初中英语人教版（2024）九年级上册（2024）Grammar Focus完美版ppt课件

这是一份初中英语人教版（2024）九年级上册（2024）Grammar Focus完美版ppt课件，文件包含新人教版2024英语九年级初三上册-Unit5PowerofIdeasGrammarFocus4a-4c语法课课件lesson3pptx、新人教版2024英语九年级初三上册-Unit5PowerofIdeasGrammarFocus4a-4c语法课lesson3docx等2份课件配套教学资源，其中PPT共39页， 欢迎下载使用。
Tday's Learning Gals
Identify passive vice verbs in sentences (4a)
Master 3 frms: am/is/are + dne, was/were + dne, can be + dne
Use crrect passive vice t cmplete sentences (4b)
Chse active r passive vice in cntext (4c: Qinghai-Xizang Railway)
BIG Questin: What d creative ideas bring abut?
Observatin & Discvery
Lk at these sentences. What d they have in cmmn?
The telephne was invented by Bell in 1876.
Tys can be made by a 3D printer.
A radi message was sent acrss the Atlantic in 1901.
The il and salt are added by the machine itself.
Hint: Lk at the VERBS! What frm are they in?Wh is ding the actin? Wh receives it?
Circle the passive vice verbs in each sentence
A mini-camera is cnnected t the frnt f the glasses.
>>> is cnnected (am/is/are + past participle)
The il and salt are als added by the machine itself.
>>> are added (am/is/are + past participle)
Tys, chairs, tables, and even huses can all be made by the 3D printer.
>>> can be made (can be + past participle)
A radi message was sent acrss the Atlantic Ocean fr the first time in 1901.
>>> was sent (was/were + past participle)
Passive Vice Structure
Subject + be + past participle (+ by ...)The receiver f the actin cmes FIRST!
The thing/persnthat RECEIVESthe actin
am/is/arewas/werecan be
Past Participle
The main verbin -ed / -en /irregular frm
(ptinal)Wh/whatDOES the actin
Example: The telephne + was + invented + by BellActive: Bell invented the telephne.
Three Frms f Passive Vice
Present Passive
am / is / are + past participleA mini-camera is cnnected t the glasses.The il and salt are added by the machine.Signal: nw, always, usually, every day
Past Passive
was / were + past participleA radi message was sent in 1901.The telephne was invented by Bell.Signal: in 1876, in 1901, last year, ag
Mdal Passive
can be + past participleTys can be made by the 3D printer.Huses can be built with new materials.Signal: can, culd, must, shuld + be + dne
Quick Check: Active r Passive?
Bell invented the telephne.
The telephne was invented by Bell.
The 3D printer makes tys.
Tys are made by the 3D printer.
China built the Qinghai-Xizang Railway.
The railway was built with creative ideas.
Be Verb Agreement in Passive Vice
Remember: 'The il and salt' = TWO things = PLURAL = are (nt is!)
Practice & Cnslidatin
Cmplete with the crrect frm f the verb
The telephne ___ (invent) by Alexander Bell in 1876.
>>> was invented (Past passive: in 1876 = past time)
Peple all ver the wrld ___ (cnnect) t each ther thrugh the internet.
>>> are cnnected (Present passive: general truth)
The wrd "rbt" ___ (intrduce) fr the first time in a play in 1920.
>>> was intrduced (Past passive: in 1920 = past time)
It wasn't suppsed t make such a lud nise when the buttn ___ (press) t start the machine.
>>> was pressed (Past passive: past event)
It is believed that the wrld's ldest wheel ___ (find) in Eastern Eurpe.
>>> was fund (Past passive: histrical discvery)
Time Signal Wrds Help Yu Chse Tense
Present Passive Signal Wrds
nw, tday, these daysalways, usually, ftenevery day / week / yearin general, as a ruleExample: Emails are sent every day.
Past Passive Signal Wrds
in 1876 / 1901 / 1920 / 2008ag, last year, yesterdayfr the first timewhen + past eventExample: It was invented in 1876.
Decisin Flw: Find time wrd -> Present r Past? -> Check subject number -> Chse be verb -> Add past participleN time wrd? Cntext tells yu! General fact = present. Histrical event = past.
Active Vice vs Passive Vice
The machine adds il and salt.
Oil and salt are added by the machine.
The railway was built by China.
When D We Use Passive Vice?
We dn't knw wh did it
The windw was brken. (We dn't knw wh)
The receiver is mre imprtant
The telephne was invented in 1876. (Fcus n the inventin)
It's bvius wh did it
The thief was arrested. (Obviusly by the plice)
Frmal / scientific writing
The experiment was cnducted in a lab. (Academic style)
Change frm Active t Passive Vice
1. Peple use the internet every day.
Passive: ___?
2. Thmas Edisn invented the light bulb.
3. Wrkers build bridges ver the river.
4. The teacher explained the grammar rule.
5. We can slve this prblem with creativity.
The internet is used (by peple) every day.
The light bulb was invented by Thmas Edisn.​
Bridges are built (by wrkers) ver the river.​ 
The grammar rule was explained (by the teacher).​ 
This prblem can be slved (by us) with creativity.​ 
Cntext Applicatin: 4c
The Qinghai-Xizang Railway
1,956 kilmeters
Xining (Qinghai) t Lhasa (Xizang/Tibet)
Highest Pint:
5,072 meters abve sea level
Permafrst, lw xygen, fragile ecsystem
2006 (fully peratinal)
Three Majr Challenges:1. Permafrst (frzen grund) - grund melts in summer2. Lw xygen at high altitude3. Prtecting wildlife - Tibetan antelpes and ther animals
Fill in the crrect verb frms (Part 1)
The Qinghai–Xizang Railway was cmpleted in 2006. It ________ (cnnect) Xining t Lhasa, a huge distance f 1,956 kilmetres, and it is the highest railway in the wrld, reaching 5,072 metres abve sea level at Tanggula Pass.
>>> cnnects -- Active: the railway DOES the cnnecting (general fact)
The building f the railway was a great challenge. Creative ideas ________ (need) t slve different prblems.
>>> were needed -- Passive: ideas RECEIVED the need (past tense)
In summer, the tp layer f the frzen grund wuld melt and becme t sft t build n, s pipes ________ (use) t keep the grund hard.
>>> were used -- Passive: pipes RECEIVED the actin (past tense)
Hwever, in sme places, it was impssible t build the railway ver the frzen grund, s tunnels had t ________ (create) instead.
>>> be created -- After 'had t': use base frm (passive with mdal-like structure)
Fill in the crrect verb frms (Part 2)
These bridges are animal-friendly and ________ (allw) animals t pass under the tracks.
>>> allw -- Active: bridges DO the allwing (present tense, parallel structure)
As an imprtant and successful prject, the railway has ________ (increase) turism and ecnmic develpment in the area.
>>> increased -- Present perfect active: 'has increased' (result up t nw)
The lessns learnt and experience gained frm building this railway will help ________ (imprve) transprt in ther similar places in the wrld.
>>> imprve -- After 'help': use base frm (help d smething)
In sme ther places, bridges ________ (build) t keep the railway up abve the grund.
>>> were built -- Passive: bridges RECEIVED the actin (past tense)
Hw t Decide: Active r Passive?
Step 1: Wh/what is the SUBJECT f the sentence?
Subject DOES the actin-> ACTIVE VOICEIt cnnects Xining t allw animals t pass.
Subject RECEIVES the actin-> PASSIVE VOICEPipes were used t keep grund hard.Bridges were built abve grund.
Step 2: What TENSE? -> Chse crrect be verb (is/was/are/were/can be)
Tip: Lk fr TIME WORDS and think abut wh/what the subject is!
Read the Cmplete Passage Alud
The Qinghai–Xizang Railway was cmpleted in 2006. It cnnects Xining t Lhasa, a huge distance f 1,956 kilmetres, and it is the highest railway in the wrld, reaching 5,072 metres abve sea level at Tanggula Pass.The building f the railway was a great challenge. Creative ideas were needed t slve different prblems. In summer, the tp layer f the frzen grund wuld melt and becme t sft t build n, s pipes were used t keep the grund hard. Hwever, in sme places, it was impssible t build the railway ver the frzen grund, s tunnels had t be created instead.In sme ther places, bridges were built t keep the railway up abve the grund. These bridges are animal-friendly and allw animals t pass under the tracks.As an imprtant and successful prject, the railway has increased turism and ecnmic develpment in the area. The lessns learnt and experience gained frm building this railway will help imprve transprt in ther similar places in the wrld.
Ntice: Active vice tells what the railway DOES. Passive vice tells what WAS DONE t slve prblems.
Challenge & Extensin
Find and Crrect the Errrs
The il and salt is added by the machine.
is -> are (plural subject!)
The telephne invented by Bell in 1876.
invented -> was invented (passive needed!)
Tys can made by the 3D printer.
can made -> can be made (mdal passive!)
The railway was cnnect Xining t Lhasa.
was cnnect -> cnnects (active vice!)
Pipes were use t keep the grund hard.
were use -> were used (past participle!)
Rewrite: Active -> Passive OR Passive -> Active
Passive -> Active:
The railway was built by Chinese engineers.
Yur answer: ____________________________
Active -> Passive:
Creative ideas slved many difficult prblems.
Creative ideas were needed t slve different prblems.
The 3D printer can make huses and furniture.
Chinese engineers built the railway.
Many difficult prblems were slved by creative ideas.
Peple needed creative ideas t slve different prblems.
Huses and furniture can be made by the 3D printer.
Passive Vice in the Real Wrld
The new bridge was pened t traffic yesterday.
The experiment was cnducted by a team f researchers.
This app is used by millins f peple wrldwide.
Paper was invented in China abut 2,000 years ag.
Daily Life:
Dinner is served at 7 PM every evening.
The match was watched by 50,000 fans.
Summary & Hmewrk
Passive Vice Summary
Layered Hmewrk
A: Basic (Required)
1. Write ut 3 passive vice frmulas with 2 examples each.2. Change the 5 sentences frm 4b int active vice.
B: Intermediate (Optinal)
3. Write 60 wrds abut yur favrite inventin using passive vice.
C: Advanced (Optinal)
4. Write 80 wrds abut the Qinghai-Xizang Railway with at least 5 passive vice sentences.
5. Tell yur family abut an inventin using passive vice. Recrd audi.
Unit 5 Grammar Fcus: Passive Vice
Passive Vice Frms
Present: am/is/are + dnePast: was/were + dneMdal: can be + dne
Active vs Passive
Active: Subject DOES Bell invented it.Passive: Subject RECEIVES It was invented by Bell.When passive? - Receiver is fcus - Agent unknwn - Frmal writing
4c Railway Examples
Active: It cnnects Xining t Lhasa.Passive: Pipes were used. Bridges were built. Tunnels had t be created.
Creative ideas were needed t slve different prblems!
"Creative ideas are needed t slve different prblems."The Qinghai-Xizang Railway shws that creative ideascan change the wrld -- even at 5,000 meters abve sea level!
Think abut it:What prblem in YOUR life culd be slvedwith a creative idea?