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视频课题：人教版必修2Book2 Unit 3 Computers The Third Period Learning about language青海省优课
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高中英语人教版必修2Book2 Unit 3 Computers The Third Period Learning about language青海省优课
Book 2 Unit 3 Computers
The Third Period Learning about language
Teaching goals 1. Target language
a. Important words and phrases
revolution network simplify calculate mobile solve explore totally anyhow finance b. Important sentences
Over time I have been changed quite a lot.
First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.
Over time my memory has developed so much that, like an elephant, I never forget anything I have been told!
Since the 1970s many new applications have been found for me.
I have also been put into robots and used to make mobile phones as well as help with medical operations.
I have even been put into space rockets and sent to explore the Moon and Mars. 2. Ability goals
Learn the present perfect passive voice 3. Learning ability goals
Let students learn how to use the present perfect passive Teaching important points
a. Students can read and master these new words b. Students can use these words fluently. Teaching difficult points
a. The use of the present perfect passive
b. Student can know how to change the sentence into the present perfect passive. Teaching methods
Teach words in real situations, corporation, discussion. Teaching aids A media
A blackboard.
Teaching procedures & ways Step I Revision
Check the words and phrases
T: To show some words on scream, give students two minutes to find the answer. I will spent three minutes to ask students answer the following questions: “revolution” It means complete change in ways of thinking, working; “network” It means connected computer system;”simplify” It means to make things easier; “calculate” means to find the answer using numbers; “mobile” means able to be moved easily from place to place; “solve” means to work out the answer to a problem; “explore” means to travel around an area to find out about it. “totally” means completely; “anyhow” means anyway; “finance” means activity of managing money.
T:I will spent five minutes in this part. Students may have some trouble in these words, just like “revolution” “calculate” “simplify”. I will pay more time on these words, and explain them again. Such as: reality. n. → real. adj.→ realize. vt. ; explore. vt. → explorer. n. → exploration. n; simplify. Vt. → simplification. n.→simple.adj.→simply.adv. Students must know about them that will be appeared in the final exam.
T: Now please open your books and turn to Page 20
First let’s learn about language. They’ve learnt the words in this unit to fill in the blanks. Complete the sentences with suitable words in correct forms.( This part need corporation, two people as a group to complete the sentences with suitable words. I will spend six minutes in this part. ) StepⅡ. Word study
This part is a consolidation of the words learnt in this unit. Ask the Ss to do the exercise independently. I will show so many words and exercises in the scream. I will spend twenty minutes in this part. StepⅢ. Grammar
The student will learn the use of the present perfect passive. First try to make clear to
the student what the present perfect passive is, with the help of the practice in Step III. Then give them some examples. At last get them to summarize the rules of the present perfect passive.
T: In this part, we are to learn the use of the present perfect passive. We will use more examples to show the present perfect passive.
概念：主动语态表示主语为动作的执行者；被动语态表示主语为动作的承受者。现在完成时的被动语态强调过去的动作对现在造成的影响或结果，但主语为动作的承受者，表示“……已经被……”。
如：The new school has been set up. 新学校已经建成了。
形式：
现在完成时的被动语态的肯定式为：have/ has +been +done。
如：The experiment has been done successfully. 这个实验做得很成功。
现在完成时的被动语态的否定式为：have/ has +not +been +done。 如：Tom’s novel has not been published. 汤姆的小说还没有被出版。
现在完成时的被动语态的一般疑问句需将have /has提到主语的前面。 如：Has his bike been repaired? 他的自行车修好了吗?
现在完成时的被动语态的特殊疑问句为：疑问词+have /has +been +done? 如：Who has been invited? 谁受到了邀请?
Step Ⅳ. Practice
1.主动：他已经收到了信。 He has received the letter already.
被动：他封信已经被他收到了。 The letter has been received by him already. 2.我们已经做了一个计划。 We have made a plan.
一个计划已经被我们做了。 A plan has been made by us. 巩固练习
1. Paper money for over a thousand years. A. used B. has been used C. has used D. is using
2. Great changes, in my hometown and you can see a lot of factories . A. have been taken place; are being set up B. have taken place; have been set up C. are taken place; had been set up D. had taken place; will be set up
3. Come and sit down by the fire. Your hands cold. A. have been felt B. feel C. are felt D. have felt 4. The fire to the fifth floor. all the people ? A. has got; Have; been saved B. has been got; Have, saved C. has got; Do; save
D. has got; Have; saved
5. —We want to sit at the table near the window. —I’m sorry, but it already.
A. has taken B. took C. was taken D. has been taken
Now please turn to page twenty-one, let’s finish exercise two. Change the following sentences into the present perfect passive voice.
1. My friend has bought a new personal computer. 2. The shop has repaired my computer very quickly. 3. An unknown virus has just attacked my computer. 4. We have not solved the problem yet.
5. The company has given its computers away to a local school. 6. The scientists have developed a kind of intelligent robot.
Step V. Homework
1. Please finish the exercises three on page twenty.
2. Look at exercise three ,read the poem aloud, paying attention to the rhythm and intonation. Then write your own poem.
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