4. Hibernating in that way, the animal can sleep all through the winter.
用那种方式冬眠，动物可以睡过整过冬天。
句中的 hibernating in that way是现在分词短语在句中作状语，相当于as they hibernate in that way。
5．We have seen that hibernating animal reduces movements to far below the ordinary level.．
冬眠动物的活动量减少到远远低于一般水平。
(1)句中的 far below意为“远远低于，比……低得多”。e．g．
In winter the temperature of Harbin is far below that of Wuhan．
冬天哈尔滨的气温比武汉的低得多。
（2）句中的reduce．．to作“减少，使处于……状态”解。e．g．
① The house was reduced to ashes by the big fire.那场大火把屋子化为灰烬。
②The man was reduced to begging for food．那男人沦落到讨饭的地步。
Step4:Fill in blanks.
1. They go to sleep in all kinds of places. Red squirrels disappear inside trees, bears use caves, frogs go deep under the mud, and many other animals dig holes in the earth .A good many animals sleep under the snow. There is a lot of air in loose snow, and this helps to keep the cold out.
2. Hibernation is more than sleep. It is a very deep sleep.the animal’s temperature drops to just over zero centigrade, and its heart beats very slowly.People who find hibernating animals asleep often think that they are dead; the body feels very cold, and the animal may breathe only once every five minutes. A hibernating animal cannot feel any pain. You can touch it , or even pull its tail, without causing it to move or wake up.
3.Hibernating in that way, the animal can sleep all through the winter. You might wonder how it manages to live withut eating for so many months . The answer lies in two facts. The first is that it has stored supplies of fat in its body during the summer and autumn. The second is conneted with the main use the body makes of food---- to supply the energy for movement. We have seen that the hibernating animal reduces movement to far below the ordinary level. Even the movements of the heart and lungs are greatly reduced.The animal hardly makes any movement,hardly uses any energy, and hardly needs any food.
Step5:Homework:Write a summary of the test.
Lesson 46 教学设计示例（二）
Step1:Revision: revise the key words in the dialogue by filling blanks.
a.I suggest you take a tent.
I can lend you one and a few pieces of equipment.
It’s much cheaper to camp than to stay in a hotel.
b.Why not take a friend with you?
Then you can share the cost of the gas and the car.
I’d come too if I had time to spare.
Step 2 Lead – in:
Show 4 animal pictures and ask them what they are doing.
Step3.presentation:
Watch and answer(I):watch the vedio once and answer T. or F. questions.
1.All the birds will fly away to the south when the weather turns cold.(F)
2.Animals hibernate only in the earth.(F)
3.Cold-blooded animals need to hibernate.(T)
4. A hibernating animal does not breathe and cannot feel any pain. (F)
上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] 下一页