必修5Unit 1 Great Scientists 泛读课

济宁市第一中学 林翠菊 李雯 张学敏 刘玉东 邵长云 孔庆民

第一步 作业检查

1. 核对 42 页 Using words and expressions 和 Using structures 的答案。

2. 检查学生的背诵。

第二步 导入课文 向学生提出下列问题：

1. Do you know who put forward the theory that the sun is the centre of the solar system?

学生可能回答出是：哥白尼，告诉他们英语名字 Nicolaus Copernicus。

2. Before Nicolaus Copernicus, what kind of theory it was?

Christian Church believed God had made the world and for that reason the earth must be the center of the solar system.

第三步 听“Copernicus Revolutionary Theory”的录音，判断下列句子的正误。

1. Nicolaus Copernicus was excited and happy when he found his theory.

2. Christian Church believed the earth must be the centre of the solar system.

3. Nicolaus Coperni

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cus worked hard on his theory.

4. In 1510 Nicolaus Copernicus showed his theory privately to his friends.

5. His friends were very angry and stopped him publishing his ideas.

6. The Christian Church accepted Copernicus' theory at last.

Keys：1.F 2.T 3.T 4.F 5.F 6.F

第四步 小组讨论

Discuss Exercises 1 & 2 on page 7.

第五步 语言点讲解

1. lead to: 导致，通向

Your carelessness led to this traffic accident.

你的粗心导致了这次交通事故。

All roads lead to Rome.

条条大路通罗马。

lead sb. to (do) sth. 诱使…… 做……

What led you to believe she was a thief?

什么使你相信她是个贼？

What led you to this conclusion?

什么使你得出这个结论？

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2. Only + 状语放在句首，主句要部分倒装。

Only in this way can we work out the maths problem.

仅以这种方式我们才能计算出这道数学题。

Only when Mary heard the truth, did she begin realize that she was wrong.

仅当玛莉听道了真相时，她才知道她错了。

Only when ______ in 1949 ______ to his motherland.

A. was the war over; he returned B. the war was over; he returned

C. the war was over; did he return D. was the war over; did he return

Key: C

3. make sense: 有意义，有道理，是合情合理的

Your explanation doesn't make sense/make no sense. 你的解释是没道理的。

Your attitude makes sense.

make sense of sth: to understand sth 理解……，懂得……

Can you make (any) sense of what this writer is saying? 你能理解这位作者在说什么吗？

4. reject: 拒绝（接受）

Sh

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e rejected my suggestion. 她拒绝了我的建议。

He was rejected for the army because of his bad eyesight. 他由于视力差而被拒绝入伍。

第六步 Finish Reading Task on page 45

1. 介绍 Leonhard Euler 的有关情况

Euler (1707—1783) was a mathematician who worked in Russia and Germany. He wrote more about Mathematics than anyone before or since. He invented the new branch of mathematics: topology. He could be called “the father of modern mathematics”.

2. 让学生快速阅读课文，并标出疑点难点。

3. 让学生讨论 46 页的 4 个问题。

Answer key to these four questions:

· Figure 1 has an Euler path.

· Figure 2 has an Euler path.

· Figure 3 doesn't have an Euler path as it has more than two odd points.

· Figure 4 has an Euler path.

第七步 释疑

1. To his surprise, he found that he could cross six of the bridges without going over any of the

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m twice or going back on himself, but he couldn't cross all seven.

令他惊奇的是，他发现在不走两次或回头路的情况下，只能同时穿过六座桥却不能穿过所有的七座桥。

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