Unit3 The Internet Discovering课件高中英语人教版(2019)必修第二册
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help feel less lonely and bored, join an online group where she could talk about her problems and get support and advice from others
Social use Learning
（help) in our teaching by a lot of information from the Internet. Also, a new computer room
_h_a_s__b_e_e_n_s_e_t_u__p__ (set up) in our school. We hope you will be happy with this exciting new development in our school.
人教版(2019)必修第二册 Unit3 Internet
Discovering Useful Structure
Learning objectives:
After learning this class, you’re able to... 1. learn the form of Present perfect passive voice. 2. know how to use Present perfect passive voice in a specific situation. 3. Write a blog to discuss the advantages and disadvantages of Internet.
提示
常与现在完成时连用的时间状语有：
already 已经 recently/lately 最近 ever since 自那以来 so far 迄今为止 for a long time 很长一段时间 in recent years 在最近几年里 in/during/over the past/last years 在过去的几年里
future
The students have cleaned the classroom.
现在完成时 The classroom has been cleaned. You needn’t
passive clean it now.
表示说话时已经完成的被动性的动作或结果，主语是动作的承受者。
Talk about something that has been done
technical equipment and advice which__h__a_s_b_e_e_n__p_r_o_v_id_e_d___（provide) by the City
Information Technology Centre. Every teacher_h_a_s__b_e_e_n_p__ro_v_i_d_e_d__（provide) with a laptop
主语+have/has been done... 主语+have/has not been done... have/has+主语+been done...? 疑问词+have/has+主语+been done...?
Activity 1
现在完成时的被动语态的用法 The letter has been posted (post) already.
How do we form the present perfect passive voice? Fill in the blank.
have/has been + v -ed
主动语态变被动语态的原则
“三变”
原句主语 by的宾语
宾语
主语
谓语由主动 被动
“三不变”
原句意思不变 原句时态不变 原句主谓宾以外成分不 变
(WORKBOOK P75 EX. 4)
• Dear Parents,
• We hope you will welcome this news. Almost 100 computers_h_a_v_e__b_e_e_n__g_iv_e_n_（give) to us by a
local computer company since the end of last year. A decision_h_a_s_b_e_e_n__m__a_d_e_（make) to begin a computer teaching experiment at our school. Our plan _h_a_s_b_e_e_n__s_u_p_p_o_r_t_• A kind of new PC has been built with more functions.
• 1 I have downloaded the software to help my phone battery last longer. →
The software has been downloaded to help my phone battery last longer.
2. 非延续性动词，如borrow, finish, begin, start, buy, marry, open, join等构成的现在完成 时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或 时态。 例：工程已开始三个月了。
The project has been started for three months.（F） The project has been on for three months.（T）
Talk about something that has been done
Read the pairs of sentences. Underline and compare the different verb forms.
Jan’s life has been greatly improved by the The Internet has greatly improved Jan’s life. Internet.
You shouldn’t leave school before your homework
ha_s__b_e_e_n__f_in__is_h_e_d__(finish).
Everyone will feel extremely delighted if
he_h__a_s_b__e_e_n_a__d_m__it_t_e_d_(admit) to South
use a search engine to do my homework look up information
apply for work and find a great job, start a small online company, start a charity website, bikes can be rented by using online apps
• 4 Have you pressed the button yet to copy the file? →
Has the button been pressed yet to copy the file?
• 5 Has anyone made a comment about the online database? →
yet 已经 since then 从那时起 ever 曾经 by now 到现在为止
Activity 2
Change the sentences into the present perfect passive voice.
• EXAMPLE
• They’ve built a kind of new PC with more functions. →
Many houses have been built (build) for the poor so far.
用法1:强调过去的动作对现在造成的影响或结果，主语和谓语之间为被动关系，
通常与already, yet, just, never, recently等副词连用
The machine has been repaired(repair) for
since the beginning of this term.
have been
• More recently, most of our courses _h_a_v_e__b_e_e_n_t_a_u_g_h_t_ （teach) using computers. We _h_e_lp_e__d___
Entertainment
Social communication
stream movies and music stream your favorite TV programmes keep you updated on all your favourite topics
chat with my friends anytime, anywhere
two hours but it still doesn’t work.
Paper mohnaeys been used (use) for over 50 years.
用法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。
• 2 Someone has lost an identity card. →
An identity card has been lost.
• 3 Have you confirmed the Wi-Fi password? →
Has the Wi-Fi password been confirmed?
现在完成时的被动语态
结构形式
肯定形式： His homework has been finished. 否定形式： His homework has not been finished. 一般疑问句: Has his homework been finished yet? 特殊疑问句： How long has his homework been finished?
Activity 4
has been upside down
have been considered has been completely changed
(Assessing your progress P34. 2.)
has been taken over have been heavily influenced
Much has been written about the wonders of the People have written much about the wonders
World Wide Web.
of the World Wide Web.
past
active
present(no w)
Has a/any comment been made about the online database?
Activity 3 Complete the notice with the correct forms of the verbs in brackets.
Notice to parents
make a fitness plan, get discounts, add money to her bank account, get in shape, keep track of the steps
China Normal University.
用法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。
注意
1. 现在完成时的被动语态、现在进行时的被动语态及一般过去时的被动语态的区别 The machine has been repaired.（说明动作发生在过去，对现在有影响，“现在修好了”） The machine is being repaired now.（说明动作正在进行） The machine was repaired yesterday.（只说明动作发生在过去）
Social use Learning
（help) in our teaching by a lot of information from the Internet. Also, a new computer room
_h_a_s__b_e_e_n_s_e_t_u__p__ (set up) in our school. We hope you will be happy with this exciting new development in our school.
人教版(2019)必修第二册 Unit3 Internet
Discovering Useful Structure
Learning objectives:
After learning this class, you’re able to... 1. learn the form of Present perfect passive voice. 2. know how to use Present perfect passive voice in a specific situation. 3. Write a blog to discuss the advantages and disadvantages of Internet.
提示
常与现在完成时连用的时间状语有：
already 已经 recently/lately 最近 ever since 自那以来 so far 迄今为止 for a long time 很长一段时间 in recent years 在最近几年里 in/during/over the past/last years 在过去的几年里
future
The students have cleaned the classroom.
现在完成时 The classroom has been cleaned. You needn’t
passive clean it now.
表示说话时已经完成的被动性的动作或结果，主语是动作的承受者。
Talk about something that has been done
technical equipment and advice which__h__a_s_b_e_e_n__p_r_o_v_id_e_d___（provide) by the City
Information Technology Centre. Every teacher_h_a_s__b_e_e_n_p__ro_v_i_d_e_d__（provide) with a laptop
主语+have/has been done... 主语+have/has not been done... have/has+主语+been done...? 疑问词+have/has+主语+been done...?
Activity 1
现在完成时的被动语态的用法 The letter has been posted (post) already.
How do we form the present perfect passive voice? Fill in the blank.
have/has been + v -ed
主动语态变被动语态的原则
“三变”
原句主语 by的宾语
宾语
主语
谓语由主动 被动
“三不变”
原句意思不变 原句时态不变 原句主谓宾以外成分不 变
(WORKBOOK P75 EX. 4)
• Dear Parents,
• We hope you will welcome this news. Almost 100 computers_h_a_v_e__b_e_e_n__g_iv_e_n_（give) to us by a
local computer company since the end of last year. A decision_h_a_s_b_e_e_n__m__a_d_e_（make) to begin a computer teaching experiment at our school. Our plan _h_a_s_b_e_e_n__s_u_p_p_o_r_t_• A kind of new PC has been built with more functions.
• 1 I have downloaded the software to help my phone battery last longer. →
The software has been downloaded to help my phone battery last longer.
2. 非延续性动词，如borrow, finish, begin, start, buy, marry, open, join等构成的现在完成 时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或 时态。 例：工程已开始三个月了。
The project has been started for three months.（F） The project has been on for three months.（T）
Talk about something that has been done
Read the pairs of sentences. Underline and compare the different verb forms.
Jan’s life has been greatly improved by the The Internet has greatly improved Jan’s life. Internet.
You shouldn’t leave school before your homework
ha_s__b_e_e_n__f_in__is_h_e_d__(finish).
Everyone will feel extremely delighted if
he_h__a_s_b__e_e_n_a__d_m__it_t_e_d_(admit) to South
use a search engine to do my homework look up information
apply for work and find a great job, start a small online company, start a charity website, bikes can be rented by using online apps
• 4 Have you pressed the button yet to copy the file? →
Has the button been pressed yet to copy the file?
• 5 Has anyone made a comment about the online database? →
yet 已经 since then 从那时起 ever 曾经 by now 到现在为止
Activity 2
Change the sentences into the present perfect passive voice.
• EXAMPLE
• They’ve built a kind of new PC with more functions. →
Many houses have been built (build) for the poor so far.
用法1:强调过去的动作对现在造成的影响或结果，主语和谓语之间为被动关系，
通常与already, yet, just, never, recently等副词连用
The machine has been repaired(repair) for
since the beginning of this term.
have been
• More recently, most of our courses _h_a_v_e__b_e_e_n_t_a_u_g_h_t_ （teach) using computers. We _h_e_lp_e__d___
Entertainment
Social communication
stream movies and music stream your favorite TV programmes keep you updated on all your favourite topics
chat with my friends anytime, anywhere
two hours but it still doesn’t work.
Paper mohnaeys been used (use) for over 50 years.
用法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。
• 2 Someone has lost an identity card. →
An identity card has been lost.
• 3 Have you confirmed the Wi-Fi password? →
Has the Wi-Fi password been confirmed?
现在完成时的被动语态
结构形式
肯定形式： His homework has been finished. 否定形式： His homework has not been finished. 一般疑问句: Has his homework been finished yet? 特殊疑问句： How long has his homework been finished?
Activity 4
has been upside down
have been considered has been completely changed
(Assessing your progress P34. 2.)
has been taken over have been heavily influenced
Much has been written about the wonders of the People have written much about the wonders
World Wide Web.
of the World Wide Web.
past
active
present(no w)
Has a/any comment been made about the online database?
Activity 3 Complete the notice with the correct forms of the verbs in brackets.
Notice to parents
make a fitness plan, get discounts, add money to her bank account, get in shape, keep track of the steps
China Normal University.
用法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。
注意
1. 现在完成时的被动语态、现在进行时的被动语态及一般过去时的被动语态的区别 The machine has been repaired.（说明动作发生在过去，对现在有影响，“现在修好了”） The machine is being repaired now.（说明动作正在进行） The machine was repaired yesterday.（只说明动作发生在过去）