资源简介

(共16张PPT)
Period4
Discovering Useful Structures
Unit 3 The Internet
英语
① To analyse the form and feature of the present perfect passive voice.
② To find out the differences in meaning and function between the active and passive forms.
③ To master the function of the present perfect passive voice in the context and use it in real situations.
Studying objectives:
Key points：
1. To find out the differences between the active and passive forms.
2. To help students to learn and use the present perfect passive voice in the context.
Difficult points：
How to use the present perfect passive voice in real situations.
Studying key points and difficulties:
Lead-in
Try to answer the following question using the present perfect passive voice.
What aspects in your life have been changed since the appearance of the Internet
Aspect Before After
Transport
Reading
Payment
Entertainment
foot; bike; bus; train plane; high-speed rail
paper books E-books
in cash; by credit E-payment
watch movies in the theater…
Stream movies and music; chat online…
Observation and analysis
1. Jan’s life has been greatly improved by the Internet.
The Internet has greatly improved Jan’s life.
2. Much has been written about the wonders of the World Wide Web.
People have written much about the wonders of the World Wide Web.
Active __________________
Passive _________________
The form of the present perfect passive voice
Verb form
have/has +v-ed
have/has been +v-ed
Activity 1　Read the pairs of sentences. Highlight and compare the different verb forms.
Activity 1　Change the sentences into the present perfect passive voice.
Practice
(1) The Internet has changed the way we communicate.
(2) We have downloaded softwares to help us book hotels and tickets online.
(3) Have you read this famous book on the website
(4) More recently, many teachers have taught courses with computers.
The way we communicate has been changed by the Internet.
Softwares have been downloaded by us to help us book hotels and tickets online.
Has this famous book been read by you on the website
More recently, courses have been taught by many teachers with computers.
Practice
Fake news ____________________(mix) with the real news on the Internet.
Personal information________________________(leak) in some online activities.
Cyberbully_________________________(seen) more often nowadays.
It seems that more health problems _____________________(cause) by mobile phones.
The girl is upset because all her money___________________(steal) from her account by a hacker.
Complete the sentences with the present perfect passive voice of the given verbs.
has been mixed
has been leaked
has been seen
have been caused
has been stolen
Activity 1　Change the sentences into the present perfect passive voice.
Activity 2　Summarize the differences in meaning and function between the active and passive forms.
Practice
The object in an active sentence becomes the subject in a passive sentence.
Both sentence types convey a similar meaning, but they are slightly different.
Active sentences are used more often, as they are more direct.
Passive sentences are often used when the doer of an action is unknown, not important, or preferred not to be named.
Activity 2　Summarize the differences in meaning and function between the active and passive forms.
Practice
How to change the present perfect active voice into the present perfect passive voice:
“三变”：
① 原主变为by短语
② 原宾变为现主语
③ 谓语主动变被动
“三不变”：
①原句意思不变
②原句时态不变
③原句主谓宾以外的成分不变
Activity 3　Complete the notice with the correct forms of the verbs in brackets.
Practice
Notice to parents
Dear Parents,
We hope you will welcome this news. Almost 100 computers ______________(give) to us by a local computer company since the end of last year. A decision ____________(make) to begin a computer teaching experiment at our school. Our plan ________________ (support) with technical equipment and advice which _______________(provide) by the City Information Technology Centre. Every teacher _________________(provide) with a laptop since the beginning of this term.
More importantly, most of our courses ________________(teach) using computers. We ________________(help) in our teaching by a lot of information from the Internet. Also, a new computer room _______________(set up) in our school. We hope you will be happy with this exciting new development in our school.
No.8 Senior High School
has been made
has been given
has been supported
has been provided
has been provided
have been taught
have been helped
has been set up
Activity 1 Read the poem. Brainstorm and discuss how the present perfect passive voice is used.
Language use
Look at the way your face has been washed
Look at the way your teeth have been brushed
Look at the way your shoes have been cleaned
You’d better do them again.
Look at the way the flowers have been planted
Look at the way the grass has been cut
Look at the way the paths have been swept
I hope that you’ll come here again.
Activity 2 Think of your own situation and write a similar poem.
Language use
Look at the way your face has been washed
Look at the way your teeth have been brushed
Look at the way your shoes have been cleaned
You’d better do them again.

Look at the way the flowers have been planted
Look at the way the grass has been cut
Look at the way the paths have been swept
I hope that you’ll come here again.
Your poem？
Language use
1. What are the subjects of your poems
2. Can you list some verbs connected to the subjects
3.Can you make a sentence according to the example
Films, pictures, flowers, trees…
Make, paint, plant…
Look at the way the pictures have been painted.
Look at the way the films have been made.
Summary
现在完成时被动语态的解题步骤
1. 找时：找与现在完成时相对应的时间状语；
2. 圈主：主语与动词构成被动关系；
3. 定谓：确定谓动形式：have/ has (not) been done。
Homework
Finish the Activities 2,3,5 in Using Structures of Workbook on pages 74—75.
Thank you !

展开更多......

收起↑