Unit 3 Inventors and inventions 过去分词 课件(28张)

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名称 Unit 3 Inventors and inventions 过去分词 课件(28张)
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更新时间 2018-07-28 19:10:48

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课件28张PPT。 Learning about language :
复习过去分词 Step 1 Lead-in
分词形式:有现在分词和过去分词。
过去分词只有_________: done。一种形式 现在分词则有:(以do为例) doing being done having done having been done 不定式则有:(以do为例) to do to be done to have done to have been done to be doing 无to have been doing 无Step 2 过去分词的基本用法:
看下面的例句,指出过去分词在句中作什么句子成分。
1. Polluted air and water are harmful to people’s
health. ______
2. He looked worried after reading the letter.
______
3. I’ll have my hair cut. ___________
4. Given more time, we can do the work much
better. ______定语 表语 宾语补足语 状语 Step 3 Ⅰ
★过去分词作定语时,其语法功能相当于一个定
语从句。★单个过去分词作定语时,通常置于被修饰的名
词之前;过去分词短语作定语时,通常置于被修
饰的名词之后;★注意不及物动词的过去分词不表示被动,只表
动作的完成。 如: boiled water(开水); fallen
leaves(落叶) ; the risen sun(升起的太阳)等。练一练
① The old man, _____ abroad for twenty years, is on the
way back to his motherland.
A. to work B. working
C. to have worked D. having worked
② The cars_____ in Beijing are as good as those _____ in
Shanghai.
A. produce; produce B. produced; produced
C. produced; producing D. producing; producing
③ The flowers ______ sweet in the botanic garden attract
the visitors to the beauty of nature.
A. to smell B. smelling
C. smelt D. to be smeltDBB④ Henry can’t attend the party _____ at Tom’s
house at present because he is preparing for the
speech at the party _____ at Marie’s house.
A. being held; to be held B. held; being held
C. to be held; held D. to be held; to be held
⑤ The life of the wounded soldier ____ is still in
danger.
A. operating on B. operated on
C. having been operated on D. to operate onAB 归纳总结:
(1)过去分词修饰something, everything, anything, nobody, nothing等不定代词或指示代词those等时,要放在这些词 , 例如②中第二空;
(2)过去分词作定语表示一个 的被动动作或者没有时间性的状态,例如②中第一空和⑤;后面 已经发生 (3)现在分词的一般被动式作定语时,表示一个
的被动动作,例如④中第一空;
(4)不定式的被动式则指动作的 ,例如④中第二空。
(5)现在分词的完成被动式在句中多作状语, ,例如⑤中C项。尚未发生 正在发生 不能作定语 Ⅱ
★过去分词作表语并无完成或被动之意,而是表示主语的状态或思想感情等。 ★过去分词作表语不要与被动语态混为一体。过去分词作表语往往表示主语的一种状态,而被动语态则表示一个被动的动作。
My glasses were broken. (状态)
My glasses were broken by my son. (动作)★过去分词作表语时,系动词除了是be之外,还可以是feel, remain, seem, look, sound, become等。练一练
Tom: Hi, you look 1 (tire).
Jerry: I am. I’m totally 2 (burn) out.
Tom: Why? What have you been doing?
Jerry: I’ve been doing my homework all day. I’m getting very
3 (bore) with it.
Tom: That’s 4 (disappoint). I think you’ll be
5 (please) when it’s finished.
Jerry: Yes, you’re right. But I still have plenty of work to do.
School is too 6 (challenge).
Tom: When do you think you will finish your homework?
Jerry: In about two hours, I think.
Tom: Don’t worry. Just think of how 7 (relax) you’ll
be when it’s finished. tiredburnt/burnedbored disappointing pleased challenging relaxed 归纳总结:
(1)过去分词作表语含有_____的意思;而现在分词作表语具有_____的意思。
(2)动词-ing形式多和表____的名词连用,例如第 4,6空;动词的-ed形式多和____连用,例如第1,2,3,5,7空。 Ⅲ ★过去分词可以作宾语补足语,能用作宾语补足语的过去分词一般都是及物动词,表示被动或已完成意义,有时侯两者兼而有之。被动主动物人★作宾语补足语的过去分词与宾语有逻辑上的动宾关系,即宾语是过去分词动作的对象。不定式和分词都可以用作补足语,但是用法和意义都有所不同。请看下表: 主谓 现在 分词 playing正在进行 being built 动作过程 play 被动 过去分词 seen 主谓 已完成状态 changed 归纳总结:
(1)表示感觉的动词hear, see, watch, notice, feel等和使役动词have, make, keep, leave等即可以接分词也可以接不定式。这些动词接现在分词表示 _____、______的动作,例如第1句;接过去分词表示_____、_____的动作,例如第4句;而接不定式作宾补则表示动作发生了,指事情的_______,例如第3句。
主动 进行 被动 完成 全过程 (2)可以带过去分词作宾补的动词有:
1. see, hear, watch, think, find等表示_______________的动词。
2. make, get, have, leave等表示“______”意义的动词。
3. like, want, wish, order等表示“___________”等意义的动词。感觉和心理状态 致使 希望、要求 Ⅳ
★过去分词作状语时,其逻辑主语是主句的主
语,且与主语之间存在着被动关系。★现在分词作状语时,其逻辑主语与动词形式所表示的动作之间是主动关系。★过去分词作状语可表示时间、原因、让步、结果、方式、条件等。练一练
1. Used the book, I find it useful.
2. Deeply moving by his words, the old man
agreed to his request.
3. When asking what he was going to be, the boy
said that he wanted to be a scientist in the future.
4. His eyes still fixing on the lamp, he did some
serious thinking.
5. Compared the new building with the old one, we
find that the new one looks more beautiful.
6. The soldiers lay on the ground, being covered
with nothing. 1. Used the book, I find it useful.
2. Deeply moving by his words, the old man agreed to his request.
3. When asking what he was going to be, the boy said that he wanted to be a scientist in the future.
4. His eyes still fixing on the lamp, he did some
serious thinking.
5. Compared the new building with the old one, we
find that the new one looks more beautiful.
6. The soldiers lay on the ground, being covered
with nothing. Using moved asked fixedComparing covered归纳总结:
(1)过去分词作状语时,前边可以加when, while, if, unless, once, as if, though, wherever等连词, 构成“_______________”形式, 可以理解为省略了主语和Be, 但分词的主语和主句的主语必须为 _____ 。例如3。连词 + 过去分词一个 逻辑主语 +过去分词过去分词(2)过去分词的独立主格结构作状语。如果过去分词的逻辑主语不是句子的主语,就要用过去分词的独立主格结构作状语。其结构是 ___________
_________ ”。例如4。(3)方式状语不用现在分词的被动式,而用
________,例如6。Step 4 Choice
The pilot asked all the passengers on board to remain
_____ as the plane was making a landing.
A. seat B. seating C. seated D. to be seating
2. Having a trip abroad is certainly good for the old
couple, but it remains _____ whether they will enjoy it.
A. to see B. to be seen C. seeing D. seen
3. Cleaning women in big cities usually get _____ by the
hour.
A. pay B. paying C. paid D. to pay 4. It is believed that if a book is _____, it will surely _____
the readers.
A. interested; interest B. interesting; be interested
C. interested; be interesting D. interesting; interest
5. —I’m very ____ with my own cooking. It looks nice
and smells delicious.
—Mm, it does have a ____ smell.
A. pleasant; pleased B. pleased; pleased
C. pleasant; pleasant D. pleased; pleasant
6. Don’t leave the water ____ while you brush your teeth.
A. run B. running C. being run D. to run7. A cook will be immediately fired if he is found _____ in
the kitchen.
A. smoke B. smoking C. to smoke D. smoked
8. The managers discussed the plan that they would like
to see ____ the next year.
A. carry out B. carrying out
C. carried out D. to carry out
9. An army spokesman stressed that all the soldiers had been ordered ____ clear warnings before firing any shots.
A. to issue B. being issued
C. to have issued D. to be issued 10. The _____ boy was last seen _____ near the East Lake.
A. missing; playing B. missing; play
C. missed; played D. missed; to playStep 5 练一练 写作
假定你是李华向一位美国朋友Tom介绍游览长城,请根据以下要点向他介绍一下长城的历史和现状。
写作内容:1.介绍长城的概况;(是界世奇观之一,汉语常叫“万里长城”);
2.长城的历史(始建于春秋战国时期,公元前221年,秦始皇令人把城墙连接起来。);
3 每天游客如织。
写作要求: 1.词数100左右;
2.可以适当增加细节,以使行文连贯。
写作提示: the Ten-thousand-Li Great Wall 万里长城
Spring and Autumn Period 春秋战国时期写作提示:
the Ten-thousand-Li Great Wall 万里长城
Spring and Autumn Period 春秋战国时期
One possible version:
Dear Tom,
It is my honor to introduce the Great Wall to you.
The Great Wall, called in Chinese “ the Ten-thousand-li Great wall”, is more than 6 000 kilometers long, four to five meters wide and six to seven meters high, which is one of the wonders of the world.
First built during the Spring and Autumn Period, the Great Wall has often been added to, rebuilt and repaired later. In 221 BC, Emperor Qin Shihuang had all the walls joined up. All the work done by hand, thousands of people working on the wall died and were buried under the wall because of bad conditions.
The Great Wall, greeting many visitors from all over the world every day, is the pride of the Chinese people.The Great Wall, greeting many visitors from all over the world every day, is the pride of the Chinese people.
Yours,
Li HuaStep 6 Homework
Polish the wring Thank you for listening , Goodbye!