人教版（2024）九年级上册（2024）3a-3d精品ppt课件

这是一份人教版（2024）九年级上册（2024）3a-3d精品ppt课件，共29页。PPT课件主要包含了ACTIVE，PASSIVE等内容，欢迎下载使用。
Guglielm Marcni
In the 1890s.
It made infrmatin spread faster, made the wrld smaller, and helped develp ther inventins and spread music.
Like a mvie, every sentence has a star. We use the passive vice when the receiver f the actin is the real star f the shw.
Rule 1 (The Unknwn Der):We dn’t knw wh did the actin, r it desn’t matter.(e.g., A radi message was sent.)
Rule 2 (The VIP Object):The result r the bject is much mre imprtant than the creatr.(e.g., Huses can be made by 3D printers.)
The Shift in Fcus
Active Fcus:
Passive Fcus:
Engineers design the bject n a cmputer.
(Fcus n the peple)
The bject is designed n a cmputer.
(Fcus n the inventin)
Passive Vice Frmula
Subject (Receiver)
Past Participle (Dne)
1.The 'be' verb changes based n the time (tense) and subject (singular/plural).
2.The 'dne' (Past Participle) carries the meaning f the actin.
3.We can use 'by' t intrduce the actr, but nly if it is imprtant.
Game 2: Active vs. PassiveWhen yu hear an active sentence, raise yur left hands. When yu hear an passive sentence, raise yur right hands.
Marcni invented the radi.
The radi was invented by Marcni!
Read the sentences. Circle the verbs in the passive vice.
Grammar Statin I - Present Passive
Cncept: Hw things wrk r are dne NOW.
Subject + is / are + Past Participle
Example 1: A mini-camera is cnnected t the frnt...
Example 2: The il and salt are added by the machine...
(Teacher Nte: When d we use ‘is’ vs ‘are’?)
Grammar Statin II – Past Passive
Cncept: Histrical milestnes and things cmpleted in the PAST.
Subject + was / were + Past Participle
Example 1: A radi message was sent acrss the Atlantic Ocean...
Example 2: Befre the radi was invented...
Grammar Statin III - Mdals
Cncept: Expressing ability, pssibility, r future necessity.
Subject + Mdal (can/will/must) + be + Past Participle
Example 1: Tys, chairs... can all be made by the 3D printer.
Example 2: Creative ideas will be needed...
was invented
are cnnected
was intrduced
was pressed
The Ultimate Test f Ideas:The Qinghai–Xizang Railway
were needed
Game 3: Her Engineer
Hey engineers! We meet many prblems in the railway!G t slve them by using passive verbs!
1.Pipes _______ (use)
2.Tunnels _________ (create)
3.Bridges ________ (build)
are created
(Inventin f Marcni)
(The Great Railway f China)
Summary & Hmewrk
be + dne被动语态