Unit 5 Section A Grammar Focus 4a-4c Grammar in context语境语法探究学案 2026-2027学年人教版九年级英语上册
Unit 5 Grammar in context 语境语法探究学案
Power of Ideas 创意的力量 2026—2027学年人教版九年级英语上册
Textbook 教材范围 Section A Grammar Focus 4a-4c (p. 45)
Name 姓名 ______________ Class 班级 __________ Date 日期 __________
Our question 探究主问题
When should the invention, material or result come first in a sentence?
Outcome 学习成果 Three accurate captions for an inventions display.
Class time 课时 40–45 min
Before class 预习任务
Read the four examples in 4a. Underline what receives the action. Circle the words that carry the action. Bring one example from the Unit 5 listening or speaking text.
Two ways to present an event 同一事件不同起点
An exhibit visitor asks, “What happened to the file?” Which answer starts with what the visitor wants to know? Underline the thing in focus in each version.
A. The printer reads the file. B. The file is read by the printer.
A starts with ____________________. B starts with ____________________. I would choose ______ because ________________________________________________.
Notice the pattern 观察语态结构
In the 4a examples below, mark the subject. Write the helping verb or verbs and the past participle (过去分词) in the last column. Compare the first two rows.
Textbook example 教材例句 | Time or meaning | Verb pattern 动词结构 |
A mini-camera is connected to the front of the glasses. | A feature now | |
The oil and salt are also added by the machine itself. | A usual process | |
Toys, chairs, tables, and even houses can all be made by the 3D printer. | What is possible | |
A radio message was sent across the Atlantic Ocean for the first time in 1901. | A finished event | |
Which part changes with time or number? Which form of the main verb stays in the same role? Say your rule to a partner before turning the page.
Unit 5 Power of Ideas 创意的力量 | 1
学科网（北京）股份有限公司
Choose the form that fits 选对被动语态形式
Check your rule 核对规律
The subject of a passive clause receives the action. The verb group uses be + past participle. 先确定动作承受者作主语，再按时间、主语单复数或情态意义确定 be 的形式。
Meaning 意义 | Form 结构 | Example 例句 |
A fact or process now | am / is / are + past participle | A file is created on the computer. |
A completed past event | was / were + past participle | The bridges were built to raise the tracks. |
Ability or possibility | can + be + past participle | Some objects can be made with a 3D printer. |
Keep be after a modal. The same pattern works in “tunnels had to be created”. The by phrase names a doer when readers need it. In “by building up plastic”, the phrase tells us the method.
Form bank 词形支架 connect → connected, send → sent, make → made, find → found, press → pressed, build → built.
Repair two display captions 改展签并说理由
A process panel says “The file sent to the printer.” A history panel says “The bridges are built during the railway project.” Repair the missing or unsuitable form. Explain which clue tells you how to change it.
Apply the rule in 4b 回到教材应用
Complete 4b on p. 45. Compare items 2 and 4. Next to each, write now / past, then underline the subject and your form of be. Tell your partner why the two forms differ.
If your answer has a past participle but no form of be, check whether you have written a complete passive clause.
Unit 5 Power of Ideas 创意的力量 | 1
学科网（北京）股份有限公司