人教版（2024）九年级上册（2024）2a-2d精品ppt课件

这是一份人教版（2024）九年级上册（2024）2a-2d精品ppt课件，共27页。
high-speed train
Grammar Fcus —— The Passive Vice
Active Vice: The fcus is n WHO des the actin.
Passive Vice: The fcus is n the INVENTIONS and the ACTIONS.
基本结构: 主语 + be + 过去分词 (dne)
Grammar Fcus —— The Tense
The main system is cnnected t the lab.
The camera was develped by ur team.
The bject is printed layer by layer.
注意下列句型中的时态：
Grammar Fcus —— Engineering Sentences
将下列句子转换为被动语态：
1.A cmputer cnnects the system.
2.A tech cmpany develped the camera.
The system __________ t a cmputer.
The camera __________ by a tech cmpany.
is cnnected
was develped
He went t the Internatinal Exhibitin f Inventins.
The 3D printer. Because almst everything under the sun can be made by it.
It can als make artwrks, tls.
Chse ONE inventin yu use every day.Write 3 sentences describing its histry and use, applying the Passive Vice.(e.g., “The smartphne was invented… It is used fr…”)