Unit 12 Life is full of the unexpected.（SectionA Grammar Focus-4c）课件(共34张PPT)

(共34张PPT)
Section A Grammar Focus-4c
Unit 12 Life is full of the unexpected.
九年级下册 RJ
初中英语
4. Sentences：① When I got to school, I realized that I had left my backpack at home.
② By the time I got back to school, the bell had rung.
③ As I was waiting in line with the other office workers, I heard a loud sound.
1. New words: cream, workday, bean, market
3. Grammar: past perfect tense, simple past tense
2. Expressions: show up, by the end of
Learning goals
Listen to the story and underline all the verbs in the passage which tell us what happened some time ago and what had happened some time before.
Warming up
My old friend, Harrison, had lived in the Mediterranean for many years before he returned to England.
He had often dreamed of retiring in England and
had planned to settle down in the country. He had no sooner returned than he bought a house and went to live there. Almost immediately he began to complain about the weather, for even though it was still summer, it rained
continually and it was often bitterly cold. After so many years of sunshine, Harrison got a shock. He acted as if he had never lived in England before. In the end, it was more than he could bear. He had hardly had time to settle down when he sold the house and left the country. The dream he had had for so many years ended there. Harrison had thought of everything except the weather.
Discussion
在故事中，为什么分别使用一般过去时和过去完成时？在使用不同时态时，这些句子的动作有什么先后顺序？
过去完成时由“助动词had (用于各种人称和数) + 过去分词”构成，表示某动作或状态在过去某一时间或动作之前已经发生或完成，它表示动作发生的时间是“过去的过去”。
语法概述
过去的过去
过去某时
现在
将来
过去完成时
从过去之前的某个时间点到过去的某个时间点为止
（先发生）
（后发生）
Grammar Focus
When I got to school, I realized that I had left my backpack at home.
By the time I got back to school, the bell had rung.
Before I got to the bus stop, the bus had already left.
I was about to go up to my office when I decided to get a coffee first.
As I was waiting in line with other office workers, I heard a loud sound.
Read the following sentences and classify them according to different tenses.
主句为过去完成时，从句是一般过去时，主句动作发生在从句之前。
两个动作同时进行,主、从句都是一般过去时或过去进行时。
When I got to school, I realized that I had left my backpack at home.
By the time I got back to school, the bell had rung.
Before I got to the bus stop, the bus had already left.
I was about to go up to my office when I decided to get a coffee first.As I was waiting in line with other office workers, I heard a loud sound.
When he came in, the students stood up.
When the baby saw her mother, she stopped crying.
He was about to watch a movie when his parents knocked at the door.
They were about to get on the bus when they heard someone shout.
As I was standing in front of the teachers’ office, I saw a boy running to the classroom.
As he was doing the housework, a bird flew into the
kitchen.
Discuss and answer the questions in groups.
在以上的时间状语从句中，主句和从句的动作是先后发生还是同时发生
主从句都用过去时态的时间状语从句的引导词有哪些
1. 在以上的时间状语从句中，主句和从句的动作是同时发生，或者是在 进行一个动作时，另外一个动作突然发生。
2. 主从句都用过去时态的时间状语从句引导词有when, as 等。
When he came in, the students stood up.
When the baby saw her mother, she stopped crying.
He was about to watch a movie when his parents knocked at the door.
They heard someone shouting behind them when they were about to get on the bus.
As I was standing in front of the teachers’ office, I saw a boy singing in outside the classroom.
As he was doing housework, a bird flew into the kitchen.
When I got up, I found that my bother had already gotten in the bathroom.
When she got to the check-out, she realized she had left her purse at home.
Before I arrived at the airport, the plane had already taken off.
They had already had breakfast before they got to the hotel.
Most of the guests had left by the time he arrived at the party.
The film had already begun by the time I got to the cinema.
Read these sentences.
1. 过去完成时的句式结构
(1) 肯定句：主语 + had + 过去分词 + 其他.
(2) 否定句：主语 + hadn’t + 过去分词 + 其他.
(3) 一般疑问句：Had+ 主语 + 过去分词 + 其他
肯定回答：Yes, 主语 + had.
否定回答：No, 主语 + hadn’t.
过去完成时
表示一个动作或状态在过去某一时间动作之前已经发生或完成，常与by、 before等构成的时间短语连用。
常用在said、told、knew、heard、realized等后面的宾语从句中。
(3) 在含有when、 before等引导的时间状语从句的复 合句中， 如果从句的时态为一般过去式，主句常用过去完成时。
(4) 过去完成时是一个相对的时态，只有和过去的某个时间或动作相比较时才会用到，因此可通过分析语境来确定时态。
2. 过去完成时的用法
(巴中中考) My parents _____ to work by the time I up.
A. began; get B. had begun; had got C. had begun; got
C
一般过去时表示过去某时间发生的动作或存在的状态，而过去完成时则表示过去某一时间以前（即过去的过去）发生的动作或存在的状态。
3. 一般过去时和过去完成时的区别
4a Make sentences using by the time or before.
1. Tim went into the bathroom. Mary got up.
_____________________________________________________________
2. The coffee became cold. I put cream in the coffee.
_____________________________________________________________
3. The teacher collected the math homework.I got to school.
__________________________________________________________________
__
By the time I got to school, the teacher had collected the math homework.
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.
n. 奶油；乳脂
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.
_______________________________________________
_______________________________________________
I had completed the work for my boss before the workday ended.
The movie had already 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.
Write the past form and past participle for the following verbs.
原形
过去式
过去分词
rush
forget
arrive
go show
find
rushed rushed
forgot forgotten
arrived arrived
went gone
showed shown
found found
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 __________ of the door to go to my piano lesson.
4b Fill in the blanks with the correct forms of the words in the box.
rush out
forget
arrive at
go into
show up
find out
had
shown up
had forgotten
had
rushed out
4. Before she got to the airport, she _____________ about the earthquake.
5. When she _________ the movie theatre, she remembered she had forgotten to feed her dog.
6. Before she got a chance to say goodbye, he _____________ the building.
arrived at
had gone into
had found out
rush out
forget
arrive at
go into
show up
find out
Complete the sentences. Make new sentences as many as possible.
By the time I left for school in the morning,
___________________________________.
By the end of the school day,
___________________________________.
Complete the sentences. Make new sentences as many as possible.
By dinner time,
I ___________________________________.
Complete the sentences. Make new sentences as many as possible.
By the end of the school day, … (教材P92 4c)
by the end of 在（某时间点）以前
by the end of 含有“不迟于”的意思。通常情况下，根据by the end of后接的时间的不同，主句选用相应的时态：
(1) 接将来的时间，主句用一般将来时。
By the end of next month, I will go to Shanghai to attend a meeting.
By the end of last month, I had read 3 books.
Language points
(2) 接现在的时间，句子用现在完成时。
By now, we have learned 6 English songs.
(3) 接过去的时间，句子用过去完成时。
By the end of last month, I had read 3 books.
4c Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement.
By the time I left for school in the morning, _______________.
By the end of the school day, ___________________________.
By dinner time, I _____________________________________.
1. (天水中考)By the time I got to the cinema, the movie _______ for 10 minutes.
A. has been on B. had been on
C. had stopped D. had begun
2. Robert was very upset that most of his friends _______ when he ______ at the party.
A. left; had arrived B. had left; arrived
C. left; arrived D. had left; had arrived
一、单项选择
B
B
Exercises
3. She _______ her keys in her office so she had to wait until her husband ______ home.
A. has left; comes B. had left; would come
C. had left; came D. left; had come
4. She said she ________ the story already.
A. has read B. read
C. will read D. had read
5. They ______ 100 hundred trees by last weekend.
A. planted B. have planted
C. will have planted D. had planted
C
D
D
二、句型转换
1.I had cooked the dinner when my parents came back. (改 为否定句)
I __________ _________ the dinner when my parents came back.
2.Mary’s brother went into the bathroom and then Mary got up. (改写句子)
When Mary _____ ______ , her brother ____ ____ ___ the bathroom.
3.By the time she got up, her mother had gone to work. (对画线部分提问)
______ _____her mother done by the time she got up
hadn’t cooked
had been in
got up
What had
Summary
cream, workday, bean, market
show up, by the end of
past perfect tense, simple past tense
When I got to school, I realized that I had left my backpack at home.
By the time I got back to school, the bell had rung.
As I was waiting in line with the other office workers, I heard a loud sound.
Key words
Useful expressions
Grammar
Sentences
1.Write a short passage about yourself according to the statements in 4c.
e.g. I had a bad day yesterday. By the time I left for school in the morning, I…
2. Preview the new words and phrases in Section B (1a-1e).
Homework
谢谢聆听！
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