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1、Unit 4 Amazing Science Topic 3 China is the third nation that sent a person into space.,Section D,Grammar,概念： 1.在句子中修饰名词或代词，定语从句在句 中充当定语。 2.定语从句必须有先行词，并尽量靠近先行 词。 3.在定语从句中，关系词在从句中充当成 分。 关系代词 指人: who(主格，宾格) 指物: which(主格，宾格) 指人或物: that,Review,1.I know the boy. He can speak English well. I know the boy
2、who/that can speak English well. 2.Mary bought a little bird. It was very pretty. Mary bought a little bird that/which was very pretty. 3.The season is summer. It comes after spring. The season is summer which/that comes after spring. 4.I know the boy. You are looking for him. I know the boy who/tha
3、t you are looking for.,Exercise,Change the following sentences into attributive clause.,Functions,Fill in the blanks.,1. It _(prove) that China has made great progress in its space industry. 2. They spent 2.5 hours _ (explore) and collecting soil and rocks to take back to earth. 3. I advise you to d
4、iscover new ways to make computers _(serve) us better. 4. The whole world is _(connect) by the Internet. 5. Spaceships which now _(main) use electronic controls used to be controlled by astronauts.,proves,exploring,serve,connected,mainly,Exercise,Talk about the advantages of the computer.,Talk about
5、 the disadvantages of the computer.,Do you like robots? Why or why not? If you had a robot, what would you like it to do for you?,1b Find the words in the passage according to the following meanings. The first letter is given to help you.,1. to tell somebody about danger or about something bad that
6、may happen 2. to make something happen or appear 3. a person who is paid to do housework for a family 4. sure and confident, without any doubts 5. used to say that something may be true, but you are not sure,1.w_2.c_3.s_ 4.c_5.p_,arn,ause,ervant,ertain,erhaps,1. No one knows for certain, but most pe
7、ople think that robots will be part of our lives.没有人清楚，但是大部分人都认为机器人会成为我们生活的一部分。 certain adj. 1.只作表语确凿的，无疑的，可靠的 2.只作表语，后跟动词不定式或 of, that一定的，必然的，有把握的，确信的；一定会来到或发生的 3.只作定语某，某一(些)；相当的，一定程度的；一些，有点儿，某种 4.习惯用语 be certain of 确信，深信 be certain to 必然；一定 be not certain whether. 不能确定是否 for certain 肯定地，确凿地 make c
8、ertain (of, that) 把弄清楚，把弄确凿， 保证,Language points,2.In a few years, perhaps robots will think on their own, just as people use their brains and act for themselves.多年以后，也许机器人会有自己的思想，就像人们使用自己的大脑和自己行动一样。 on ones own 独自，单独 3.One scientist warns that if robots start to think for themselves, they will no lo
9、nger want to be our servants, but our masters.曾有科学家警告，如果机器人开始自我思考，他们将不再愿意成为我们的仆人，而是想成为我们的主人。 warn sb. (not) to do sth.警告某人（不要）干某事 warn sb. about sth.提醒、警告某人注意某事 warn sb. against (doing) sth.警告某人某事,Language points,v.警告,Key Words,for certainbe part ofbe friendly so farcauseall the time be surprised at
10、on ones own think for oneselfwarn no longertreat as betweenand,Retell it,1c Read 1a again and discuss the questions with your partner.,1.Do you think robots will be part of our lives in the future? Why? 2.Robots are considered to be our servants, arent they? 3.Do you think robots can think or act fo
11、r themselves? 4.Why does the title have a question mark ?,No one knows for _ what our future will be like, but most people think that robots will be part of our _. So far, robots havent _ us any problems. They work for us like _ all the time. They help us do _ and difficult work. People are _ at the
12、 rapid development of robots. In a few years, perhaps robots will think on _ own, just as people use their brains and act for themselves. However, once robots can think for themselves, problems may appear. One scientist _ that if robots start to think for themselves, they will no _want to be our ser
13、vants, but our masters. They _ treat us as we now treat our pets.,Exercises,long, they, surprise, cause, certainly, live, servant, danger, warn, may,certain,lives,caused,servants,dangerous,surprised,their,warns,longer,might,Fill in the blanks.,Theres _ _(无疑地) that China has made great progress in it
14、s space industry. _(微型的) novels are very popular with children. The flight was_(取消)because therell be a heavy fog above the airport. Spaceships can travel to other planets. _(除以外), humans have built space stations. 5. No one knows _ _(确切地), but most people think that robots will be part of our lives
15、. 6. Perhaps robots will think _ _ _(独自，单独)in a few years.,no doubt,Tiny,canceled,Besides,for certain,on their own,Exercises,Making a Wall Newspaper About Computer Information 1. Collect the following information from books, newspapers, the Internet and so on. the parts of the computer the kinds of
16、computers the development of the computer 2.Discuss the uses of computers in daily life and technology in groups. 3.Design a wall newspaper about the computer.,Project,Summary,We learn: 1. Some words: certain, warn, might, housework 2.Some phrases: for certain, on ones own 3.Some sentences: (1)No on
17、e knows for certain, but most people think that robots will be part of our lives. (2)In a few years, perhaps robots will think on their own. We can: 1.Summarize the usage of Attributive Clause. 2.Learn about some knowledge of robots.,Read 1a. Memorize the useful expressions and key sentences which we learned in this topic. Finish Section D in your workbook.,Assignment,Thank you,