desire可以用作名词，也可以当及物动词用， 作及物动词时，它后面可以接名词、不定式、从句等等。例如： Of course， they all desire happiness and health. 当然他们都渴望幸福与健康。
We desire to see the result. 我们希望看到结果。
I desire that you should come on time. 我希望你准时到。
3.seat： page62， part2，Line 1
D：Greetings， learned judge！ I do not envy you your job. This is a most troublesome case.
P：Greetings！ Please be seated. Are you Antonio， and is this your agreenent with Shylock？
be seated
[说明］ seat是及物动词，主语是地點或地方，人作宾语，因此人作主语時，常用 be seated结构； seat还可以作名词用，意思是 “座位”；要分清seat与 sit， 后者是不及物动词，人作主语，地点作状语。
例如：Please be seated. 请坐。
He sat there， looking very calm. 他坐在那儿，看起来很平静。
4.upon： page62，page64
P：Mercy brings good. Mercy falls like the gentle rain from the shy upon the earth.It blesses those who give it，and those who receive it.We should learn toshow mercy to others.Do you still sdk for this pound of flesh？
5.comfort：Page64
take my life too！ My money andgoods are as dear to me as life itself.They are my only comfort.When you take those away from me， you also take my life.
comfort可以用作名词，也可以当及物动词用，意思是“安慰”，后面接某人。
例如： The sudden thought greatly comforted her. 这个突然的想法，极大地安慰了她。
She lives there in comfort. 她舒适地生活在那里。
[1]Mainly revision
Mainly revision
【教学目标】
一、熟练读写能够运用下面的词汇：
flat， silly， downtown， tail， standard， postman， mailbox， sex， high； department store， keep up， show off， high-rise block二、学会运用及掌握如下句型：
1.1 suggest（ed） you （should） do…
2. It’s much ＋比较级＋ to do… than to do…
3. This helps to keep the cold out.
4. It’s a different matter for sth.
5. Hibernation is more than sleep. 6. The squirrel was usually described as a good animal.
三、系统归纳准确记忆熟练运用Unit 7～Unit 11 出现过的重点语法项目，重点：复习构词法知识，不定式的用法和动词时态及间接引语。另外Unit 7 ～Unit 11 出现过的日常交际用语，归纳有关建议的各种句型四、灵活运用交际用语：
You’d better（ not）…You should/ought to…
You need （to）… You could…
I suggest you （should）。 Shall we… ？
Let’s… 。 What/How about… ？
Why not… ？ Why don’t we / you… ？
【教学建议】
教学教法：
本单元日常交际用语的重点是让学生掌握向他人提出建议和忠告的方式。第45课第二部分已给出的短语和句型足以满足学生在实际阅读及写作中的需要，因此教师应从熟练运用的角度对学生进行指导和要求。例如清楚区分每种句型和表达的准确含义及用法，搭配。可以要求学生做适当的句式转换练习，造句练习等。
2.本单元阅读文章为有关冬眠的科普短文。从文章所用语言来看，较为平易，浅显，然而其中也有因阐明事理的需要而出现的长句，难句，教师要对此进行专门的分析，讲解。此外，教师还可以从兴趣爱好（如养小动物）及爱护动物的角度适度扩展与课文相关的内容，来达到了解掌握科学知识并能够学以致用的目的。
词语辨析：
1.weather和climate
weather 意为“天气”，为不可数名词，不能在前面加不定冠词，如我们只能说in such fine weather ， 而不能说in such a fine weather。如：The weather has changed. 天气变了。
【注意】weather前虽不可加不定冠词，但在表示“各种各样的天气”，或“不论哪种天气”时，weather用复数。如：She goes out in all weathers.
weather 指某特定地区在一定时间的气象情况。
climate 指一般比较长的时间，如一季的天气状况。
A drier climate would be good for her health.气候干燥的地区会对他的健康有益。
2.cause 和reason
cause 用作及物动词，意为“引起、使产生、给……带来。”例如：What caused the accident？
是什么引起这个事故的？
cause 用作名词，意为“原因，理由”。例如：Carelessness is the usual cause of fire.
造成火灾的原因通常是不谨慎。
cause 是造成一种事实或现象的“原因”，Heat is the cause of the expansion of matter.热是物体膨胀的原因。
reason 是说明一种看法或行为的“理由”。例如：You must tell him the reason why you won’t accept his offer.
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！
【教学设计示例】
Lesson 46
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 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 sleepB. warm-blooded animals will do things different from cold-blooded animals in winterC. some animals live through the winter by hibernation or half-hibernationD. 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.
