人教版九年级全一册 Unit 12 Life is full of the unexpected. Section A (Grammar Focus-4c) 课件 (共33张PPT)

(共33张PPT)
Unit 12 Life is full of the unexpected.
第三课时 Section A (Grammar Focus～4c)
目录
01
02
名师点拨
课前预习
03
课堂小测
04
课后作业
课前预习
1. 奶油；乳脂 n. ______________________
2. 工作日 n. ______________________
3.豆；豆荚 n. ______________________
4. 市场；集市 n. ______________________
核心单词
cream
workday
bean
market
5.赶到；露面 ____________________
6.在（某时间点）以前 _____________________
常考短语
show up
by the end of
7. 当我到达晚会时，其他人都已经到了。
By the time I _________________________ the party, everyone else ________________________________.
8. 她还没来得及道别，他就进了楼。
Before she ________________________________, he had gone into the building.
典型句子
arrived at
had already showed up
got a chance to say goodbye
名师点拨
1. 定义:过去完成时表示在过去某一时间或某一动作之前发生的动作，它表示动作发生的时间是“过去的过去”，它是一种相对于一般过去时的时态，没有一般过去时就没有过去完成时。表示过去某一时间可用by, before等构成的短语，也可用when, before等引导的从句，或者通过上下文表示。如：
5
过去完成时
By the time I got there, the train had left.当我到那里的时候，火车已经开走了。（“火车开走”发生在“我到那里”之前）
When I woke up, it had stopped raining. 我醒来时，雨已经停了。（“雨停”发生在“我醒来”之前）
He told me that he had written a new book. 他告诉我他写了一本新书。（“写新书”发生在“告诉我”之前）
【注意】在含有状语从句的复合句中，若含有在过去不同的时间发生的两个动作，发生在前的用过去完成时，发生在后的用一般过去时。如：
The meeting had already been on for half an hour before we got to the meeting room. 在我们到会议室之前，会议已经进行半个小时了。
2. 构成:过去完成时是由“助动词had＋动词的过去分词”构成的，had用于各种人称和数。
句式 结构 举例
肯定句 主语+had+动词的过去分词＋其他. By the end of last term, we had learned 5，000 new words. 到上学期末，我们已经学了5 000个新词。
否定句 主语+had+not+动词的过去分词＋其他. They hadn't had breakfast before they arrived at the hotel. 他们到达旅馆前还没有吃早餐。
续表
句式 结构 举例
一般疑问句 Had+主语＋动词的过去分词＋其他 肯定回答：Yes, 主语+had. 否定回答：No, 主语+hadn't. —Had she finished writing the composition by 10：00 this morning？ 到今天上午10点她写完作文了吗
—Yes, she had. / No, she hadn't. 是的，写完了。/ 不，还没有。
特殊 疑问句 特殊疑问词 （组)+had＋主语＋动词的过去分词＋其他 What had they done before the rainstorm came 在暴风雨来临之前他们做了什么
3．过去完成时与一般过去时的区别
(1)时间状语不同：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时间。如:
They had already left when she arrived. 她到达时他们已经离开了。(在她“到达”这一过去的动作之前，他们就已经“离开”了)
I saw him on the street yesterday.昨天我在街上看见他了。(“看见他”这一动作是在“昨天”这一过去的时间发生的)
(2)在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。如:
When I got to the bus stop, the bus had already left. 当我到达车站时，公交车已经开走了。
( )1. By the time I locked the door, I realized I _______my keys at home.
A. leave B. was leaving
C. have left D. had left
专 练
D
( )2. By the time my parents reached home yesterday, I _______ the dinner already.
A. had cooked B. cooked
C. have cooked D. was cooked
A
( )3.I _______ 900 English words by the time I was ten.
A. learned B. was learning
C. had learned D. have learned
( )4. She said she _______ the head teacher already.
A. has seen B. saw
C. will see D. had seen
C
D
( )5.She had written a number of books _______ the end of last year.
A. for B. in
C. by D. at
C
6
by the end of, at the end of与in the end的区别
比较项 含义及用法 举例
by the end of 意为“在（某时间点）以前”，后面接时间 By the end of last year, we had already learned 3，000 English words. 在去年年底前， 我们已经学了3 000个英语单词。
at the end of 意为“在……的结尾; 在……的末端”，后面可接地点或时间 I arrived at the end of April. 我是4月底到达的。
The shop is at the end of the street. 商店在街尾。
比较项 含义及用法 举例
in the end 意为“最后”，同义词组是at last I hope everything will turn out fine in the end. 我希望最后一切结局圆满。
续表
( )1. We will find the school _______ the road.
A. by the end of B. at the end of
C. in the end of D. in the end
( )2. Liu Yu achieved his dream _______.
A. by the end of B. at the end of
C. in the end of D. in the end
专 练
B
D
( )3._______ the holiday, I had spent all my money.
A. By the end of
B. At the end of
C. In the end of
D. In the end
A
一、用所给单词的适当形式填空
1. I had ______________ (read) three English novels by the end of last week.
2. He _________________ (not ride) a horse before that day.
3.Nancy ___________________ (wash) the clothes by the time her mother ______________ (come) home.
课堂小测
read
hadn't ridden
had washed
came
4. Had you ______________(phone) Annie before you ______________ (go) to see her in London
5.The Smiths talked about the market where they _____________________ (buy) beans and cream for three times.
phoned
went
had bought
二、根据要求完成句子，每空一词
6.Luke had been in China for seven years by the end of last year. (就画线部分提问)
______________ ______________ ______________ Luke ______________ in China by the end of last year？
How
long
had
been
7. By ten o'clock yesterday evening, she had finished her homework. (改为否定句)
By ten o'clock yesterday evening, she ______________ ______________ her homework.
hadn't
finished
8. By the time I got home, my father had left for New York. (改为一般疑问句)
______________ ______________ father ______________ ______________ New York by the time you got home.
Had
your
left
for
9. Ann had been at the bus stop for 20 minutes when a bus finally came. (就画线部分提问)
______________ ______________ Ann ______________ for 20 minutes when a bus finally came
Where
had
been
10. Tim had rushed out of the door before I could stop him. (就画线部分提问)
______________ ______________ Tim ______________ before you could stop him？
What
had
done
三、单项填空(语法专练)
( )11. The talk show _______ when Tim turned on the TV.
A. had finished B. finished
C. finishes D. has finished
A
( )12. She _______ in China for ten years before she went to Thailand.
A. has lived B. had lived
C. will live D. lives
B
( )13.Mr. Wang told us he _______ the movie before and it has a happy ending.
A. saw B. sees
C. had seen D. has seen
C
( )14. By the time we got to that restaurant, he _______ dinner.
A. ate B. eats C. has eaten D. had eaten
( )15.When the bell rang, I _______ my exam yet.
A. don't finish B. won't finish
C. haven't finished D. hadn't finished
D
D
课后作业
此部分习题详见独立装订的《课后作业》。请同学们完成《课后作业》Unit 12第三课时的练习题。
THANKS!