Unit 12 Life is full of the unexpected. Section A 4a-4c 课件【人教2024秋九全英语】

(共22张PPT)
（人教新目标版）九年级全
Period 3 Section A 4a-4c
Unit 12
Life is full of the unexpected.
Learning objectives
Key words & phrases：
cream，pie，bean，market
by the end of
Key Grammar：
Understand past perfect tense.
Learn to use adverbial clauses with when，before，as，by the time to narrate past events.
cream
n. 奶油；乳脂
① fresh cream 新鲜的奶油
② cream cakes 奶油蛋糕
bean
n. 豆；豆荚
① green beans 四季豆
② broad beans 蚕豆
New words
workday
Today is Friday, the last workday of this week.
今天是周五了，这周的最后一个工作日。
n. 工作日
show up
He did not show up.
他没有露面。
赶到；露面
New words
market
① a fruit/flower market 水果/鲜花市场
② an indoor/a street market 室内/街头市场
n. 市场；集市
New words
By the time I got up, my brother had already gotten in the shower.
By the time I got outside, the bus had
already left.
When I got to school, I realized I had left
my backpack at home.
下列句子使用了什么时态？
一般过去时
过去完成时
Lead in
The Greens had left home when the delivery arrived.
The Greens left home at 8:30.
The delivery(快递) arrived at 9:30.
leave home
arrive
8:30
9:30
过去的过去
Lead in
过去完成时, 表示过去某一时间前就已经发生或完成了的动作，对过去的某一时间点造成的某种影响或结果。
当车来的时候，我在车站已等了20分钟。
他说自从1949年以来他就在那家工厂工作。
I. 基本含义
① I had been at the bus stop for 20 minutes when a
bus finally came.
② He said he had worked in that factory since 1949.
Presentation
① She said she had been to Paris.
她说她去过巴黎。
② I didn’t know the way to John’s house because I hadn’t been there before.
我不知道去约翰家的路，因为我之前没去过。
③-Had you visited the museum before
你以前参观过这个博物馆吗？
-Yes, I had. /No, I hadn’t.
是的，我去过。/不，我没有去过。
④What had you prepared for the birthday party before yesterday
你昨天之前都为生日聚会准备了什么？
肯定句：
II. 过去完成时的基本结构
主语+had+动词过去分词+其他.
否定句：
主语+had+not+动词过去分词+其他.
一般疑问句：
Had+主语+动词过去分词+其他
特殊疑问句：
疑问词+had(+主语)+动词过去分词+其他
肯定回答:
Yes, 主语+had.
否定回答:
No, 主语+had not.
Presentation
III. 过去完成时的基本用法
1. 表示过去某一时间可用by, before等构成的短语，也
可用when, before, until等引导的从句。
当我到达机场时，我的航班已经起飞了。
这部电影在我到达电影院之前就已经开始了。
他一直等到她说完。
① By the time I got to the airport, my flight had already
taken off.
② The movie had started before I arrived at the cinema.
③ He waited until she had finished speaking.
Presentation
2. 过去完成时用于宾语从句中，表示从句的动作
或状态发生在主句的谓语动作之前。
她说她在成为一名英语老师之前曾在一家外国公司工作了五年。
他说他以前没看过如此激动人心的篮球比赛。
① She said she had worked in a foreign company for
five years before she became an English teacher.
② He said he hadn't seen such an exciting basketball
match before.
Presentation
Make sentences using by the time or before.
4a
P92
Practice
By the time Mary got up, Tim had already gone into the bathroom.
Before I could put cream in the coffee, the coffee had become cold.
By the time I got to school, the teacher had collected the math homework.
Tim went into the bedroom. May got up.
2. The coffee became cold. I put cream in the coffee.
3. The teacher collected the math homework.
I got to school.
Practice
I had completed the work for my boss before the workday ended.
The movie had started before I arrived at the cinema.
By the time I got home from my language course, my mother had finished making the apple pie.
4. I completed the work for my boss.
The workday ended.
5. The movie started. I arrived at the cinema.
6. My mother finished making the apple pie.
I got home from my language course.
Practice
Fill in the blanks with the correct forms of the words in the box.
P92
4b
1. By the time I arrived at the party, everyone else ____
already _________.
2. When he put the noodles into a bowl, he realized he
____________ to add the green beans.
3. By the time my mother came back from the market, I
____ already _________ the door to go for my piano lesson.
4. Before she got to the airport, she _____________ about the
earthquake.
5. When she _________ the movie theater, she remembered
she had forgotten to feed her dog.
6. Before she got a chance to say goodbye, he ____________
the building.
rushed out
had
shown up
had forgotten
had
had gone into
had found out
arrived at
Practice
Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement.
4c
P92
1. By the time I left for school in the morning,
_____________________________________.
2. By the end of the school day, __________________.
3. By dinner time, I ____________________.
my classmates had cleaned the classroom
I had had six classes
had eaten three apples
Practice
翻译句子。
然后牛顿研究了结果，并用他学到的东西做了新的实验。
医生告诉我，多年的吸烟已经损害了我的健康。
1. Then Newton studied the results and used what he
had learned to do new experiments.
___________________________________________
___________________________________________
2. The doctor told me that many years' smoking had
weakened my health.
__________________________________________
Practice
过去完成时
含义
结构
时间标志词
过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作。
助动词had+动词过去分词
过去完成时常与when, by the time, before, by等引导的时间状语或状语从句连用。
(1) 表示过去某一时间可用by, before等构成的短语，也可用when, before, until等引导的从句。
(2) 过去完成时用于宾语从句中，表示从句的 动作或状态发生在主句的谓语动作之前。
用法
Summary
1. Can you understand the use of past perfect
tense
2. Can you use past perfect tense to describe
events
Self-evaluation
Write five sentences about an unexpected event using past perfect tense .
Homework