Unit,12,Mainly,Revision(一)_Unit12.docx

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1、Unit,12,Mainly,Revision(一)_Unit12Lesson 46 教学设计方案（一）Step 1 Lead in(Show some pictures to attract the Ss interests about the text.)Step 2 Reading:A.Ask the Ss to do some “True or False” exercises1. Some birds will fly away to the south when the weather turns cold; some animals hibernate in the cold w

2、ather.(True)2. Animals hibernate only in the earth. (False)3. None of the warm-blooded animals need to hibernate because they lead an active life which keeps up their normal body temperature even in very cold weather. (True)4. A hibernating animal does not breathe and cannot feel any pain. (False)B.

3、Questions and answers:1. Why dont some warm-blooded animals hibernate in the winter?(lead an active life, keep up, normal body temperature)2. Why do cold-blooded animals hibernate?(When the air temperature, below freezing, body temperature, drop, cannot move about; almost no food in the winter)3. Ho

4、w would you recognize that an animal is hibernating?C.Reading comprehension:1.The text mainly tells us that _.A .hibernation is more than sleepB. warm-blooded animals will do things different from cold-blooded animals in winter C. some animals live through the winter by hibernation or half-hibernati

5、onD. animals use different ways to protect themselves against the cold (key: C)2. Why do some animals sleep under the snow?A. Because they prefer the cold air in the snow.B. Because the air in loose snow will help to keep the cold out.C. Because they can adjust(调整)their body temperature there to fit

6、 for the cold weather.D. Because they are warm-blooded animals. (key: B)3. Which sentence carries the main idea of the second paragraph?A. Sentence 1. B. Sentence 2. C. Sentence 3. D. Sentence 4. (key: A)4. Why can the wolf keep awake in winter?A. Because it is a cold-blooded animal.B Because it pre

7、fers moving by nature. C. Because it can keep up its normal body temperature even in cold weather.D. Because it has to go hunting as a result of lack of food for the winter. (key: C)5. Why do frogs go to sleep under the mud in winter?A. Because they can escape from their enemies under the mud and th

8、e air there will keep the cold out.B. Because the air under the mud will keep the cold out and it is comfortable there.C. Because they feel comfortable there and they can get food easily.D. Because they have enough to eat there . (key: D)6. We will know an animal is hibernating if _A. it touches col

9、d and is breathing very slowlyB. it is sensitive to painC. its temperature drops to below zero centigrade D. it does not move (key: A)7. Why can a hibernating animal manage to live through the winter?A. Because it hardly makes any movement and breathes very slowly and it has enough fat stored in its

10、 body.B. Because it has already stored supplies of fat in its body.C. Because it will not use energy while sleeping since they never make any movement then.D. Because it doesnt breathe at all. (key: A)8.Why does the bear stop hibernating on warm winter days? A. Because the warmth makes it think the

11、winter has gone.B. Because it has to eat some food for the next long sleep.C. Because it feels cold and wants to warm itself up on warm winter days.D. Because it is going to hunt something on warm winter days. (key: A)9. Why does a squirrel hide nuts before the beginning of winter?A. Because it will

12、 eat a lot in winter to keep warm. B. Because it is hard to find food in winter.C. Because it needs to eat a lot to hibernate.D. Because it needs nuts to fight against its enemies. (key: B)10. We human beings are able to keep the cold out because _A. we are warm-bloodedB. we are clever enough to bui

13、ld houses and to wear clothes C. we are cold-blooded, and we do not need to hibernate D. for human beings, hibernation will use more energy (key: A)Step3:language points:本单元重点句型(1)Hibernation is more than sleep.(2)People who find hibernating animals asleep often think that they are dead.(3)You can t

14、ouch it, or even pull its tail, without causing it to move or wake up.(4)Hibernating in that way, the animals can sleep all through the winter.(5) The second is connected with the main use the body makes of foodto supply the energy for movements.(6) We have seen that hibernating animal reduces movem

15、ents to far below the ordinary level.(7) The animal hardly makes any movement, hardly uses any energy, and hardly needs any food.(8)Some animals, including some bears, only half-hibernate.难句解析：1They go to sleep in all kinds of places.它们到各种各样的地方去睡觉。go to sleep，fall asleep与sleep，这三个词（组）都有“睡着”之意。go to

16、sleep意思是“睡着，去睡觉”，fall asleep意思是“睡着了，酣睡”，它们都表瞬间动作，如表持续性动作或持续性状态，要用动词sleep。e.g.I found it very difficult to go to sleep我发觉很难人睡。Soon he fell asleep，for he was very tired他很累，很快就睡着了。we have slept(for) eight hours.我们已睡了八个小时。2They lead an active life which keeps up their normal body temperature even in very cold winter weather.他们生活得很活跃，即使在寒冷的冬天也能保持正常的体温。习惯用法（2）keep up保持，维持，接着，eg Let s hope the sunny weather keeps up for Saturday s tennis match.但愿星期六网球竞赛时还是这样的好天气。We。Are having difficulty keeping up。our。mortgage payments我们难以接着支付分期偿还的抵押货款。If you want to be a12下一页