【新课标】Unit 12 SectionA GF-4c 课件（新目标九年级Unit12 Life is full of the unexpected)

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Unit 12
Life is full of the unexpected.
Section A (GF-4c)
be full of ...
arrive at
be about to do sth.
even though
wait in line with ...
go on
stare at sb. / sth.
in disbelief
jump out of bed
充满……
到达
正要做某事
即使；尽管
与……一起排队等待
继续；发生
盯着某人 / 某物
不信；怀疑地
从床上跳下来
Revision
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) 我回到学校的时候，铃声已经响了。
_____ _____ _____ I got back to school, the bell ______ _______.
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 _____ _______ _______.
When
had
left
By the time
had rung
根据汉语提示完成句子。
got to
had already
Which action happened first
left
4) 我正要上楼，这时我决定先去买杯咖啡。
I ______ ______ ______ go up to my office when I decided to get a coffee first.
5) 当我正在和其他的工作人员一起排队等候的时候，我听到了一声巨响。
As I ______ _______ ______ ______ with the other office workers, I ______ _____ _____ ______.
was about to
was waiting in line
heard a loud sound
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.
尝试总结语法点
一、概念
过去完成时表示一个动作或状态在过去某一时间或动作之前已经完成或结束, 也可能是早已完成或结束, 即“过去的过去”；也可指过去的动作延续到过去的某个时刻。
二、结构
“had +动词的过去分词”
过去完成时
表示过去某一时间或动作之前已经发生或完成的动作或存在的状态。句中常用by, before, when, until等词引导时间状语。它是以过去某一时间为起点, 所以过去完成时是一个相对的时态, 表示的是“过去的过去”。
只有和过去某时间或某动作相比较时才能用到它。
e.g. Most of the guests had left when he arrived at the party. 当他到达晚会时, 他发现大多数客人已经离开了。
三、用法
2. 过去完成时还可表示过去某一时刻之前发生的
动作或状态持续到过去某个时间或持续下去,
常与for, since等词连用。
e.g. When Jack arrived, Mary had been away for
almost an hour.
当杰克到时, 玛丽已经离开快一个小时了。
时态： 过去完成时
时态用处： 表示在过去某个时刻前发生的动作
3.结构： had + done
时态： 过去完成时
2.
否定句： 主语 + had + not + done (+ 其他).
一般疑问句： Had + 主语 + done (+ 其他)
特殊疑问句： 特殊疑问词 + had + 主语 + done (+ 其他)
1)在过去某一时刻或动作之前已经发生或完成了的动作
标志词：
by、by the end of +过去的时间点/动作
before、by the time 、until +时间状语从句(一般过去时)
具体用法
e.g.他说他以前见过你。
He said that he _________ (see) you before.
e.g.By the time the teacher came, we ______ cleaning the classroom.
A. finished B. have finished C. had finished
had seen
C
2）从过去的某一时刻开始，一直持续到过去另一时间的动作或状态
标志词：常与for 、since 构成的时间状语连用
e.g. I had studied English for three years before coming to this school.
在来这所学校之前，我已经学习英语三年了。
e.g. When we got to the cinema, the movie ______ for ten minutes.
A. has been on B. had been on
C. had begun D. began
B
3)过去完成时经常用于主句为一般过去时的宾语从句中, 表示从句动作先于主句动作发生, 像在told, said, knew, heard, thought 等动词后的宾语从句中。
e.g.他告诉我说他们队已经赢了。
He told me that his team _________ already _______ (win).
e.g.她说她仍没去过长城。
She said that she _____________(not go to) the Great Wall yet.
had
won
hadn’t been to
过去分词done规则变化
动词过去分词的构成有规则构成和不规则构成两类。规则动词过去分词的构成和其过去式的构成相同。
work---worked---worked wish→wished→wished stay→stayed→stayed
live---lived---lived like → liked → liked hope → hoped → hoped
study--studied--studied hurry→hurried→hurried reply→replied→replied
drop--dropped--dropped stop→stopped→stopped clap→clapped→clapped
(1)一般动词，在词尾直接加“ ed ”。
(2)以“ e ”结尾的动词，只在词尾加“ d ”。
(3)以“辅音字母 + y ”结尾的动词，变“y” 为 “i”，再加“ ed ”。
(4)辅元辅结尾的动词，双写辅音字母，再加“ ed ”。
5. AAA 格式
let → let → let put → put → put read → read → read
9. AAB 格式
beat → beat → beaten
6. ABB 格式
feel → felt → felt keep → kept → kept sleep → slept → slept
不规则变化
7. ABA 格式
come → came → come become → became → become
8. ABC 格式
break → broke → broken grow → grew → grown
4a
Make sentences using by the time or before.
1. Tim went into the bathroom. Mary got up.
By the time Mary got up, Tim had already gone into the bathroom.
2. The coffee became cold. I put cream (n. 奶油) 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.
__________________________________
__________________________________
4. I completed the work for my boss. The workday
(n. 工作日) ended.
__________________________________
__________________________________
By the time I got to school, the teacher had collected the math homework.
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 (n. 果馅派).
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.
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
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.
had
showed up
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
had found out
arrived at
had gone into
rush out, forget, arrive at, go into,
show up , find out
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,
_____________________________________
3.By dinner time, I
_____________________________________
Exercise
1.当他到达学校的时候，老师已经开始上课了。
2.当我出来的时候，我爸爸已经离开家了。
3.在我拿书包以前我把门锁上了。
4.在她做完作业之前我妈妈已经回来了。
By the time he got to school, the teacher had already started teaching.
When I got outside, my father had left home.
Before I got my schoolbag, I had locked the door.
Before she finished her homework, my mother had already
been back.
Homework.
Write your experience with the past perfect tense.
Thank you!