Unit-4--a-visit-to-the-moon教案-(1)

. Unit 4 Astronomy: the science of the stars教案
Period 4: Using language
Reading: A Visit to the Moon
授课教师：王艳
Teaching objectives：
1.全面理解课文。

2.探究练习单元重点短语和句型，提升语言运用能力。

3.学习英语，热爱科学。

Teaching important points:
prehending the whole passage, and be able to grasp the key points from it.
2.Master the important words and phrases.
Teaching difficult points:
1.How to figure out the key points from the reading passage.
2.Learn to use “…times as …as”
Teaching procedures:
Lead in : Good morning, everyone. Today, we are going to learn the second reading passage in unit 4---a visit to the moon. Through this period, we will have a competition. I will divide you into two groups, the winner group will not need to do today’s homework. Is it exciting? Ok, so try your best to win! Let’s begin!
Step 1. Pre-view check:
1. 有机会做某事 have a chance to do sth 6. 既然 now that
2. 去旅行 make a trip 7. 过了一会 after a while
3.出发，起航 be off/set off 8. 熟悉，掌握，理解 get the hang of
4. 靠近，接近 get close to 9. 玩的开心enjoy oneself
5. 高兴，振奋起来 cheer up 10. 爆发break out
Step 2．Competition
Do you want to visit the moon?
Do you know who the first person that stepped onto the moon was? Let’s see who know more about the astronomy.
Part 1: True or False
1. The earth moves around the sun.
2. It takes the moon one day to move around the earth for a round.
3. Earth is the only planet moving around the sun.
4. There is atmosphere on the moon.
5. There is no gravity on the moon.
Part 2: Multiple Choices:
1._____ was the first person landing on the moon?
A. Armstrong
B. Yang liwei
C. Tom Cruise
D. Issac Newton
2. When did Armstrong land on the moon?
A. 1921
B. 1969
C. 1954
D. 1949
3. Who is the first Chinese astronaut to go into space?
A. Yang liwei
B. Nie haisheng
C. Fei junlong
D. Zhai zhigang
4. When did Yang Liwei go to the space?
A. Oct, 2003
B. Jan, 2003
C. Oct, 2004
D. Jan, 2002
5. So far, how many countries have succeeded in sending people up to space?
A. Two
B. Three
C. Four
D. Five
Step 3 Fast reading:Read the passage quickly, and find out the topic of each paragraph: Para( ): The things I did on the moon.
Para( ): We turned back to the earth.
Para( ): Last month, we visited the moon.
Para( ): How the force of gravity changed when we traveled from the earth Step 4:Detail reading
Please read the passage and underline the sentences about the change of the gravity and our weight during the journey.(match)
On the moon disappearing
Gravity in space strong
On the earth very light
On the moon heavy
Weight in space weightless
On the earth weigh less (one -sixth)
Step 5 Summary
Last month I visited the moon with my friend. Before we left, I was tol d the force of g_____
would change three times on our journey. Then we took off. As we left t he earth, I became very
h_____. Gradually the weight l_______. When I was in space, it d________ __. We f_______
weightlessly in the cabin and I c_____ ___. When I was on the moon, I was surprised to find out even walking needs lots of practice n__ ____ gravity changed. The returning of the earth was
very f_________. We were amazed to watch fire b____ ____ on the outside of the ship.
Step 6. Languange points
1. But when I try to step forward, I found I was carried twice as far as on the earth and
fell over.
twice as …as…“是…的两倍”
1. “A + be + 倍数 + as +形容词原级 + as + B”.
倍数 2.“A + be + 倍数 +形容词比较级 + than + B ”
3....times＋the＋名词（size, height, weight, length, width）＋of
即学即练：1.1）The library in our school is six times as big as that in yours.
2）The library in our school is ___ ____ _____ than that in yours.
3）The library in our school is __ _____ the ___ of that in yours.
2.这条河是那条河的两倍宽。

1.)____________________________________________________________________________
2.)___ _________________________________________________________________________
3.)_________ ___________________________________________________________________
3.这块石头的重量是那块石头的三倍。

1.)____________________________________________________________________________
2.)___ _________________________________________________________________________
3.)_________
___________________________________________________________________
2.“Oh, dear,” I cried, “walking does(表强调) need a bit of practice now that gravity has changed.”
now that+ 从句: 既然；由于
eg. Now that you have finished the work, you should have a rest.
(1.) 既然你来到这里，你就应该好好学习。

_______________________________________________
(2.)____you’ve got a chance, you might as well make full use of it.
A.Now that
B. After
C. Although
D. As soon as
3. 3. We watched, amazed as fire broke out on the outside of the spaceship as the earth’s gravity increased.
break out:（指战争，灾难，疾病等的）爆发
与break相关的短语:
break down 打破; 毁掉; 坏掉 break in 破门而入; 打断 break through突围; 突破
break up 打碎; 拆散; 分裂; break one's word 食言; 说话不算数
1.）The bridge ___________in last earthquake.
2.）She has ____________ our conversation.
3.）A fire __________ in his house last night.
4.）Their marriage ___________ last month.
Step 7 Homework
1. Read the passage after class, and review what we have learned today.
2. Copy the important phrases (10+1).。