人教版九年級上冊英語《Unit 6 Section B 3a-Self Check 》PPT課件

1、 一般過去時被動語態(tài)一般過去時被動語態(tài) 一般過去時的被動語態(tài)表示過去某一時刻發(fā)生的被動一般過去時的被動語態(tài)表示過去某一時刻發(fā)生的被動 性動作性動作, 其基本結構為：其基本結構為： 主語主語+ was / were + 過去分詞過去分詞+ by . The teacher was visited by them two years ago. 他們兩年前看過這位老師。 Revision 主動變被動解題步驟主動變被動解題步驟: : 1. 找賓語找賓語 即動作的承受者即動作的承受者 2. 判斷賓語的單復數判斷賓語的單復數 即即be動詞的單復數動詞的單復數 3. 判斷動詞的時態(tài)判斷動詞的時態(tài) 即即be動

2、詞的時態(tài)動詞的時態(tài) 4. 修改謂語的時態(tài)修改謂語的時態(tài) 即原句動詞改為過去分詞即原句動詞改為過去分詞 5. 修改原句的主語修改原句的主語 即即by + 主語主語/ 賓語賓語 be要隨著主語變要隨著主語變 邏輯主語邏輯主語by來引來引 1. Tom broke the window. The window was broken by Tom. 2. He broke the windows. The windows were broken by him. Warming up Inventions are everywhere in our life 3a Think of something

3、that you do not like to do. Then think of an invention that could help you. Make notes. Problem: _ New invention: _ What it is used for: _ quickly taking notes in class a special pen taking notes quickly 3b Imagine you are a business person. Write a description of your new invention. Try to sell the

4、 invention to the class. This special pen was invented by Liu Jie. It has three colors and is used for This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store

5、a list of common words that you will use. You can program the words you will use often into the microchips Sample writing memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and the short forms will chang

6、e into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to. As you pour in your hot drink, the color changes. Color changing cup Smart and creative inventions You can never chop your fingers off anymore. Smart and creative inv

7、entions Its then safe for young children to eat them. switch plug (斷路插頭) 2012年， 富超穎 (中國) scooter carriage (滑板嬰兒車滑板嬰兒車) 2007年，年， Valentin Vodev (奧地利奧地利) 計算機在我們的生活、工作中的作用越來越大，你知計算機在我們的生活、工作中的作用越來越大，你知 道計算機的起源與發(fā)展嗎？請結合計算機的發(fā)明時間道計算機的起源與發(fā)展嗎？請結合計算機的發(fā)明時間 (1946年）、外形、用途等方面年）、外形、用途等方面,談一下它的發(fā)展變化，并談一下它的發(fā)展變化，并 說明你

8、對未來計算機的暢想。說明你對未來計算機的暢想。要求：要求：1.意思連貫意思連貫,語句通語句通 順順;詞數不少于詞數不少于80。 Computer _ _ _ 這是一篇事物介紹類的說明文這是一篇事物介紹類的說明文，根據題目提示可考慮采用下，根據題目提示可考慮采用下 面的模板。面的模板。 計算機計算機 引出話題引出話題 介紹發(fā)明介紹發(fā)明 暢想未來暢想未來 . important in our daily life. 時間時間:The computer was invented in . 外形：外形：. was huge. 用途用途:send some messages . open . I thi

9、nk computers are going to . Computer Computers are becoming more and more important in our daily life. Do you know when the computer was invented ? The computer was invented in 1946. At that time , it was huge. With the development of science and technology, the computer has grown smaller. Now there

10、 are many kinds of computers, such as personal computers and laptops. The computer is a very useful tool in our life. 【參考范文參考范文】 For example , it can send some messages to foreign friends by e-mail. Whats more , it can share information with others through the World Wide Web. We can also listen to m

11、usic or play the game on computers. It makes us relax. Its hard to imagine what our life would be like without computers. I think computers will be more convenient and they are going to change our life completely in the near future. Self check 1.Complete the passage with the correct form of the word

12、s in the box. invent doubt mention website all of a sudden It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may _ things which are nearly the same. Its hard to tell who came up with the idea first. invent Some inventions can also lead to o

13、ther inventions _. So some people _ whether the inventor came up with the idea himself or herself. They think that the inventor used someone elses idea to create his or her invention. That is why books or _ usually _ more than one inventor when giving information about inventions. doubt websites men

14、tion all of a sudden 2. Rewrite these sentences using the passive voice. 1. Someone stole my watch. 2. They used five eggs to make this big cake. 3. When did they invent the personal computer? 4. They asked us not to run in the hallway. 5. Someone took the video back to the store. Check answers 1. S

15、omeone stole my watch. 2. They used five eggs to make this big cake. 3. When did they invent the personal computer? 4. They asked us not to run in the hallway. 5. Someone took the video back to the store. My watch was stolen (by someone). Five eggs were used to make this big cake. When was the perso

16、nal computer invented? We were asked not to run in the hallway. The video was taken back to the store (by someone). 3. Find out information about an invention you would like to know more about and write sentences below. Invention: When: Who: Purpose: . 填空。 1. The first paper _ (make) in China in 105

17、 AD. 2. For over 500 years the art of making paper _ (limit) to China. 3. In 610, papermaking _ (introduce) into Japan. 4. Kites _ (know) in China about 3,000 years ago. was made was limited was introduced were known 5. Wheelbarrows _ (invent) in the Han Dynasty. 6. Gunpowder _ (discover) by the Chi

18、nese hundreds of years ago. 7. Soccer _ (develop) in England in the 12th century. were invented was discovered was developed II. 按要求改寫下列各句。 1. We planted these trees in 1997. (改成被動語態(tài)改成被動語態(tài)) _ 2. He made a cake yesterday. (改成被動語態(tài)改成被動語態(tài)) _ These trees were planted (by us) in 1997. A cake was made by h

19、im yesterday. 3. The teacher gave the students some advice. (改成被動語態(tài)改成被動語態(tài)) _ 4. He was seen to read a book in his room. (用用I作主語作主語, 改為主改為主 動語態(tài)動語態(tài)) _ 5. She was helped by all the people.(改成一般疑問句改成一般疑問句) _ Some advice was given to the students by the teacher. I saw him read a book in his room. Was she

20、 helped by all the people? . 完成句子。 1. 在在200多個國家中，超過一億人打多個國家中，超過一億人打(籃球籃球)，包括中國。，包括中國。 _ _ _ by _ _ 100 million people in over 200 countries including China. 2. 籃球是由加拿大一位叫詹姆斯籃球是由加拿大一位叫詹姆斯奈史密斯的博士發(fā)明的。奈史密斯的博士發(fā)明的。 Basketball _ _ _ a Canadian doctor named James Naismith. Itisplayedmorethan wasinventedby 3. 人們認為，歷史上的首次籃球賽是在人們認為，歷史上的首次籃球賽是在1891年年12月月21日日 舉舉 行的。行的。 _ _ _ that on December 21st, 1891, the first basketball game in history was played. 4.從那時起，籃球在世界各地的普及程度得到提升。從那時起，籃球在世界各地的普及程度得到提升。 Since then, the p