广东省惠州市惠东县惠东荣超中学高中英语 Unit 4 Using language学案 新人教版必修3
学习目标:
1. To be able to read the passage by skimming and scanning.
2. Master the important words and expressions in this period.
重点:
Be able to use the important words and expressions in this period flexibly.
课前预习案Previewing Case
使用说明及学法指导：1. 自我学习课本30-31页里的内容，完成预习案。
2. 完成时间25-30分钟。
Task1 Write down the words and expressions according to the following Chinese meaning.
I. 单词巩固
1. v. 碰撞，坠落__________ 仍是，剩下___________ 允许___________
减少，减轻__________浮动，漂浮____________
2. n. 生物学__________ 卫星___________ 物理学家____________
拉力，牵引力_________重力_________ 气候__________
宇宙飞船__________
3. adj. 极大的，强有力的___________ 幸运的，好运的___________温和的；文雅的_________
II. 短语记忆
1. 挡住（光线）______________ 2.连锁反应_______________
3. 第一次____________________ 4.依靠，依赖于_______________
5. 感到高兴_______________ 6. 既然____________________
7. 熟悉，掌握_______________ 8. 爆发____________________
Task 2 Read the passage on Page 30-31 and summarize the main idea:
Last month I visited the moon with my friend. Before we left, I was told the force of would change times on our journey. Then we took off. As we left the earth, I became very ,but gradually the weight . When I was in space, it . We weightlessly in the cabin and I . When I was on the moon, I was surprised to find even walking needs lots of practice gravity has changed. Returning to the earth was very . We were amazed to watch fire on the outside of the spaceship.
课堂探究案 Exploring Case
Step 1: Reading Comprehension
ⅠFast Reading
Match the three ways in which gravity changed
(1) Left the earth A. It became very light.
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(1) In space B. The gravity became very strong.
(2) On the moon C. The gravity disappeared.
Match the weight changed
(1) Left the earth A. He is weightless.
(2) In space B. He weighs less than on the earth.
(3) On the moon C. His weight is normal.
Ⅱ Careful Reading
Read the text carefully and choose the best answer:
1. The passage is mainly about ____?
A. introduction of the moon B. the gravity that I felt on my way to the moon
C. my visit to the moon D. my friend Yanping, an Astronomer
2. According to the text, we know that the force of the gravity would change _____ times.
A. 2 B. 3 C. 4 D. 5
3. When did the author feel strongest of the gravity of the earth?
A. On the moon. B. On the half way to the moon.
C. At the very beginning D. On their leaving from the moon
4. What causes the writer to feel that he becomes weightless on the moon?
A. Spaceship B. Gravity C. His friend D. His Good feelings of the moon
5. From the text we can know if a man grows up on the moon, _.
A. he will grow taller than on the earth
B. he will grow shorter than on the earth
C. he will become fatter
D. he will become weightless
Read the text carefully again and fill in the blanks.
Periods
Details
On leaving the earth’s atmosphere
(Para 2)
l With the rocket rising into the air, we were
into our seats because of the strong of the earth’s gravity.
l The lessened as we moved far away from the earth.
l When getting closer to the moon, we felt pulled by
,but it was not as strong as the earth’s.
While landing on the moon
(Para 3)
l We weigh than on the earth.
l While trying to step forward, I found I was carried
as far as on the earth.
l It took a bit of to walk on the moon.
When leaving the moon
(Para 4)
l Leaving the moon’s gravity was less than leaving the earth’s.
l Returning to the earth was very because fire broke out on the outside of the spaceship as the earth’s gravity .
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l We were pushed hard into our seats again when we came back to land.
Step 2: Language Points
1. When we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earth’s.
当我们更接近月球时, 就会感到月球的引力在拉我们。但是, 月球的引力不像地球的引力那么大。
The school is close to the post office.
get close to 指 变化
be close to 指
as strong a pull as the earth’s 像地球的引力那么强大
归纳：as+adj./adv.+as…
as+adj.+a/an+n.+as… 表示：_______________________________
1)He is as good a director as he is an actor.
2)He (和我游得一样快)。
3)She is (当演员和当歌手都一样出色)。
2. I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.
我立刻感到高兴起来，由于失重我在太空舱里飘来飘去，我望着地球越来越小，而月球越来越大。
cheer up:
1） _________________________（人群欢呼起来） when they saw the team arrive.
2）他带她去听音乐会来使她高兴。 .
3. But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. 当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。
The number of students in our school is three times larger than that in theirs.
我们学校的学生数量比他们学校的多三倍。
The newly broadened square is four times the size of the previous one.
新扩建的广场是未扩建时的四倍大。
twice as far as __________________________
three times larger than ________________________
our times the size of ___________________________
归纳倍数的表达法：1）
2）
3）
这个房间是那个房间的三倍大。
1）
2）
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1）
4. ... “walking does need a bit of practice now that gravity has changed.”
......既然引力改变了，走路也的确需要练一练了。
now that 表示 ，同since相似，语气较弱，强调人们已知的事实。
1） Now that you’ve grown up, you can decide it yourself.
2） 既然你有机会，就应该好好利用它。
5. After a while I got the hang of it and we began to enjoy ourselves.
过了一会，我才掌握了走路的诀窍，这才开始感到自如了。
got the hang of:
1） I’ve been trying to this new typewriter.
我一直想掌握这部新的打印机的用法。
2） 现在我已经掌握了这个词的用法了。
_________________________________________________________________
Step 3 训练案:
根据括号内的提示翻译下列句子。
1. 老师幽默的讲话让我们很振奋, 之后班里的气氛也轻松起来。(atmosphere; cheer up)
_____________________________________________________________________
2. 既然我们已经完成了设计, 就该由公司来进行建设了。(now that; in one’s turn)
_____________________________________________________________________
3. 让我们十分失望的是, 战争最终在那两个国家之间爆发了。
(to one’s disappointment; break out)
_____________________________________________________________________
4. 长江差不多比珠江长两倍。（倍数表达法）
______________________________________________________________________________
语法填空：
Last month I made a trip into space with my friend Li Yanping. We visited the moon in our spaceship. Before we left, Li Yanping explained __________ me that the force of gravity would change three times on our journey and _________ the first change would be the most____________( power). Then we were off. As the rocket rose slowly into the air we began to feel ________ pull of the earth, which is _________ we called gravity. At first it pushed us _________ hard back into our seats that we could not say anything to each other. _______________(gradual) the weight lessened and I was able to talk to him. _________ we got closer to the moon, we felt its gravity pulling us but it was not as strong a pull as the earth’s. I cheered up immediately and floated_________________(weight) around in our spaceship cabin_______________(watch) the earth become smaller and the moon larger.
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B3U4-5 参考答案
课前预习案
Task1 I. 单词巩固
1） crash；remain；allow；reduce；float
2） biology；satellite;physicist;pull;gravity;climate;spaceship
3） powerful;lucky;gentle
II. 短语记忆
block out;chain reaction;for the first time;depend on;cheer up;now that;get the hang of;break out
Task 2
Gravity;three;heavy;lessened;disappeared;floated;cheered up;now that;frightening;break out.
课堂探究案
Step 1
ⅠFast Reading
Match the three ways in which gravity changed
(1) Left the earth A. It became very light.
(2) In space B. The gravity became very strong.
(3) On the moon C. The gravity disappeared.
Match the weight changed
1） Left the earth A. He is weightless.
2） In space B. He weighs less than on the the earth.
3） On the moon C. His weight is normal.
Ⅱ 1-5 CBCBA
Read the text carelly again and fill in the blanks.
pushed back;pull;weight;the moon's gravity;less;twice;practice;painful;frightening;increased
Step 2
1. 接近…;距离;接近…;状态;像A一样……;
(1) 他当导演像当演员一样出色。
(2) swims as fast as I
(3) as good an actress as she is a singer
2.高兴，欢呼; 1)The crowd cheered up 2)He took her to the concert to cheer her up
3.两倍远;大三倍;四倍大;倍数+as+adj./adv.(原级)+as…;倍数+比较级+than…;倍数+the size(height/length/width…)+of…;The room is three times as lage as that one.;The room is three times lager than that one.;The room is three times the size of that one.
4.既然;1)既然你已经长大了，你可以自己决定了。
2)Now that you have got a chance, you should make full use of it.
5.掌握，精通; 1)get the hang of
2)Now I have got the hang of the usage of this word.
Step 3
1.The atmosphere in the classroom relaxed after the teacher's humorous talk cheered
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us up.
2.Now that we have finished the design,the company will do the construction in its turn.
3.To our disappointment, the war between the two countries broke out finally.
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