Unit 3 The Internet Discovering Useful Structures 导学案(无答案)-2024-2025学年高中英语人教版(2019)必修第二册

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名称 Unit 3 The Internet Discovering Useful Structures 导学案(无答案)-2024-2025学年高中英语人教版(2019)必修第二册
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更新时间 2024-12-30 09:53:17

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B2 Unit 3 Discovering Useful Structures导学案
【Learning Objectives】
In this class, students will:
1. identify and summarize the form and the functions of the present perfect passive voice.
2. compare the present perfect passive voice with the active and change the active form into the passive form.
【预习案】将下列句子变成被动语态。
1. Many people around the globe speak Chinese now.
2. Someone stole my bike yesterday.
3. We will finish the report by tomorrow.
4. Hunters are hunting African elephants every year.
5. The Internet has greatly improved Jan's life.
【探究案】
1. 现在完成时的结构
主动式 被动式
肯定式
否定式
一般疑问句
特殊疑问句
2. 主动语态变为被动语态的原则
三变:原句主语;宾语;谓语
三不变:原句意思、时态和主谓宾以外的部分
3. 将下列句子变为被动语态。
They look very happy because they have solved the difficult problems.
____________________________________________________________________________
Scientists have made a new robot which can walk and talk like humans.
____________________________________________________________________________
The government has spent a lot of money on the Hope Project.
____________________________________________________________________________
Has the school sent them abroad to study English
____________________________________________________________________________
Who has the host invited
____________________________________________________________________________
现在完成时的被动语态
定义:
1. 表示动作已经被完成,或截止到现在,与since+过去时间,so far/up to now/by now到目前为止, recently/lately最近, for three days,over the years, in the past ten years在过去的10年里,over the last two months在过去的两个月里,等时间状语连用;
eg. The child has been taken care of by his grandma over the years.
eg. The software has been downloaded to help my phone battery last longer.
eg. First as a PC and then as a laptop, a computer has been used in offices and homes since the
1970s.
Tips注意事项:
① 由finish, buy, start, begin, post, return, borrow, marry, open等词构成的现在完成时的被
动语态, 不能与表示段时间的状语,如for four days, how long等连用,而要改换动词或时
态。
判断正误:
* How long has this book been bought ( )
* How long ago was this book bought ( )
② 短语动词不能分割,而且不能省略短语动词中的介词或副词。
判断正误:
*The patient has been taken good care. ( )
*The patient has been taken good care of. ( )
③ 并不是所有的动词都有被动语态。如happen, occur, take place, break out, belong to, cost,
last等不及物动词或词组,就没有被动语态。
判断正误:
*Some of the best conversations have ever happened around the dinner table. ( )
*Some of the best conversations have been happened around the dinner table. ( )
④双宾语动词变被动语态可将其中的一个宾语变为主语, 另一个保留不动。
主动: I have given him the key.
被动: He has been given the key.
被动: The key has been given to him.
⑤ 带复合宾语的动词变被动语态时, 只能将宾语变为主语, 原来的宾补保留不动, 改成
主语补足语。
主动: I have asked her to help you.
被动: She has been asked to help you.
⑥ 主动语态中作宾语补足语的不带to的不定式,变为被动时,要加上to。
主动:The engineer made the robot clean the windows of the tall building.
被动:The robot was made to clean the windows of the tall building.
【堂练】单句语法填空
1. The construction of the new railway lines _________________ (finish) by now.
2. A new library and a gymnasium _______________(build) in our school this year.
3. A great many fine cars _______________ (produce) since the technological revolution.
4. Up to now, more and more problems about children (pay) attention to. We find it common that parents and children lack communication.
5. With the help of high technology, more and more new substances (物质) (discover) in the past years.
6. The new technology, which (apply) to rice growing since it was created, is increasing the grain output.
7. So many things (do) to save the local wildlife, such as setting up reserve and making laws.
8. It (prove) that this medicine is effective.
9. Over time a computer’s memory ______________ (develop) so much that, like an elephant, it never forgets anything I _______________(told).
10. In recent years, a global campaign ______________ (launch) by the Space Agency to
promote further development of the manned aviation.
把下列句子变成被动语态
1.Grandma has taken good care of the children all these years.
The children                     by Grandma all these years.
2.The volunteers have planted thousands of trees along the river in the past few days.
Thousands of trees                along the river in the past few days.
3.They have translated the book into more than twenty languages.
The book                into more than twenty languages.
4.To their joy, they have solved the difficult problem all by themselves.
To their joy, the difficult problem                all by them.
5.The boss has appointed Tom manager of the engineering department to take the place of George.
Tom         manager of the engineering department to take the place of George.
6.Unfortunately,with the development of industrialization, the factories have polluted the environment.
Unfortunately, with the development of industrialization, the environment            
     by the factories.
【课后作业】语法填空
China has developed a unique festival food culture throughout the years. Eating dumplings is a common folk custom for many Chinese on the day of winter solstice(冬至), especially people 1.      live in the north.
When midwinter comes, vital movement begins to decline and calm down. In this period,
2.      eaten in a right amount, some nuts such as peanuts, walnuts, and chestnuts are good for one’s body.
People in Suzhou, Jiangsu Province, are accustomed to eating wontons in midwinter. According to 3.___________ old story, during the midwinter feast 2,500 years ago, the King of Wu 4.     (be) fed up with all kinds of costly foods and wanted to try 5. (variety) of things. Then, the beauty Xishi made wontons to honour the king’s wish. He ate a lot and liked the food very much. Later, the people of Suzhou had wontons to celebrate the festival 6. (official).
In places such as Shanghai, people eat tangyuan, a kind of small dumpling balls 7.     
(produce) with sticky rice flour (粉). In Yinchuan, Ningxia, people call midwinter the “Ghost Festival”. On that day, it is customary for people there to eat mutton soup with the dumplings in it. They give the midwinter soup a strange name and call it “brain”, which they usually share with 8.      (they) relatives.
People in Taiwan keep the custom of providing nine-layer cakes 9.      their ancestors. People from the same family gather at their ancestral temples to adore their ancestors in order of their ages. After 10. (hold) the sacrificial ceremony, there is always a grand dinner.
反思总结
本节学到了哪些知识?
1.现在完成时被动语态的定义和结构
2.现在完成时被动语态的用法和注意事项