人教版必修二 book2unit3 grammar 语法课课件 36张

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3．这座城市明年将建多少座大楼？ How many high buildings ________________in this city next year? 答案：will be built 4．为了多种一些谷物，很多树被砍掉了。 Large numbers of trees ______________to grow more grain. 答案：have been cut down
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[疑问式]Have/Has ＋主语＋ been ＋done? —Has the door been painted ? 那扇门粉刷了吗？ —No，it hasn't. 不，还没有。 [特殊疑问式 ] 疑问词＋ have ／has ＋主语＋been ＋done
How long has her work been finished ？ 她的工作完成有多久了？
since the 1970s.
3. … I never forget anything I have been told !
4. Since the 1970s, many new applications have been found for me.
5. I have also been put into robots and used to make mobile phones as …
A wrist-worn PC has been invented recently.
A pen-like computer has already been developed.
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The new campus of Qufu No.1 Middle School has already been built .
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II. Translation
1. Two windows have been broken ． 两个窗子被打破了。
2. The car has not been repaired ． 这辆汽车还没有被修好。
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3． ─Have the cars been repaired ？ ─No，they haven ' t．
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The houses have been destroyed by the storm.
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Task1. Presentation
I. Read the sentences from the text, paying attention to the underlined parts. 1.Over time I have been changed quite a lot. 2. …, I have been used in offices and homes
这些汽车修好了吗？ 不，还没有。
4． How long has her work been finished ？
她的工作完成有多久了？
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The Present Perfect Passive Voice
（现在完成时的被动语态）
讲解归纳 1. 构成：
现在完成时
主动语态 have/has done
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3. 现在完成时被动语态的主要用法
1) 表示过去发生的动作对现在造成的影响与结果。 当动词为短暂动词时，可与 already 或yet连用，但 不能与for 或since 引导的表示一段的时间状语连用。 例如： I'm sorry ，but the letters haven't been typed yet. 很抱歉，这些信件还没有被打印出来。 (结果是， 现在还拿不到这些信件 ) The work has already been finished. 工作已完成了。 (结果是，现在不用做这项工作了 )
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2) 表示一个被动的动作或状态开始于过去，持续 到现在，并有可能持续下去，常与 for 或since引导 的时间状语连用，或用于 How long... ？句型中。例 如： The plan has been discussed for nearly 2 hours. 这项计划已被讨论了近两个小时了。 3) 用在时间或条件状语从句中，表示将来某时已 完成的动作，即用现在完成时的被动语态代替将 来完成时的被动语态。 You can go home as soon as your task has been finished. 你的任务一完成就可以回家。
Unit 3 Computers
Period 4 语法专题课
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Lead-in
Are you familiar with these computers? Can you call them?
palmtop
desktop PC
laptop/ notebook
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WW PC
wrist-worn/wearable PC
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Task 2 Test yourself!
Ⅰ. 完成句子 1．由于大雪，高速公路已经被封闭。 The freeway _______________because of the heavy snow. 答案：has been closed 2．对不起，先生，这次展览的门票已经全部卖完 了。 Sorry ，sir ，all the tickets for the exhibition ________________. 答案：have been sold out
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5．我喜欢这部科幻电影，它已经在电视上播了三 次了。 I like this science fiction film and it _____________ three times on TV . 答案：has been broadcast
被动语态 have/hasbeendone
-Baidu Nhomakorabea0-
2. 现在完成时被动语态的各种句式： [肯定式] have/has ＋been ＋done
Your computer has been repaired. 你的电脑已经修好了。
[否定式] have/has ＋not ＋been ＋done
The desks have not been cleaned. 这些桌子还没有擦干净。