Unit 12 Life is full of the unexpected Section A Grammar Focus-4c 课件2024-2025学年人教版九年级英语全册

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人教新目标Go For It九年级英语全册
Unit12 Life is full of the unexpected SectionA Grammar Focus-4c
Unit 12
Section A (Grammar Focus-4c)
Life is full of the unexpected.
Teaching Objectives
语言知识:
准确运用正确的时态描述自己生活中发生的事情。
01
学习能力:
了解过去完成时态，复习一般过去时态。
02
文化意识:
通过观察归纳，正确理解和运用过去完成时态。
03
思维品质:
通过区别一般过去时态和过去完成时态，培养思维的批判性和逻辑性。
04
Discussion
这些句子，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？
宾语从句，主句一般过去时，从句动作发生在主句之前，用过去完成时。
When I got to school, I realized that I had left my backpack at home.
by the time/ before + 一般过去时的时间状语从句，主句动作发生在从句之前，主句用过去完成时
By the time I got back to school, the bell had rung.
Before I got to the bus stop, the bus had already left.
Warming Up
Let’s first enjoy a video.
What is the song about
What tense will we use when telling a story happened long ago
It tells a story about a princess asleep.
Past tense.
Lead-in
Bob and Peter are late for school.
Bob and Peter are late for school.
You were late for school this morning.
What happened
I stayed up watching the
football match last night,
so I overslept this morning.
I rushed to the bus stop without breakfast.
But unluckily, by the time I got there,
the bus had already left. By I got to the school, the class had been on 15
minutes.
You shouldn’t stay up so late at night.
when引导的时间状语从句用一般过去时，主句表示decided的时候马上要做的事情，发生在decided这个动作之后，用过去将来时。
I was about to go up to my office when I decided to get a coffee first.
As 引导的时间状语从句用过去进行时，主句表示was waiting那个时间发生的动作，表示过去某个时间发生的动作，主句用一般过去时
As I was waiting in line with the other office workers, I heard a loud sound.
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”。
过去完成时
Lead-in
Bob and Peter are late for school.
Bob and Peter are late for school.
You should set an alarm clock .
My parents had gone to Beijing to attend a meeting.
Nobody woke me up today.
Past Perfect Tense
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.
Read the sentences below, and circle the conjunctions of clauses and underline the tense.
过去的过去
过去某时
现在
将来
（先发生）
（后发生）
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
When I got to school, I realized that I________my backpack at home (落下了)
By the time I _______school, the bell had rung.(到达)
Before I ____to the bus stop,(到达) the bus_________.(离开)
I _____________ go up to my office when I decided to get a coffee first.(打算)
As I was_________________the other office workers,I heard a loud sound.(排队等)
Grammar Focus
had left
got to
was about to
got
waiting in line with
had left
P92
过去完成时的句式类型
肯定句：主语＋had ＋过去分词＋…
否定句：主语＋ hadn’t ＋过去分词＋…
一般疑问句：Had ＋主语＋过去分词…？　
(Yes, 主语＋had. / No, 主语＋hadn’t.)
特殊疑问句：疑问词＋had ＋主语＋过去分词＋…？
Grammar Focus
1.由时间状语来判定
① by+过去的时间点
She had finished reading the book by 9 o’clock yesterday.
② by the end of+过去的时间点
We had completed all the work by the end of last month.
③ before + 过去的时间点。
The movie had started before I arrived at the cinema.
一般过去，后发生
过去的过去，先发生
Judgement method
had done
④when + 过去的时间点。
When I got to school, I realized I had left my at home.
By the time I got back to school, the bell had rung.
一般过去式
从句
主句
过去完成时
动作发生在后
动作发生在前
在过去某个时间或某个动作之前发生的动作或存在的状态，它表示动作发生的时间是“过去的过去”。
定义
(1)由时间状语来判定
① by+过去的时间点
例：到昨天9点钟时，她已经读完了这本书。
She had finished reading the book by 9
o’clock yesterday.
判断依据
2.由“过去的过去”来判定
①含有宾语从句的复合句中：当主句为一般过
去时，且从句的动作先于主句的动作发生时，
从句要用过去完成时。如在told，said，
knew，heard，thought等动词后的宾语从句中。
She said that she had seen the film before.
看电影是在她说之前做的。
Judgement method
had done
1. 由时间状语来判定
(1) by + 过去的时间点。
I had finished reading the novel by nine o'clock last night.
昨天晚上九点前我已经读完这本小说了。
(2) by the end of + 过去的时间点。
到...为止
(3) before + 过去的时间点。
在...之前
过去的过去，先发生
过去完成时的判断依据
Grammar Focus
Write two true statements and one false statement about your day
yesterday. Then ask your classmates to guess the false statement.
1.By the time I left for school in the morning, ______
2.By the end of the school day, ____________
3.By dinner time , ____________
I had already had dinner.
I had already finished my homework
I had already eaten plenty of fruits.
I had got a story book from Jane.
I had finished the test
I had cleaned the classroom.
I had had too many bananas.
4c
By the end of意为“到...时为止，....之前;到....结束时”。其后若接表示将来的时间，句子常用将来完成时;若接表示过去的时间，句子常用过去完成时。
例: By the end of next month, | will have finished reading this book.到下个月末，我将已读完这本书。
By the end of last month, I had planted thousands of trees.到上个月末，我已经种了数干棵树了。
4c
② by the end of+过去的时间点
例：到上个月月底，我们已经完成了所有工作。
We had completed all the work by the end of last month.
翻译：
她说她之前看过了这部电影。
___________________________________________
当我到达车站的时候，火车已经走了。
____________________________________________
(2)由“过去的过去”来判定
She said that she had seen the film before.
When I got to the station, the train had already left.
Presentation
Post-grammar
Class test
一、用所给单词的适当形式填空
1.他说他以前见过你。
He said that he ______________ (see) you before.
had seen
2. 当我进来时，他已做完了作业。
When I came in, he ________________(finish) his homework.
had finished
3. The children ran away after they ___________ (break) the window.
4. I went to Tom’s house but he __________ (go) out.
had gone
had broken
5. My friend __________ (buy) the car two years ago. He ________________ (have) it for two years.
bought
has had
Presentation
Post-grammar
Class test
二、翻译下列句子。
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.
1. When I got there, the bus _________ (go).
2. By the time I got to class, the teacher_____(start) the class.
3.By the time I got to class,the class ______(start) for 5 minutes.
4.我到达公共汽车站之前， 汽车已经离开了。
Before I _____ _____ the bus stop, the bus ____ _____ _____.
had gone
had started
had been on
got to
had already left
现在完成时&过去完成时
时态 参照时间不同 时间状语不同 例句
现在完成时 站在“现在”的角度回顾过去，表示一个从过去持续到现在的动作或事件，对现在仍有影响。 时间状语常用today, this week, this year, recently等 We have lived here for ten years.
过去完成时 站在“过去”的角度回顾一个更远的过去，表示一个事件从这个更远的过去持续到离现在较近的过去。句子中必须有一个表示过去的时间或动作的参照点。 时间状语常用by, by the end of, by the time, before, when等构成的短语或从句 We had lived here for ten years when we had to move last year.
用括号内所给词的适当形式填空
1.I (oversleep) this morning, so I was late for class again.
2.Look at the (burn)house. It was on fire. Let's call the
fire police at once.
3. By the time I got to the train station, the train (leave).
overslept
burning
had left
Let’s practice!
过去完成时与一般过去时的区别
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。
e.g. We have learned 1,000 English words so far.
We had learned 1,000 English words by then.
by last year
now
began to learn
for 4 years
过去完成时与一般过去时的区别
过去完成时的动作发生在“过去的过去”，表示过去某一时间发生的动作或存在的状态。
一般过去时表示过去某时间发生的动作或存在的状态。
e.g. After he had done his homework, he went out to play football.
By the time / When I got home, she had locked the door.
4. My father kept_____ (work) although he didn't feel well. I asked him to have a rest, but he said no.
5. They talked loudly and____ (wake) up the baby.
working
woke
Let’s practice!
Let’s self-check.
学习目标 1 2 3 4 5
能使用目标语言by the time和before谈论过去的事件。
能在复杂的语境中正确使用并区分一般过去时和过去完成时。
能够正确运用过去完成时谈论过去发生的事情、叙述自己的一天。