人教版九年级英语下册Unit12 Life is full of the unexpected第三课时 SectionA (Grammar Focus-4c)课件(共17张PPT)

(共17张PPT)
第三课时 Section A（Grammar Focus~4c）
She got into the
classroom.
The teacher started teaching in the classroom.
When she ____________________,
the teacher ___________________ in it.
had started teaching
got into the classroom
8:22 A.M.
8:20 A.M
present
Warm-up
Liu Mei woke up.
The concert was over.
By the time / When Liu Mei _________,
the concert _____________.
woke up
had been over
present
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 the other office workers, I heard a loud sound.
Past perfect tense
含义：
基本结构：
Grammar
用 法
1. 用于表示过去某一时刻或某一动作前已经发生的动作或状态，常与by, before, until, when等引导的表过去的时间状语连用。
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.
4) When we got there, the boys had started playing football.
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。
1) She said she had worked in a foreign company for five years before she became an English teacher.
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。
2) He said he hadn't seen such an exciting basketball match before.
他说他以前没见过如此激动人心的篮球比赛。
现在完成时
此处的情境强调“离开”的动作对现在的影响：公交车已经离开，现在已不在公交车站，故用现在完成时。
The bus has already left.
过去完成时
此处的情境强调“我到达车站时，公交车已经离开”，即表示“公交离开”的动作发生在“到达车站”之前，即“过去的过去”，故用过去完成时。
When I got to the bus stop, the bus had already left.
一般过去时
此处的情境强调“公交离开”的动作是五分钟前发生的，故用一般过去时。
The bus left five minutes ago.
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.
________________________________________________
________________________________________________
Before I put cream in the coffee, the coffee had become cold.
Practice
By the time Mary got up, Tim had already gone into the bathroom.
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.
4a
4. I completed the work for my boss. The workday ended.
__________________________________________________
__________________________________________________
I had completed the work for my boss before 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. __________________________________________________
_________________________________________________
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.
Fill in the blanks with the correct forms of the words in the box.
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.
rush out forget arrive at go into show up find out
shown up
had
had forgotten
3. By the time my mother came back from the market, I _____ already _________ of the
door to go to 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.
had
rushed out
arrived at
had gone into
had found out
4b
1. By the time I left for school in the morning, _______________________________________.
2. By the end of the school day, ________________________________.
3. By dinner time, I ___________________.
Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement.
my classmates had cleaned the classroom
I had had six classes
had eaten three apples
4c
1. He was unhappy when he sold his guitar. After all, he ________(have) it for a very long time.
2. The twins, who ___________ (finish) their homework, were allowed to play badminton on the playground.
3. When Tim got back home, he started to realize that the thief ___________ (come) to his house.
4. By the time I received the letter, I _____________ (tell) the content of it.
had had
had finished
had come
had been told
Exercises
The play had already started when we got to the theatre.
By the end of June they had treated 30, 000 patients.
When I woke up it had already stopped raining.
Homework
1. Recite Grammar Focus.
2.Preview 1a-1e on page 93.