Unit 4 Topic 3 Section C 课件 2.ppt

1、Unit 4 Amazing Science,Topic 3 China is the third nation that sent a person into space. Section C 课件 2,The importance of computers,Read the article silently then answer:,Is everything we read on the Internet true or good for us?,Read 1a again and finish the task below:,Mark T(True) or F(Flase).,(1)C

2、omputers were invented in China in the 1950s.( ) (2)Robots are controlled by human brains.( ) (3)Computers are only used to place orders.( ) (4)People communicate by sending e-mails and chatting online.( ) (5)Everything we read on the Internet is true and good for us.( ),F,F,F,F,T,Find the topic sen

3、tence of each paragraph while listening to 1a.,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 t

4、hey have brought problems, too.,Complete the following diagram.,computers,usage,problem,work,daily life,_ of a spaceship. help doctors _. _ in factories. help businessmen _.,play games and _. _ and _ at home. _ by sending e-mails and _.,get headaches or _. dont have enough time _. something on Inter

5、net 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,1. This is the gentleman who helped me out of the trouble.,2. The building which

6、stands near the river is our school.,3. Do you know the boy whose bicycle was broken just now?,4. The farm (that)we visited last Sunday was located in the suburbs of Beijing.,定语从句,概 念,什么是定语从句： 在复合句中，修饰某一名词或代词的从句叫定语从句。其作用是修饰主句中的某一名词或代词，修饰的名词或代词叫先行词。 e.g. Do you know the man （who came to see Xiaowang

7、this morning? ）,定语从句放在先行词之后，先行词由关系代 词或关系副词 引导，关系词放在它们中间。 关系代词：who, whom, that, which, whose 关系副词：when, where, why e.g. 1. He is a man whom we should all learn from. 他是一个我们都应当学习的人 2. I still remember the day when I first came to 定语从句的翻译。,要 点：,注 意：,定语从句（2）引导定语从句的词叫关系代词以及关系副词,关系代词:,1. who指人,作主语或宾语 (作宾语

8、可省略）,The man who I talked with is our teacher.,A person who steals things is called a thief.,2. whom指人,作宾语 (作宾语可省略,如介词提前则不能省),The man (whom/who) I nodded to is Mr. Li.,The man to whom I nodded is Professor Li.,3. which 指物，作主语或宾语 (作宾语可省 略, 如介词提前则不能省),These are the trees which were planted last year.,

9、This recorder （which） he is using is made in Japan.,Is this the library (which) you borrow books from?,Is this the library from which you borrow books?,4. that 指人/物，作主语或宾语 (作宾语可省略）,A plane is a machine. It can fly.,A plane is a machine that can fly.,He is the man. I told you about him.,He is the man

10、 (that) I told you about.,Whose的用法,指人或物，表示所属关系,I dont want to hire the boy whose father is now in prison. Look at the house whose roof is red.,That & which,下列情况中只能使用 that,1 先行词是everything, anything等不定代词或是all, much, few, little以及被其修饰,Everything that can be done has been done. There are few books we c

11、an read.,2 先行词被the only, the very, the last, the very及序数词修饰,This is the only food that I can find for you. His composition was the second one that was handed in.,3 先行词被形容词或副词的最高级修饰时,This is the most interesting film that I have ever seen.,4 先行词人物共存时,They talked for half an hour of things and persons

12、 that they remembered in the school.,下列情况中只能使用 which,a) 引导非限定性定语从句时。例如： （错）The tree, that is four hundred years old, is very famous here. 改正：that改为which.,b) 介词后不能用that。例如： We depend on the land from which we get our food. 我们依赖土地获得食物。,The man to whom I nodded is Professor Li.,如果介词提前，作宾语的关系代词不能省略,指物，只

13、用 which 指人,只用whom,Is this the library from which you borrow books?,Is this the library (which) you borrow books from?,The man (whom/who) I nodded to is Mr. Li.,2介词+关系代词,Prep + which/ whom,The chair on which she is sitting is made of plastics.,The woman to whom you talked just now is a famous singer.

14、,Your speech was heard by a group of five judges, all of whom agreed that it was the best one this year. I called him by the wrong name, for which mistake I should apologize.,刚才与我们校长谈话的那个人是我们的英语老师,1The man to whom our headmaster talked just now is our English teacher.,2 The man whom our headmaster t

15、alked to just now is our English teacher.,3The man who our headmaster talked to just now is our English teacher.,4The man that our headmaster talked to just now is our English teacher.,5The man our headmaster talked just now is our English teacher.,Exercises,The house _ we live in is very old. Those

16、 are the shoes _ I lost last week. That is the man _ found my handbag. Lucy cant eat food _ has chocolate in it. The car _ my uncle bought last month is very beautiful.,which/ that,which/ that,who/ that,which/ that,which/ that,6. The village _ Guo Peng lives in is very far away. 7. The boy _ is wear

17、ing the black jacket is very clever. 8. I hate people _ talk much but do little. 9. The detective found the thieves _ robbed the Bank of Hawaii. 10. My aunt works in a university _ has over five thousand students.,which/ that,who/ that,who/ that,who/ that,which/ that,Fill in the blanks.,Theres _ _(无

18、疑地) that China has made great progress in its 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. 6. Perhaps robots will think _ _ _(独自，单独)in a few years.,no doubt,Tiny,canceled,Besides,for certain,on their own,Summary,We learn: 1. Some words: doubt, tiny, inside, brain, cancel, connect 2. Some phrases: no doubt,