人教版高中英语必修二 unit 3 computers grammar
英语必修二人教版 Unit3 Computers2.3+grammar
3.He walked to work in the past few years. He has walked to work in the past few years. He walked to work in the past.
4. ---- How long ____ at this job? ---- Since 1990. A. were you employed B. have you been employed C. had you been employed D. will you be employed
5. When and where to go for the onsalary holiday ____ yet.
现在完成时和一般过去时的区别
★现在完成时强调过去的动作对现在有影响；一般过去时
只表示过去某个具体时间里发生的动作，与现在没有联系。
Jane left an hour ago . Jane has left now.(她现在已经不在这里了。)
★两者都可表示过去开始并延续了一段时间的动作，但现
在完成时表示动作可能还要继续下去，而一般过去时则说 明动作已经结束。
Complete the following sentences：
1. 脏衣服都已经洗了。
The dirty clothes___h_a_ve__b_e_e_n_w__a_s_h_e_d_. ____. 2. 这项计划已经由专家改动过三次了。 The plan__h_a_s__b_e_e_n_c_h_a_n_g_e_d___by the experts for three times. 3. 我的电脑很快就被修理好了。 My computer _h_a_s_b_e_e_n__re_p_a_i_re_d__very quickly. 4. 这个问题还没有解决。 The problem __h_a_s_n_o_t_b_e_e_n__s_o_lv_e_d___yet.
Unit 3 Computers教学设计 ( 人教高中英语必修2)
Unit 3 Computers本堂课包括Warming up 和 Reading 两部分。
他们是语言知识和文化意识的输入过程；是语言技能、情感态度和学习策略的培养过程，也是语言输出过程。
在整个教学过程中，它是培养学生阅读能力的主要过程，教学重点是阅读技能的培养、交际能力及情感态度的提升。
Warming up 部分根据每个人对电脑的看法不同让学生就“Do you like computer?”进行小组探究和讨论，从自身实际出发谈论自己的看法，有助于激发学生对于整个单元的学习兴趣。
Reading 部分（Computers ）主要讲述的是电脑的发展史，通过一系列问题的设置让学生能够在全面理解文章的基础上提高信息处理、加工和学习的能力。
Knowledge objectives:掌握以下词语和句型：Calculate, sum, solve, simplify, artificial, intelligence, revolution, reality, totally, application, finance, in common, over time, as a result, from···on, so···that. Ability objectives:训练学生一定的阅读技巧，使他们掌握一些有效的学习策略，从而提高阅读速度和篇章理解的准确性，并养成一定的自主学习能力；培养学生快速阅读的能力、捕捉信息的能力及运用语言进行交际的能力。
Emotion objectives:通过对“computer”的学习，启发学生思考电脑给我们带来的影响，从而以一种正确的方式利用电脑和网络资源；另外通过电脑的发展历程让学生意识到科技对生活的影响。
1. 教学重点：1.了解计算机的发展过程，进一步认识计算机的演变以及对人类的影响。
2.训练学生的阅读技巧，提高学生阅读速度和理解能力。
高中英语：Unit 3 Computers Grammar(新人教必修2).pptx
8. Every possible means
to prevent the air pollution.
A. is used
B. are used
C. has been used
D. have been used
9. No permission
for anyone to enter the building.
C. isn’t being decided
D. aren’t decide
学海无涯
第 3 课时 Grammar 基础练习 1. have been used 2. have been told 3. have been found 4.have been put into
单项选择 1-5 CABDB 6-10 DBCAD 句型转换 1.as well as 2.as, went 3.so that 4.have been written 5.such strong that 单句改错 1.given 后面加to 2.offer 后面加 to 3.just 后面加 been 4.were 改 成 have been 5.去掉 been
B. had ruined D. had been ruined Beijing says that all
construction work for the Beijing
by 2006.
A. has been completed B. has completed
C. will have been completed
3. Great changes
in the city, and a lot of factories
.
A. have been taken place have been set up
人教版高中英语必修二Unit 3 Computers( grammar)(共23张PPT)
Group-work round 2
Computer games have been regarded as a waste of time.
Group-work round 2
It has been wellknown that teachers can help you with your study.
---- Great. Isweanntt etonsceee PpearstotnealrTnasilor.
---- I'm afraid it _h_a_s_n_o_t_b_e_e_n_s_h_o_w_n___(还没上
映) yet.
----SHtohw. ahbaovuet/thhaesFibreesetnordmo?nH_e_a(_sb_iyt_..b_.)e_e_n_s_h_o_w_n （S它th上.映ha了v吗e/）hyaest?not been done
Have fun!
Look around carefully. Close your eyes. Someone will make some changes in the classroom. Check what has been changed.
Group-work
Round 1
Group-work
Lead-in
The similar jacket to Kimi has been sold on the internet.
Present
• The programme has been broadcasted since November.
• The five children have been educated through the game.
人教版高中英语必修二课件Unit3Computers——grammar课件
bought thisFbike for almost four years.（改错） HowT long has this book
been bought（判断正误）
（4） 带有双宾的词，如__g_i_v_e,_,s_e_n_d_,b,_ri_n_g_， __ta_k_e_,_te_a_c_h,,_te_l_l_,w__r,i_te_,_b_u_y,p_a_y___等，变为被动语 态时，将其中一个宾语变为主语，其他借助介词 to 或者for。 【学以致用】The teacher has given twins a book. （用被动时态对句子进行改写）
Their photos have been made fun of by the netizens.
现在完成时被动态结构：
have /has +been +过去分词
时间状语 现在完成时常与already ,yet recently ,so far ,by now, up till now ,since .....,before......等连用
had been done
过去将来时
would be done
一般将来时
will be done
现在完成时
have/has been done
歌诀是：被动语态be字变，过去分词跟后面。
ห้องสมุดไป่ตู้
现在完成时态
定义：现在完成时的动作或情况虽然发生在
过去，但它强调的是与现在的关系，用来说 明现在的情况。 现在完成时态结构：(have/has + 过去分词)
思
The programme has been broadcasted since November.
高中英语Unit3ComputersPeriodFourGrammar—ThePresentPerfectPassiveVoice练习(含解析)新人教版必修2
PeriodFour Grammar—ThePresentPerfectPassiveVoice感知以下课文原句，完成方框下的小题1．Over time I have been changed quite a lot.2．First as a PC (personal computer) and then as a laptop，I have been used in offices and homes since the 1970s.3．Over time my memory has developed so much that，like an elephant，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 well as help with medical operations.1．以上几句中所使用的时态和语态是现在完成时的被动语态。
2．现在完成时的被动语态的构成为：have/hasbeen＋过去分词。
现在完成时的被动语态表示到现在为止某事已经被完成或被做。
这种语法项目既要表示现在已经完成又要表示被动的含义，因此很多同学在具体运用当中容易顾此失彼，难以把握。
运用现在完成时的被动语态时应掌握以下几个问题：1．构成现在完成时的被动语态的构成为：have/hasbeen＋过去分词。
2．各种句式肯定式主语＋have/hasbeendone...否定式主语＋have/hasnotbeendone...一般疑问式Have/Has＋主语＋beendone...？特殊疑问式特殊疑问词＋have/has＋主语＋beendone...？3.使用的场合(1)表示一个被动的动作发生在说话之前，强调对现在造成的影响或结果。
【人教版】必修二 unit 3 computers grammar优质课件
【人教版】必修二 unit 3 computers grammar优质课件
【人教版】必修二 unit 3 computers grammar优质课件
Great changes ______B__ in the city , and a lot of
A pen-like computer has already been developed.
Can you make more sentences similar to the sentences above? “have/has been done ?”
?
【人教版】必修二 unit 3 computers grammar优质课件
【人教版】必修二 unit 3 computers grammar优质课件
【人教版】必修二 unit 3 computers grammar优质课件
1. ------HSoinwcleo1n9g9_0_.B___ at this job?
A. were you employed B. have you been employed
The buildings; destroy ; earthquake
【人教版】必修二 unit 3 computers grammar优质课件
Discovering: Do the underlined parts have
something in common? 1. A calculating machine has been replaced with
• 三、 巩固练习
1.－How many times______ not to play with fire?
高中英语Unit3ComputersSectionⅢGrammar_现在完成时的被动语态教案含解析新人教版必修2
Section Ⅲ Grammar—现在完成时的被动语态语法图解探究发现①Over time I have been changed quite a lot.②Since the 1970s many new applications have been found for me.③The important problem has been discussed for nearly two weeks.④The ink has not been removed from the clothes.⑤Haven't your problem been solved?⑥How many buildings have been built in your school?[我的发现](1)以上例句中都使用了现在完成时的被动语态。
(2)以上例句中第①②③句是该时态的肯定句式；第④句是否定句式；第⑤句是一般疑问句式；第⑥句是特殊疑问句式。
一、结构Already this year, 115 measles cases have been reported in the USA, compared with 189 for all of last year.(2017·北京高考)今年美国已经报告了115例麻疹病例，而去年全年共189例。
The construction of the bridge has not been finished.桥的建设还没有完成。
Has the date for the next meeting been decided?下次会议的日期已决定了吗？How long has the battery not been changed?电池多久没有更换了？[即时演练1](1)变换句子The children have already been told the good news.①将上面的句子变为否定句。
人教新课标必修二英语Unit 3Computers【教学设计】
Unit 3 Computers本堂课包括Warming up 和Reading 两部分。
他们是语言知识和文化意识的输入过程；是语言技能、情感态度和学习策略的培养过程，也是语言输出过程。
在整个教学过程中，它是培养学生阅读能力的主要过程，教学重点是阅读技能的培养、交际能力及情感态度的提升。
Warming up部分根据每个人对电脑的看法不同让学生就“Do you like computer?”进行小组探究和讨论，从自身实际出发谈论自己的看法，有助于激发学生对于整个单元的学习兴趣。
Reading部分（Computers）主要讲述的是电脑的发展史，通过一系列问题的设置让学生能够在全面理解文章的基础上提高信息处理、加工和学习的能力。
Knowledge objectives:掌握以下词语和句型：Calculate,sum, solve, simplify, artificial, intelligence, revolution,reality, totally, application, finance, in common, over time, as a result, from···on, so···that. Ability objectives:训练学生一定的阅读技巧，使他们掌握一些有效的学习策略，从而提高阅读速度和篇章理解的准确性，并养成一定的自主学习能力；培养学生快速阅读的能力、捕捉信息的能力及运用语言进行交际的能力。
Emotion objectives:通过对“computer”的学习，启发学生思考电脑给我们带来的影响，从而以一种正确的方式利用电脑和网络资源；另外通过电脑的发展历程让学生意识到科技对生活的影响。
1. 教学重点：1.了解计算机的发展过程，进一步认识计算机的演变以及对人类的影响。
2.训练学生的阅读技巧，提高学生阅读速度和理解能力。
人教版必修二Unit 3 Computers Grammar
一、现在完成时的被动语态的构成 have/has＋been＋及物动词的过去分词 二、现在完成时的被动语态的形式 1．肯定式：主语＋have/has＋been＋及物动词的过去 分词\＋其他。 The problem has already been solved.问题早已解决。 2．否定式：主语＋have/has ＋not＋been＋及物动 词的过去分词＋其他。 They haven't been told the exciting news yet. 他们还没有被告知这个令人兴奋的消息.
2.现在完成时被动态： have / has + been + 动词过去分词
现在完成进行时：
have / has + been + 动词现在分词 1.The child has been taken care of by Grandma Wang all these years.
这些年来, 这个小孩一直由王奶奶照料。
6. I got caught in the rain and my suit .（北京 2007） A. has ruined B. had ruined C. has been ruined D. had been ruined 7. Professor James will give us a lecture on the western culture, but when and where ___ yet. （浙江 2007） A. hasn’t been decided B. haven’t decided C. isn’t being decided D. aren’t decided
The carrots are going to be eaten (by the rabbits).
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revision 一般将来时被动语态 (Future Passive Voice)
构成形式:
Will/shall +be + V过去分词
现在完成时的被动语态
现在完成时的被动语态的用法 1.表示一个被动的动作发生在说话之前,强调对
现在造成的影响和结果.
The door has been locked. 2.表示一个被动的动作或状态开始于过去,持续
到现在,并可能持续下去,常与for 或since引导 的时间状语连用,或用于How long...?句型中.
We are going to hold a meeting on Saturday afternoon. A meeting is going to be held (by us) on Saturday afternoon.
The twins are to repair the machine tomorrow.
The important problem has been discussed for nearly two weeks.
How long has the machine been used?
现在完成时的标志:recently /already/yet for+一段时间 /since+时间点
句型
A pen-like computer has already been developed.
Can you make more sentences similar to the sentences above? “have/has been done ?”
?
A calculating machine; replace A calculating machine has been replaced with the laptop.
The buildings have been destroyed in an earthquake.
The buildings; destroy ; earthquake
Discovering: Do the underlined parts have
something in common? 1. A calculating machine has been replaced with
The machine is to be repaired (by the twins) tomorrow.
The host will give the winner a computer as the prize.
获胜者将被赠予一台电脑作为奖励. The winner will be given a computer as the prize (by the host). 一台电脑将被赠给获胜者作为奖励. A computer will be given (by the host) to the winner as the prize.
the laptop.
2.The buildings have been destroyed in an earthquake.
3. The sports meeting has already been held in our
schoolh. as/have been done
现在完成时 被动语态
Great changes ______B__ in the city , and a lot of
factories ________. A. have been taken place ; have been set up B. have taken place; have been set up C. have taken place; have set up D. were taken place; were set up
Lead-in
Are you faml them?
palmtop
desktop PC laptop/ notebook
WW PC
wrist-worn/wearable PC
A wrist-worn PC has been invented recently.
1.They hnaovt ehnaovet finished the homework which should be finished yesterday.
2.DHoaessththeennewewprporgorgarmam have been developed for the robot?
He has been sent to study the new technology in the
company. 否定句: 在have /has 后加not He has not been sent to study the new technology in
the company. 一般疑问句: have /has 提前
Has he been sent to study the new technology in the
company? 特殊疑问句: 疑问词+have (has)+主语+been+ V过去分词.+...?
Where has he been sent to study the new technology?
shall 用于第一人称: I /we , will 用于任何人称
否定句: 在will/shall后+not 一般疑问句: 把will /shall 提前
be going to be +V过去分词 be to be +V过去分词
The students of class one will clean the playground. The playground will be cleaned by the students of class one.