1、Unit 4 Amazing Science Topic 3 China is the third nation that sent a person into space. Section C 制作学校：巴村一中 修订人：王淑静 学习目标 1.学习101页-102页的单词 2.学习P101的1a并完成P101-102的内容。 3.继续学习定语从句 4.学会用英语描述电脑的利与弊 自学指导（一） 1.自学内容：课本101-102页的生词和短语 2.自学方法：先根据音标试读，同桌互相正 音。 3.自学时间：5分钟 4.自学要求：会读，知道其汉语意思。 自学检测1. 英译汉： entertainm
2、ent- doubt- no doubt- tiny- inside- normally- brain- cancel- workplace- connect- for instance- besides- properly- 娱乐；招待 怀疑，疑惑 无疑的 极小的，微小的 在.里，在.内 通常，正常情况下 脑；智力；脑力 取消，撤销；废止 工作场所 连接 例如 而且 正确地 自学指导（二） 1.自学内容：课本第101-102页1a部分 。 2.自学方法：扫读。 3.自学时间：8分钟。 4.自学要求：读1a 完成1b Underline the topic sentence of each p
3、aragraph. 1. Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure. 2. Since the Internet came into being, peoples lives at home have been changed, too. 3. Computers have improved our lives, but they have brought problems, too. 自学检测自
4、学检测2 自学指导（三） 1.自学内容：课本第101-102页1a部分 。 2.自学方法：精读。 3.自学时间：5分钟。 4.自学要求：读1a 完成1b 2 1b 2. Complete the following diagram. computers usage problem work daily life 1. _ of a spaceship. 2. help doctors _. 3_ in factories. 4.help businessmen _. 1. play games and _. 2_ and _ at home. 3_ by sending and e-mails
5、 _. 1. get headaches or _. 2. dont have enough time _. 3. something on Internet is not _. control the speed and direction find diseases easily control the robots place and cancel orders watch movies do shopping do business communicate chatting online sore eyes to study or exercise true or good 自 学 学
6、 检 测 3 自学指导（四） 1.自学内容：课本第101页-102页1a部分 。 2.自学方法：精读。 3.自学时间：8分钟。 4.自学要求：精读1a，找出关键短语和句子。 自学检测自学检测4 1 根据文章内容填空 2 让学生找出 1a 关键词和短语,分析下面的问题 properly, besides, brought, get, enough Computers have improved our lives, but they have _problems, too. For instance, if we work on computers too long, we may _ head
7、aches or sore eyes. If we play computer games too much, we wont have _ time to study or exercise. _ , not everything we read on the Internet is true or good for us. Computers help us at work and at home, but they must be used _. brought get enough Besides properly 你理解这些问题吗？ 1.There is no doubt that
8、computers are very useful in technology and business. 此句中的no doubt 你理解吗？ 2.The whole world is connected. connected用法是什么？ 3.For instance, if we work on computers too long, we may get headaches or sore eyes. for instance 与such as的区别是什么? 4.besides 与except的区别是什么？ There is no doubt that we will be succes
9、sful. I dont doubt that they will be able to solve the problems. doubt n. & v. 怀疑，疑惑怀疑，疑惑 (2)doubt (vt.)+ 从句 (3)doubt (vi.)+ about / of Doubt is the key to knowledge. There is no reason to doubt of his honesty. I doubt whether/if hell change his mind. 1)doubt (n.) 1.There is no doubt that computers
10、are very useful in technology and business.毫无疑问电脑在技术和贸易业都非常有用。毫无疑问电脑在技术和贸易业都非常有用。 2.The whole world is connected.网络连接了全网络连接了全 世界世界。 connect v. 连接 connection n. 关系，联系 1.connect A with B 使A与B连接 2.connect sth. (to sth.) 使电、气、水等接通 3.connect sb./sth. (with sb./sth.) 与有联系，把联系起来 3 For instance, if we work
11、on computers too long, we may get headaches or sore eyes.比如：比如： 如果我们使用的电脑工作的时间太长，我们就会头昏眼花。如果我们使用的电脑工作的时间太长，我们就会头昏眼花。 for instance =for example 用来举例说明某一论点或情用来举例说明某一论点或情 况，一般只举同类人或物中的“一个”为例。况，一般只举同类人或物中的“一个”为例。 such as 用来列举事物时，一般列举同类人或事物中的几用来列举事物时，一般列举同类人或事物中的几 个例子。个例子。 E.g. （1）Many countries, Japan,
12、for instance (for example), has a lot of earthquakes. （2）I like fruits, such as apples, pears and bananas. (1)besides与与except用于肯定句时，用于肯定句时，except意为“除意为“除之外（不之外（不 再有）”；再有）”；besides意为“除意为“除之外（还有）”。之外（还有）”。 如：如： I have another blue pen besides this one. 除了这支外，我还有另一支蓝色钢笔。（除了这支外，我还有另一支蓝色钢笔。（1+1，共，共2支）支）
13、We all passed the exam except Tom. 我们都通过了考试，汤姆除外。（整体中我们都通过了考试，汤姆除外。（整体中汤姆一人不及格）汤姆一人不及格） (2)except前几乎总有前几乎总有all、any、every、no及其复合词等词。及其复合词等词。如：如： He answered all the questions except the last one. 除了最后一个问题没答外，其余问题他都答了。除了最后一个问题没答外，其余问题他都答了。 (3)except后接名词、代词、动名词和动词原形，这时后接名词、代词、动名词和动词原形，这时except=but； 但但e
14、xcept后跟副词、介词短语时，不能用后跟副词、介词短语时，不能用but代替。代替。如：如： The window is never open except in summer. 这扇窗户从来不开，除夏季外。这扇窗户从来不开，除夏季外。 He did nothing except/ but clean the house. 他只是打扫了房子。他只是打扫了房子。 4 Besides, not everything we read on the Internet is true or good for us.另外，我们在网上看到的东西并不都是真实的、有益的。另外，我们在网上看到的东西并不都是真实的
15、、有益的。 Summary We learn: 1. Some words: doubt, tiny, inside, brain, cancel, connect 2. Some phrases: no doubt, for instance 3. Some sentences: (1) There is no doubt that computers are very useful in technology and business. (2) Computers help us at work and at home, but they must be used properly. We
16、 can: 1. Talk about the importance of computers. 2. Write a composition by using our imagination. 2 Write a short passage with the title with One Day Without Computers. The following information may help you. Suppose you were on a special day in 2030. During the day, there were no computers in the w
17、orld. What trouble would you have? You may begin like this: One Day Without Computers Today, when I got up, I just turned on the computer as usual, but it didnt work. Then I tried my brothers PC, my parents, even my dogs, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today 当堂检测当堂检测 Thank you
