Unit 12 Mainly Revision

　　你必须告诉他你为何拒绝他的提议。

3.deep, deeply

　　deep可作形容词，表示“深的”，又可作副词，表示“深深地”。这里是具体意义的“深”。

　　The river is very deep here. (deep是形容词)

　　He pushed his stick deep into the mud. (deep是副词)

　　在一些固定的搭配中使用deep, 尤其在介词词组前。如：

　　be deep in debt 债台高筑

　　be deep in thought 深入沉思

　　do sth. deep into the night 一直做到深夜

　　deeply是deep后缀-ly构成副词, 使用时一般具有抽象含义，意为“深深地，深厚地，深切地”。如：

We are deeply grateful for your help. 我们非常感谢你的帮助。

4.fly away 与fly off

　　1）它们俩都可表示“匆匆离去（飞去）”之意，但有一些差别。fly away距离较远，而fly off指距离较近。

　　Then they flew away into their hiding place.

　　后来他们窜回到他们躲藏的地方去了。

　　When he was driving very fast, one of the wheels of his wagon flew off.

　　他正把车开得飞快，一只轮子突然脱落了。

　　2）away是副词，off既可作副词，也可作介词。off后可跟宾语，away后则不可。如：

　　The bird shook its tail and flew away. 那只鸟摇着尾巴飞走了。

　　【注意】把动词keep, run, walk, move等后面加上away或off, 其区别与上述所谈类似。如：

　　What kept you away last Sunday? 上星期日你为什么没来？

　　Keep off the grass! 勿踏草地！

Lesson 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” exercises
　　1. Some birds will fly away to the south when the weather turns cold; some animals 　hibernate in the cold wather.(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.Questions and answers:
　　1. Why don’t 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. How would you recognize that an animal is hibernating?
C.Reading comprehension:
1.The text mainly tells us that ________.
　　A .hibernation is more than sleep
　　B. warm-blooded animals will do things different from cold-blooded animals in winter
　　C. some animals live through the winter by hibernation or half-hibernation
　　D. 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(调节)their body temperature there to fit 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 prefers 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 the 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 cold and is breathing very slowly
　　B. it is sensitive to pain
　　C. 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 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 doesn’t breathe at all.    (key: A)
8.Why does the bear stop hibernating on warm winter days?
　　A. Because the warmth makes it think the 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 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-blooded
　　B. we are clever enough to build 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 touch it, or even pull its tail, without c