资源简介

(共16张PPT)
Unit 3
Discovering
Useful
Structures
In this class we will
1. To master the usages of -ing forms serving as the
subject.
2.To use -ing forms freely as the subject in communication and writing.
Learning objectives
1. Swimming is my favourite sport.
主语
2. I enjoy flying kites in spring.
宾语
3. The most challenging part of learning English is speaking.
宾语
表语
Step I Lead-in
观察下面句子并分析画线部分在句中所作的成分
Step I Lead-in
观察下面句子并分析画线部分在句中所作的成分
4. I’d like a house with a swimming pool.
定语
5. Not saying a word, she left.
状语
6. I caught him smoking outside.
宾语
补足语
Step II Presentation
Fill in the blanks and analyse the structure.
①For hundreds of years, __________(look) after reindeer was a way of life for the Sami.
②__________(create) buildings such as these enables us to live in closer harmony with our environment.
③__________(sing) and __________(dance) is her talent.
④__________(sing) and __________(dance) are her hobbies.
looking
Creating
Singing
Summary: 动词-ing形式可以作句子的_______,常将其看作整体, 谓语动词用_______。
主语
主语
dancing
Singing
dancing
主语
主语
单数
单个的动词-ing形式作主语时,谓语动词用单数;
意义不同的两个动词-ing形式并列作主语时,谓语动词用复数;
Step III Exercise
单句语法填空/补全句子
①Travelling to conferences, lectures, workshops, and the like—frequently by plane—_____________________________(view) as important for scientists to get together and exchange information.(2022·浙江1月卷)
②However, ________(be) a third－culture kid is not always easy.
③However, ________________________________________________ could damage local culture.
然而, 将太多人带到偏远地方可能会破坏当地文化。
④_______________________________________ puts me at an advantage over other students.
精通英语使我比其他学生更有优势。
⑤Seeing a lot of the world in one’s youth 　　(be) a good thing.
⑥Hearing how others react to the book you have just read ________(create) an added pleasure.
is viewed／has been viewed
being
bringing too many people to the remote place
Having a good command of English
is
creates
Step IV Presentation
Fill in the blanks and analyse the structure.
①Actually, I understand it’s very painful, but it’s no use __________(get) upset about it all day long.
事实上, 我知道这很痛苦, 但整日为它难过是没有用的。
②Most of us think it is a waste of time _____________(persuade) such a person to join us.
我们大多数人认为说服这样的一个人加入我们是浪费时间。
③It is worthwhile ____________(wander) in this beautiful valley and admiring its splendid waterfall.
在这个美丽的山谷里漫步并且欣赏它壮丽的瀑布是值得的。
Summary: it于某些句型中可以作___________代替动词-ing形式时。
getting
persuading
wandering
形式主语
Step V Summary
用it作形式主语代替动词-ing形式的常用句型:
1. It is＋adj.＋doing sth.
2. It is＋n.＋doing sth.
3. It is no＋n.＋doing sth.
4. There's no sense in doing…做……没有用/没有意义。
It is/feels funny doing sth. 做某事(感觉)很有趣。
It is useless doing sth. 做某事无用。
It is worthwhile doing sth. 做某事是值得的。
It’s a waste of time doing sth.
做某事是浪费时间。
It’s no good/no use/no fun doing sth.
做某事没好处/没用/没意思。
Step VI Exercise
补全句子
①______________________________________________________________ because he is a work addict.
努力说服他去度假是没有用的, 因为他是个工作狂。
②In my opinion, ________________________________________________.
在我看来, 玩电脑游戏是浪费时间。
③It’s no good _______________(complain): they never listen.
④ As the saying goes，it’s no use _________(cry) over spilt milk.
It is no use trying to persuade him to have a holiday
it is a waste of time playing computer games
complaining
crying
Step VII Presentation
①The president’s __________(attend) the meeting himself gave them a great deal of encouragement.
总统出席会议给了他们很大的鼓舞。
②His not __________(defeat) the rivals in the Youth Innovation Competition made him depressed.
他在青年创新比赛中没有击败对手, 这使他很沮丧。
Fill in the blanks and analyse the structure.
attending
defeating
Summary: 当动词-ing形式有自己的逻辑主语时，用动名词的复合结构__________________________________作主语。否定形式为_____________________________________。
名词所有格/形容词性物主代词+V-ing
名词所有格/形容词性物主代词+not+V-ing
Step VIII Exercise
补全句子
①　　　　　　　　　　　　　　　　　　　 made him late for class.
他早上起晚了, 导致他上课迟到了。
②　　　　　　　　　　　　　 didn’t make her worried.
约翰看到了她, 但这并没有使她感到不安。
③　　　　　　　　　　　　 was a great encouragement to us.
他们来帮忙对我们来说是一个很大的鼓舞。
④Weather 　　　　　　(permit), we’ll go out for a picnic tomorrow.
⑤Mr. Wang _______(be) ill, we have to teach ourselves.
His getting up late in the morning
John’s having seen her
Their coming to help
permitting
being
单句语法填空(每小题1分, 共10分)
1. It’s no use 　　　　　　(complain) without taking action.
2. It is useless 　　　　　　(telephone) him. He is not willing to come.
3. 　　　　　　　(invite) to the party was a great honour to the family.
4. Planting many trees 　　(be) very good for our environment.
5. It is a waste time 　　　　　　(warn) him—he is determined to go his own way.
6. 　　　　　　　　(educate) in Peking University is the dream of many students.
Step VIII Exercise
complaining
telephoning
Being invited
is
warning
Being educated
单句语法填空(每小题1分, 共10分)
7. 　　　　　　(know) basic first aid techniques will help you respond quickly to emergencies.
8. He is good at writing, so 　　　(he) winning the competition is no surprise to us.
9. Her 　　　　　　(devote) herself to education makes her an admirable teacher.
10. I think 　　 is a waste of time sitting in front of the television all day.
Step VIII Exercise
Knowing
his
devoting
it
Step VIII Exercise
语法与写作(每小题2分, 共12分)
1. ________________________________________ will do harm to your skin.
长时间暴露在太阳下会伤害你的皮肤。
2. ________________________________ makes me fail to be absorbed in studying. 我哥哥弹吉他使我无法专心学习。
3. ___________________________________________________
troubled him a lot.
他对计算机技术了解不多,这让他很困扰。
4. I think _________________________________________.
我认为在海滩度假很有趣。
5. ____________________________ made the manager worried.
未收到回复使经理很担心。
6. _____________________________________ made him unhappy.
被要求做这么多家务活使他不高兴。
Being exposed to the sun for a long time
My brother’s playing the guitar
His not knowing much about computer technology
it’s fun spending the holiday at the beach
Not having received a reply
Being asked to do so much housework
Step VIII Exercise
用所给单词的适当形式完成下面短文。
Tom spent most of his time 1.____________(search) for information on the Internet each day, which made his parents worried. In his father’s opinion, 2.__________(sit) in front of a computer did great harm to his son’s health.However,he found that it was no use 3.___________ (advise) Tom to spend less time on the Internet,for he wouldn’t listen. Tom told his parents that that was what his job required. His mother wanted him 4.______________ (change) his job,but Tom said that he was fond of it and 5.__________(stay) up late had become his habit.
In my opinion, it is not wise 6.__________(spend) too much time on the Internet. 7.__________(have) a break regularly will be of great help while working at the computer. In addition, 8.__________(set) aside some time to relax is also very important.
searching
sitting
advising
to change
staying
to spend
Having
setting
Thank you!

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