Learning about Language优秀公开课教案

必修三

Unit 4

Astronomy: the science of the stars Period 1

Vocabulary 教学设计

[Teaching objectives] 1.

Be able to pronounce the new words with the help of phonetics symbols; 2.

Observe and summarize some words formation; 3.

Use the key words and expressions correctly in contexts. [Key points] 1.Be able to pronounce the new words with the help of phonetics symbols; 2. Use the key words and expressions correctly in contexts. [Difficult point] Observe and summarize some words formation; [Teaching methods and strategies] 1.

Group work 2. Spelling 2.

summarizing 4. Practicing Step1 : Lead in Show a picture on the blackboard: the solar system T: Are you familiar with the picture? Ss:Yes. T:What is it about ? Ss:“solar system ”. T: Very good .We are all interested in the universe because it is still a mystery for us .From today we will learn the unit 4 Astronomy:the science of the stars. First,let’s deal with the vocabulary. 设计意图：以展示太阳系的图片开始吸引学生的注意力顺利导入本单元话题，激发学生的学习兴趣。

Step2 : Checking the preview Ask students to share their answers one after another.

Ⅰ.Guess the meaning of underlined words in contexts. （

）1. The terrorists exploded a bomb in a store. A.爆炸 B.戳穿 C.（情绪）爆发 D.激增

（ ）2. Don’t worry. I’m sure things will get better in time. A.终于 B.总有一天 C.及时 D.按时

（

）3. The big black hen laid a big egg yesterday morning. A.产卵 B.摆，放 C.卧，躺；位于 D.说谎

试比较下表：

躺

撒谎

动词原形

第三人称

过去式

lie lie

过去分词

现在分词

放/搁/产卵

lay （ ）4. Whether we can go outing depends on the weather. A.取决于 B.信任，信赖 C.依靠；依赖 （

）5. The good news cheered the family up. A.使振奋 B.高兴 C.欢呼 D.菜肴，酒菜

（ ）6. Now that you grow up, you should not rely on your parents. A. 现在 B. 那样 C.由于，既然

（

）7. Many old customs have died out. A.相继死去 B（声音、光线）减弱

C. （程度上）由强变弱 D. 灭绝；消失

（

）8. World War II broke out in 1939. A.

(关系)破裂，结束 B（机器）坏 C. 闯入 D.爆发

设计意图：考查学生在具体的语境中对单词或短语的理解能力。

Ⅱ. Important expressions 1.突发；爆发 2.密切注意；当心；提防 3.轮到某人 4.阻止；制止 5.挡住（光线） 6.感到高兴；感到振奋 7.及时；终于 8.既然 9.solar system 10. lay eggs 11.give birth to

12.get the hang of

Ⅲ.Enlarge your vocabulary（look up the words in the dictionary）

antonym 1.

Solar adj. adj.阴历的

2.

Pull v. v. 推

3.

Lesson v. (同音词） 4.

Vapour n.. → n.液体→ n.固体

设计意图：通过检查词汇预习作业这个环节掌握学生对词汇的熟悉情况以及在字典中查找单词的能力，增加学生的词汇量。

antonym Step3: Class learning Task 1: work in groups,try to pronounce the new words together,then ask students to read the words one by one. 设计意图：学生合作根据音标对单词发音，一方面锻炼了学生对音标的拼读能力；

此外，又培养了学生的团结协作精神。

Task 2: Work together and finish the following words-formation. The compound words 1.

2. The transformation words 1.puzzle n. v.

2. pull n. v. 3. float n. v. The derivative words Items biology n. Physics n. geography n. astronomy n. V.生存；存在

Violent adj. Present adj. V.灭绝

V.反应

exhaust V.用尽；耗尽

Nouns 生物学家 物理学家 地质学家 天文学家 existence 暴力，暴行 出席；到场； extinction 灭绝

reaction 反应；回应

exhaustion 耗尽；筋疲力尽

Rules

Examples

设计意图：让学生熟知英语的三大构词法，慢慢培养学生对词汇的认知能力；同时，通过派生词的词性转换，学生观察、总结出了三种名词的后缀-ist, -tion, -ence.

Task 3:Practice Ⅰ.Write some proper words with the clues. 1.

The _____________(气氛) changed as the teacher walked in.

2.

With the d_____________(发展)of modern agriculture and industry, our life has improved a lot.

3.

G______________(一般) speaking, girls are better at learning to speak languages than boys.

4.

U_________（不像）other girls, she prefers toy guns to dolls.

5.

The heavy rain p____________(阻止) the football game yesterday. 6.

Try and c________ up a bit; life is not that bad!

Ⅱ.Choose the following words with their correct forms to complete the sentences. in one’s turn

in time

prevent…from

break out

be harmful to

unlike

as a result of

now that

give birth to

exist

depend on

1.

Keep trying, and __________ _ you will succeed.

2.

We must _________ them _________ making trouble.

3.

Good health ______________ good food, exercise and getting enough sleep.

4.

World War I _____________ in 1914.

5.

He wipes the blackboard _______________ this week.

6.

Although they are twins, they are very _________.

7.

We cannot _________ without food or water.

8.

Mrs White ___________________ a fine baby last year.

9.

___________ you have finished your work, you’d better have a rest.

10.Your smoking can ________________ the health of your children.

11.

He was late ________________ the snow.

设计意图：随堂练习，巩固课堂知识，考查学生对词汇的运用能力。

Step4: Homework 1.

Translation：

1 system 2 theory _________ 11 cheer up _________ 12 now that _________ 14 watch out _________ 15 exist _________ 17 astronomer _________ 18 lay eggs _________ 19 system _________ 20 religion _________ _________ _________ _________ _________ _________ 21 prevent…from____________

22 atmosphere

____________ 23 million

____________ 24 globe

____________ 25 thus

____________ 26 give birth to____________ 3 violence _________ 13 break out 4 reaction 5 in time 6 dissolve _________ 16 astronomy 7 unlike 8 atom 9 harmful 10 puzzle __________ 27 in one's turn____________ __________ 28 fundamental____________ __________ 29 mammal

____________ __________ 30 gravity

____________

Ⅱ. use the proper words to complete the sentences.

1.The study shows that the violent scenes in movies and TV are harmful children.

2.The woman who gave birth star.[来源:学|科|网]

the twins last night might turn out to be a film

3.That’s really a （ puzzle ） problem; no wonder all the students looked （puzzle）. 4.Social attention should be paid to preventing our earth from 6. .Fresh air is （pollute）. 5.Tom’s father is so (violence）that Tom is afraid to tell him he has failed. （foundation）to good health ,so we should make every effort to improve air quality..C 7. He hardly seemed to notice my (present). Ⅲ. Grammatical filling

Long ago, there lived in Egypt a learned man. He was so well-known 1 his knowledge of almost everything that lots of people from all over the country came to learn from him. The great man 2 (teach) his students whole-heartedly and answered their questions with great 3 (patient). One day, a student asked him, “My dear teacher, didn’t you say you yourself have many more questions about things than we do? 4 I think we students have far more than you.”

With a smile on his face, the teacher drew two circles, one as large as a big cake, the other smaller. Then he said, “Of course, I have learned much more. But it is wrong 5 (think) a teacher has fewer questions than his students. Now, look at these two circles. The inside of the 6 (big) one is my knowledge of things, and the inside of the smaller one is 7 (your). Out of the circles is what is still unknown to us. Since mine is larger, I have to use the longer line to draw the bigger circle. That means I have more opportunities to face something 8 (know). And that’s 9 I myself have more questions than you do. The 10 (much) you learn, the more questions you have. You will never learn enough, you know.”

设计意图：课后练习，从单词到句子再到语法填空，梯度设计，从简到难，符合学生对知识的理解和掌握，巩固了课堂知识，考查学生对词汇的运用能力。