作者于2006-8-22 15:15:18编辑过]

Quickie 发表于 2006-8-20 13:23:48

I belive there should be a " THE " before Above......

Rita娜 发表于 2006-8-20 13:36:08

Thank you, dear Q, I AM so careless

christlulu 发表于 2006-8-20 17:41:16

rita,i think ccfeng is right in the sentance"Everyone in the class has been given different topics and must go up to the front to deliver the speech."

Rita娜 发表于 2006-8-21 10:44:43

Really? I don't think it is right!maybe you can say" different topics have been give by everyone in the class"or you can say " everyone in the class has given different topics ..."or you can say " everyone in the class is given different topics by the teacher"

ccfeng 发表于 2006-8-21 17:53:03

Dear all,My sentence is correct."different topics have been give by everyone in the class" is wrong as the verb going after been should be in past participle and you have changed the meaning of the original sentence by using "by", "to" should be the right word as the original sentence means that the teacher gave us the topics and not "topics have been by everyone in the class". Therefore, the correct sentence should be "different topics have been given to everyone in the class""everyone in the class has given different topics" is also wrong as we cannot use given right after "has" and we need to add "been" after the "has" to make the sentence grammatically correct. Therefore, the correct sentence should be, "everyone in the class has (been) given different topics"Although "everyone in the class is given different topics by the teacher" is grammatically correct, but it does not fit the whole paragraph correctly, we should use the past participle, "has been" instead.

Rita娜 发表于 2006-8-22 15:22:09

<div class="quote">以下是引用christlulu在2006-8-20 17:41:16的发言： rita,i think ccfeng is right in the sentance"Everyone in the class has been given different topics and must go up to the front to deliver the speech."</div>Lulu, this sentence is incorrect in my opinionbecause "everyone in the class " is the subject in the sentence, and "different topics" is the objective, so when you re-read the sentence ,you will find the key, be more careful !...... [em04] and after careful reading, i realize ccfeng is right, congratulations , haha.....I should have thought  that " teacher gives all of you topics and  then lets you all deliver the speach of their own".

[此贴子已经被作者于2006-8-22 16:06:36编辑过]

Rita娜 发表于 2006-8-22 16:17:13

"different topics have been give by everyone in the class" is wrong as the verb going after been should be in past participle and you have changed the meaning of the original sentence by using "by", "to" should be the right word as the original sentence means that the teacher gave us the topics and not "topics have been by everyone in the class". Therefore, the correct sentence should be "different topics have been given to everyone in the class"Rita: I agree with you, ccfeng.But it is right in grammar but it doesn't comply with your original meaning of ur essay."everyone in the class has given different topics" is also wrong as we cannot use given right after "has" and we need to add "been" after the "has" to make the sentence grammatically correct. Therefore, the correct sentence should be, "everyone in the class has (been) given different topics"Rita: I do agree with you, ccfeng, but it is still right in grammar when we never consider the original meaning,xixi~Although "everyone in the class is given different topics by the teacher" is grammatically correct, but it does not fit the whole paragraph correctly, we should use the past participle, "has been" instead.Rita: Bingo,ccfeng.In a word, I misunderstand the original meaning ,so appear the foolish mistakes.  [em04]

zoe 发表于 2006-8-22 17:48:54

I am confusion.

Rita娜 发表于 2006-8-25 12:47:41

Zoe, re-read the passage and the remarks carefully , you will know the answer.

tataoo 发表于 2007-8-31 14:19:51

i do think that the tanks are made of glass,as a result,i am wrong..

今日英文热帖

今日中文热帖

账号		记住	找回密码
密码			注册