(共25张PPT)
选择性必修三Unit 5
Learning from nature
Review: non-finite forms as subject, object and predicative
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To review the usage of non-finite forms as subject, object and predicative
To use non-finite forms as subject, object and predicative
目标一:To review the usage of non-finite forms as subject, object and predicative
Activity 1: Look at the sentences from the reading passage and answer the questions.
a Today, architects continue to explore ways to capture the beauty of natural forms,...
b... it appears to float above the waterfront promenade and the water that surrounds it.
c Visitors are often amazed to find themselves in an urban building that so truly captures the beauty of natural forms.
d Creating buildings such as these enables us to live in closer harmony with our environment.
1 Look at the “to do” structures in sentences (a) and (b). Do they serve the same function in each sentence
No, they don’t. “To explore” in sentence (a) serves as object and “to float” in sentence (b) serves as predicative.
2 In sentence (c), is the -ed form used as an adjective or a past participle Why does the author use the -ed form other than the -ing form
The -ed form is used as an adjective. The author wants to describe the visitors’ feeling, so the -ed form is used.
3 What is the function of the -ing form in sentence (d)
The -ing form is used as subject.
Now look for more sentences with these structures in the reading passage.
In fact, we are so used to them that we may even take them for granted without realising how much inspiration they have given us.It is natural to think in this way,...People whose interest is exploring the relationship...To use biomimicry is to create structures...
Activity 2: 不定式和动名词作主语
非谓语动词只有不定式和动名词可以作主语
1. To form a good habit of learning is important for us students.
2. It is important for you to walk after supper.
3. It is kind of you to take me to the station.
4. It is everyone’s duty to protect our earth, the only home for us.
5. It talks half an hour to walk from here to my school.
6. Understanding your own needs and styles of communication is an important as learrning to convey your affection and emotions.
7. It is no use waiting here. You should take acttion immediately.
8. It is a waste of time arguing with him about the matter.
温馨提示:
1. 不定式和动名词(短语)作主语,谓语为单数形式。不定式多表示具体的、一次性的或尚未做的动作。动名词往往表示经常的、泛指的或抽象的动作。
2. 有时为了句子的平衡或出现形式主语it,而把真正的不定式或动名词放在后面。
it作形式主语,不定式为真正主语,常有一下几种形式:
● It +be +adj. (of/for sb.) to do sth. 如形容词是一些表示人性格、特征,则用of,如 kind, nice, clever, wise, bright, foolish, silly, stupic, thoughtful, considerate, lazy, polite的等。其它的用for,如important, necessary, likely, convenient等。
● It + be +a/an +n. + to do
● It + takes (+sb. ) +some time/courage/patient/... to do sth.
● It’s up to sb. to do sth.
3. 动名词(短语)作真正主语,it作形式主语的几种形式。
● It is no use/on good doing sth.
● It’s fun doing sth.
● It’s worth doing sth.
● It’s a waste of time doing sth
4. 不定式作主语很多情况下可以和动名词(短语)替换,但在一些固定说法中,或者表示较强的对比时不能替换。如:
1)To see is to believe. (眼见为实。 =Seeing is believing.)
2)To err is human. 人非圣贤,孰能无过。
3)To respect others is to be respected. 尊重别人就是尊重自己。
4)To forgive is to be forgiven. 原谅他人就是原谅自己。
Activity 3 不定式和动名词作宾语
非谓语动词只有不定式和动名词可以作宾语
1. 动词不定式(短语)作宾语
A 直接不定时作宾语的动词常有:decide, learn, determine, expect, hope, wish, refuse, manage, care, pretend, offer, promise, choose, plan, agree, ask, beg, help, fail, attempt, strike, threaten, wait, happen等。
1)One can always manage to do more things, no matter how tight his schedule is.
B 能解“疑问词+to do”的动词(短语)有:decide, know, consider, forget, learn, remember, shw, find out, understand, see, wonder, hear, explain, tell等。
2)He still didn’t understand how to operate the machine.
C 当不定式(短语)作宾语时,常用it作形式宾语,不大不定时短语放在后面,可接it作形式宾语的动词有find, feel, make, think, consider, believe等。
3)I find it very difficult to communicate with him in English.
2. 动名词作宾语
A 只接动名词(短语)作宾语的动词及短语动词有:admit, avoid, appreciete, consider, enjoy, escape, finish, complete, imagine, mind, miss, practise, risk, suggest, advise, delay, resist, keep, keep on, feel like, can not help, give up, put off, look forward, to, lead, to, dream of, insist on等。
1)I really appreciate being selected to perform in the New Year Gala.
2) When he doesn’t feel like talking, we just let him be.
B. 在动词allow, perfit, advise, encourage, forbit等词,后面有sb./sth,则用不定式, 没有sb./sth.作直接用动名词。
3) They don’t allow smoking in the hall. They can allow people to smoke in the smoking sections.
4)表示 “某人/某物需要(need, want, require)被干什么”,或某人值得(deserve)被干什么,用动名词的主动式或不定时的被动式。
4)The flowers need to be watered/watering.
5. 有些动词既可以用不定式作宾语,也可以用动名词作宾语,其含义差别不大,如begin, start, coontinue, like, love, hate, prefer等。
5)He began to show us how to cut paper.
6有些动词后给不定式和动名词意义完全不一样,如remember, forget, regret, try, mean, stop等。关于这一点在必修二几个单元已经讲过,此处不再详细解释。
5) I regret to inform you that your contract will not be renewed.
6) I regret not taking his advice yesterday.
7 当宾补为no use/no good/a waste of time/fun等,可以用it作形式宾语,动名词(短语)防砸后面。
7)We think it no use arguing with him about it.
Activity 4 非谓语作表语
1. 不定式作表语常表示将来动作或解释说明主语的内容,其主语通常是wish, idea, task, purpose, duty, aim, hope, job, plan, thing,step等 或what引导主语从句。
1)What I would suggest is to start work at once.
2)The next step is to make sure that you know exactly what is required.
温馨提示: 不定式作表语,来回答主语中的实义动词do/did/does/done,则to 可省略。
All you need to do now is (to) live each day with passion.
2. 动名词(短语)作表语相当于名词,用于解释主语的内容,往往表示主语所具有的特征,且和主语往往可以互换。
3)My favorite sport is swimming. (=Swimming is my favorite sport)
3. 分词(短语)作表语
现在分词(短语)作表语,往往具有形容词的性质,说明主语的性质特点,意为“令人……的”。过去分词作表语,往往表示主语所处的状态,意为“(人)感到……的”
3) The result of the game was disappointing. We felt disappointed at the news.
温馨提示:常见的动词用:excite, interest, worry, disappoint, surprise, amaze, astonish, frighten, terrify, puzzle, confuse, satisfy, please, amuse, entertain, convience, depress, encourage, disgust, refresh, embassass, tire, bore, exhaust, move, touch等。
4. “get done”结构往往表示一种状态,或者被动概念。如get polluted/lost/separated/paid/dressed/changed...
5) Don’t play by the river in case you fall in and get drowned.
目标二: To use non-finite forms as subject, object and predicative
Activity 1: Complete the passage with the correct form of the verbs in brackets.
1 __________ (draw) inspiration from nature is a tradition that goes back centuries. Nowhere is this better illustrated than in the beautiful Lingering Garden of Suzhou. The main principle of its design is 2 _____________________ (recreate) natural landscapes in miniature. First established in the Ming Dynasty, the original garden contained a rockery to symbolise Tiantai Mountain. Pine and bamboo groves were added later, along with a pond and an island. Visitors would be 3 __________ (astonish) to find the garden modeled closely on natural features. Visitors are also supposed 4 __________ (explore) it scene-by-scene. This could vary from a view of a pond and the splashing of fish, to a tree in blossom, a pagoda or a moon-shaped gate.
Drawing
to recreate / recreating
astonished
to explore
Activity 2: Read the information below and write a paragraph introducing the 24 Solar Terms with the words in the box. Use the structures you have learnt in this unit where appropriate.
learn determine
show amaze use
Learning from nature’s wisdom led farmers in Ancient China to create the 24 Solar Terms...
Learning from nature’s wisdom led farmers in Ancient China to create the 24 Solar Terms, which were based on observation of changes of seasons, astronomy and other natural phenomena. Indicating changes in weather conditions, the 24 Solar Terms remain of particular importance to farmers for guiding their practices. The first term is known as “Beginning of Spring”, and marks when days become longer and the temperature begins to increase. Nowadays, the 24 Solar Terms not only apply to farming, but also guide Chinese people in everyday life. So varied are the functions of the Solar Terms and their contributions to cultural identity, that in 2016, they were added to UNESCO’s List of Intangible Cultural Heritage.
Activity 3: Work in pairs. Talk about one of the Solar Terms using the structures you have learnt in this unit where appropriate.
立春 the Beginning of Spring (1st solar term)雨水 Rain Water (2nd solar term) 惊蛰 the Waking of Insects (3rd solar term) 春分 the Spring Equinox (4th solar term) 清明 Pure Brightness (5th solar term) 谷雨 Grain Rain (6th solar term) 立夏 the Beginning of Summer (7th solar term) 小满 Lesser Fullness of Grain (8th solar term) 芒种 Grain in Beard (9th solar term)夏至 the Summer Solstice (10th solar term) 小暑 Lesser Heat (11th solar term)大暑 Greater Heat (12th solar term)
立秋 the Beginning of Autumn (13th solar term)处暑 the End of Heat (14th solar term)白露 White Dew (15th solar term)秋分 the Autumn Equinox (16th solar term) 寒露 Cold Dew (17th solar term) 霜降 Frost’s Descent (18th solar term) 立冬 the Beginning of Winter (19th solar term) 小雪 Lesser Snow (20th solar term) 大雪 Greater Snow (21st solar term) 冬至 the Winter Solstice (22nd solar term) 小寒 Lesser Cold (23rd solar term)大寒 Greater Cold (24th solar term)
1 Can you recall the usage of non-finite forms as subject, object and predicative 2 Can you use the structures to describe another Solar Term
Activity 4 Practise
一、语法填空
1. After _____(spend) some time looking at all the defensive equipment at the wall, we decided it was time for some action and what better than to ride on a piect of history.
2. We all know the saying that it is no use ____(cry) over spilt milk.
3. Do you remember _____(praise) by our teacher when you stopped ____(come) late for class.
4. I heard a passager behind me shouting to the driver, but he refused ____(stop) until we reached the next stop.
5. We think it quite important language for us _____(learn) a foreign language well.
6. As a result of the serious floor, two-thirds of the buildings in the area needed ____(repair).
7. I am very _____(satisfy) that my son succeeded in passing his driving test at the first attempt.
8. The result was really ______(disappoint). I only got a C in my composition that had taken me much time.
9. One of the most important things in life is ____(have) a specific aim and then try hard towards it.
10. It took years of work _____(reduce) the industrial pollution and clearn the water.
11. He meant ____(invite) Monica, but he forgot ____(inform) her of the change of address.
12. The patient was not allowed _____(smoke) any more.
13. _____(return) to a book you have read many times can feel like drinks with an old friend.
14. It is possible _____(walk) or bike the entire 14 kilometers.
15. He who plays wih fire gets _____(burn).
16. I enjoy _____(sit) close to the window and _____(look) at the view in my spare time.
17. When it comes to ____(speak) in public , no on can match him.
18. You can never imagine what difficulty we had _____(find) the missing kid.
二、完成句子
1. 我希望能被理想大学录取。
What I hoped was ______________________________________ .
2. 眼神交流时八婆圣人之间隔阂的有效方式。(make)
________________________________is an effective way to break down barries between strangers.
3. 很荣幸被邀请在这里发表演说。
It is a great honor ____________________________here.
4. 他们发现在两天之内完成他们的工作非常困难。
They ____________________________________their work in tow days.
5. 在你离开房间之前,记得把灯关掉。
_________________________________________before you leave the room.
6. 他们在森里里迷路了(get),不知道该怎么办。
They ________________in the forest and they didn’t know ______________.
7. 和他解释这件是浪费时间。
It is a waste of time _________________.
8. 听到这个消息,我太兴奋了。
Hearing the news, I _____________________.
Key
一、
1. spending 2. crying 3. being praised; coming 4. to stop 5. to learn 6. repairing/to be repaired 7. satisfied 8. disappointing 9. to have 10. to reduce 11. to invite; to inform 12. to smoke 13. Returning 14. to walk 15. burnt 16. sitting; looking 17. speaking 18. finding
二、
1. to be admitted (in)to 2. Making eye contact 3. to be invited here to make a speech
4. found it difficult to finish 5. Remember to turn off the lights 6. They got lost; how to do
7. explaining it to them 8. was too excited.
Thank you!