Unit 12Life is full of the unexpected The Past Perfect Tense 过去完成时课件(共19张PPT) 人教版英语九年级全册

(共19张PPT)
The Past Perfect Tense 过去完成时
Unit 12
Life is full of the unexpected.
Grammar
1. To learn to understand the use of Past perfect tense
2. To be able to write sentences using by the time or before
3.To understand the differences between the Present and Past perfect tense
Learning Objectives
When she got up , her brother had already gotten in the shower.
Mary had a terrible morning yesterday .
Revision
now
got up
had already gotten in the shower
When she got outside, the bus had already left.
now
got outside
had already left
had left my keys
at home
got to school
By the time she got to school, she realized she had left her keys at home.
now
1)当我到达学校的时候，我才意识到我把书包忘在家里了。
_______ I got to school, I realized that I ______ ______ my backpack at home.
2)到我返回学校的时候，铃声已经响过了。
_____ _____ _____ I got back to school, the bell ______ _______.
When
had
left
By the time
had rung
Grammar Focus
3)我到达公共汽车站之前， 汽车已经离开了。
Before I _____ _____ the bus stop, the bus _____ _______ _____.
got to
had already left
表示动作发生在过去的过去
◆ 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.
过去完成时：
构成：
概念：
had + 动词的过去分词
表示在过去的某一时间或动作之前已经发生或完成了的动作。即：过去的过去。
时间：
用法1：
1. 她到家之前她的孩子已经睡着了。
When she got home her children ____________(sleep).
had slept
2. 在他们到达之前电影已经开始了。
Before they arrived here the film _________ already ___________ (start).
had
started
3. 她出去之前公共汽车就已经离开了。
had already left
By the time she got outside, the bus__________________.
过去完成时一般与before, after, when，by the time, till/ until 等引导的时间状语从句连用，从句用一般过去时。
1. 他说他以前见过你。
He said that he ____________(see) you before.
had seen
3. 他告诉我说他们队已经赢了。
He told me that his team _______already _______ (win).
4. 她说她仍没去过长城。
She said that she _______________( be to) the Great Wall yet.
had
won
hadn't been to
2. Tom说他借了这本书两周了。
Tom said he the book for 2 weeks.
had kept
用法2：在told, said, knew, heard, thought等动词引导的宾语从句中，一般用过去完成时。
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.
_________________________________
_________________________________
Before I put cream in the coffee, the coffee had become cold.
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.
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.
4. I completed the work for my boss. The workday ended.
__________________________________
__________________________________
I had completed the work for my boss
before the workday ended.
4b
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.
had
rushed out
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.
arrived at
had gone into
4. Before she got to the airport,
she ____________ about the earthquake.
had found out
1. 我听说那个年轻人去世三个月了.
2. 我们已经学英语六年了。
3. 到上学期末,我们已经学历4000多个单词.
4.贝尔在30岁前发明了电话.
I hear that that young man__________________
for three months.
We English for six years.
has been dead
By the end of last term, we over 4,000 words.
had learnt
Bell the telephone before he was 30.
have learnt
had invented
过去完成时VS 现在完成时
现在完成时表示的动作发生在过去, 但侧重对现在产生的结果或造成的影响,与现在有关。 其结构为“助动词have/has+V-过去分词”; 过去完成时则是一个相对的时态, 它所表示的动作不仅发生在过去,更强调“过去的过去”。
过去完成时VS一般过去时
过去完成时在时间上强调“过去的过去”，而一般过去时只强调过去某一特定的过去时间。
1.They had arrived at the station by ten yesterday.
(说明不到１０点就在车站了）
2.They arrived at the station at ten yesterday.
(说明１０点到车站的）
1. After he ______________ (finish) his work, he went out.
2. The children ran away after they ______ (break) the window.
3. I ________ (learn) 300 words by the end of last month.
4. Ann told me that her father ________(go ) to Paris and he ____________ ( come ) back in a few days.
5. My friend __________ (buy) the car two years ago. He ______________ (buy) it for two years.
Exercises:
had finished
had broken
had learnt
had gone
would come
bought
has had
6. Since we began to use the Internet, our lives _____________ (change) a lot.
7. She _________(visit) the city three times before she died in 1997.
8.He asked me if I_______ (get) everything ready.
9. She thanked me for what I _____ __(do) for her son.
10. —Look at the blue sky! The rain________ (stop).
—Let’s go out for a walk.
have changed
had gottten
has stopped
had done
had visited