1、Discovering Useful Structures Unit 3 Fascinating parksLearning a foreign language is very useful to everyone.Using the right hand to shake hands is a convention in many countries.Traveling around the world is my dream.Seeing is believing.Using the right hand to shake hands is a convention in many co
2、untries.Traveling around the world is my dream.Seeing is believing.subjectLearning a foreign language is very useful to everyone.Find more sentences with the ing form as the subject from the reading passage.Being in such a beautiful and wild place makes me feel blessed to be alive.Even though the su
3、n is brightly shining,telling whether it is morning or night is impossible.Getting here is quite difficult,so apart from the Semi very few people have ever seen Sarek.For hundreds of years,looking after reindeer was a way of life for the Sami.-ing form as subject1.1.直接放在句首，直接放在句首，表示抽象的、经常的表示抽象的、经常的以
4、及习惯性的动作或状态，谓语动词用以及习惯性的动作或状态，谓语动词用单数单数。例句：例句：1)Walking is a good form of exercise for both the young and the old.散步对年轻人和老年人都是一种很好的散步对年轻人和老年人都是一种很好的锻炼方式。锻炼方式。2)Watching news on TV has become a routine for me.3)Going to Hangzhou by train takes about 16 hours.在电视上看新闻已经成了我的一种日常习惯在电视上看新闻已经成了我的一种日常习惯。乘火车去杭
5、州要乘火车去杭州要1616个小时。个小时。4)Asking a womans age is impolite in our country.在我们国家问一个女人的年龄是不礼貌的。在我们国家问一个女人的年龄是不礼貌的。2.it在句首作形式主语，动词在句首作形式主语，动词-ing形式后置形式后置作真正的主语，用形容词或名词作表语作真正的主语，用形容词或名词作表语。no use,no good,fun,hard work,a hard/difficult job,a waste of time 常见的名词或名词短语常见的名词或名词短语 dangerous,worthwhile,useless常见的形
6、容词常见的形容词 1)Its no use making an excuse for this.例句：为这件事找借口是没有用的。为这件事找借口是没有用的。2)Its a waste of time talking about such a useless thing.谈论这样无用的事情简直是浪费时间谈论这样无用的事情简直是浪费时间。3)Its dangerous swimming in the sea on windy days.有风的天气在海里游泳是危险的。有风的天气在海里游泳是危险的。3.3.在在there be结构中作主语结构中作主语：这种结构的意思相当于这种结构的意思相当于“It is
7、 impossible to do”。There beno动词动词ing1)There is no hiding of evil but not to do it.例句例句：若要人不知若要人不知,除非己莫为除非己莫为。2)There is no joking about such a matter.这种事开不得玩笑。这种事开不得玩笑。动词动词-ing形式的否定形式通常是在其前加形式的否定形式通常是在其前加not,带有逻辑主语时，带有逻辑主语时，not 应放在逻辑主语和应放在逻辑主语和-ing 形式之间。形式之间。例句：例句：1)Not knowing how to use a computer
8、 makes it more difficult for him to do his academic research.不知道如何使用电脑使他更难进行不知道如何使用电脑使他更难进行学术研究。学术研究。2)Not having done his homework makes the teacher angry.未完成他的作业让老师很生气。未完成他的作业让老师很生气。动词动词-ing形式的复合结构由物主代词或人称代词宾格，形式的复合结构由物主代词或人称代词宾格，名词所有格或普通格加动词名词所有格或普通格加动词-ing,即即“sb./sb.s+doing”构成。动词构成。动词-ing形式的复合结构
9、实际上是给动词形式的复合结构实际上是给动词-ing形形式加了一个逻辑主语。式加了一个逻辑主语。例句：例句：1)Her coming to help ancouraged all of us.她来帮忙鼓舞了我们所有人。她来帮忙鼓舞了我们所有人。2)Marys being ill made her mother upset.玛丽病了，这使她妈妈很心烦。玛丽病了，这使她妈妈很心烦。3)Wang Mins passing the exam made her very happy王敏通过这次考试使她很高兴。王敏通过这次考试使她很高兴。1.1.动词动词-ing-ing形式形式通常表示抽象动作，往往是普通常
10、表示抽象动作，往往是普通的、一般的行为；通的、一般的行为；且表示已知的事情或经验。且表示已知的事情或经验。2.2.动词不定式动词不定式作主语则表示某次具体动作或行作主语则表示某次具体动作或行为为；且表示未完成的事情或未达成的目的。；且表示未完成的事情或未达成的目的。例句：例句：1)As a child,she felt that visiting sick people was a duty and a pleasure还是个孩子的时侯还是个孩子的时侯,她就觉得探视病人是一种她就觉得探视病人是一种责任责任,也是一种愉悦也是一种愉悦。2)He said,“To go on like this i
11、s useless.”他说他说:“:“继续这样下去是无用的继续这样下去是无用的。”3)Doing nothing is doing evil什么也不做就是什么也不做就是作恶作恶。4)Its an honor for me to be invited to the party.我很荣幸被邀请参加这个晚会我很荣幸被邀请参加这个晚会。It+be+a waste of time doing 做做是浪费时间的是浪费时间的 It is/was no good/use doing 做做是没用处的是没用处的 It is/was hardly/scarcely worth doing 做做不值得不值得 It i
12、s/was worth/worthwhile doing 做做是值得的是值得的 There is no doing.无法无法;不允许不允许例句：例句：1.说服他加入我们就是在浪费时间说服他加入我们就是在浪费时间。2.在这儿等是没用的在这儿等是没用的,我们走吧。我们走吧。3.在教育上花钱是值得的。在教育上花钱是值得的。4.和不诚实的人交朋友是没有好处的。和不诚实的人交朋友是没有好处的。Its a waste of time persuading him to join us.Its no use waiting here.Lets go.It is worthwhile spending mon
13、ey on education.There is no good making friends with the dishonest men.1.Rewrite each of the following sentences using the-ing form as the subject.EXAMPLEIt is challenging yet really fascinating to hike through the mountains in the pathless Sarek.Hiking through the mountains in the pathless Sarek is
14、 challenging yet really fascinating.1)It is both challenging and rewarding to study abroad.2)It would hardly be possible to go on a hiking tour in Sarek in winter due to the extreme cold.Studying abroad is both challenging and rewarding.Going on a hiking tour in Sarek in winterwould hardly be possib
15、le due to the extreme cold.Practice3)Honestly,it can be both exciting and terrifying to explore a vast unknown land.4)It is good to adopt a positive attitude,even when things are difficult.5)It is strongly advised to hire local guides,because they can offer accurate knowledge of Sarek culture and hi
16、story.Honestly,exploring a vast unknown land can be both exciting and terrifying.Adopting a positive attitude is good,even when things are difficult.Hiring local guides is strongly advised,because they can offer accurate knowledge of Sarek culture and history.The use of-ing forms as subjects puts th
17、e action first,making the sentences seem more dynamic.2.Fill in each blank using the-ing form of a verb from the box and state its function.One word will be used bine/cover/grow/take/limit/walk/experienceXixi National Wetland Park,_10 square kilometres in western Hangzhou,is the first national wetla
18、nd park in China._ city life,nature,and wetlands makes the park a popular destination both for tourists and local residents.At Xixi,_a boat tour,_ along paths,and _ local customs and traditions of the villages in this park are at the top of the list of peoples favourite activities.With trees,bushes,
19、and colourful flowers _ along the coveringCombiningtakingwalkingexperiencingattributesubjectsubjectsubjectsubjectgrowingattributeriversides,the park shows different sides of beauty in different seasons.In order to better develop as well as preserve this place,_ human impact on Xixi Wetland was consi
20、dered by the park designers.All the new buildings were designed in a traditional way to fit into the natural environment.This green,watery world is home to many birds and fishes.With trees _in the shallows,the wetland is a natural system for providing clean water and producing oxygen,which makes it
21、the“green lungs of Hangzhou.growinglimitingsubjectattributecombine/cover/grow/take/limit/walk/experience3.Finish the following sentences.1)和他争论真是浪费时间。和他争论真是浪费时间。_ arguing with him.2)他早上起晚了，这导致他上课迟到了。他早上起晚了，这导致他上课迟到了。_ in the morning made him late for class.3)我哥哥弹吉他使我无法专心学习。我哥哥弹吉他使我无法专心学习。My brothers
22、 playing the guitar makes me _ studying.Its a waste of timeHis getting up lateget down to3.Finish the following sentences.4)在村民的引路下，我们很快找到了那个山洞。在村民的引路下，我们很快找到了那个山洞。_ by the local villager makes us find the strange cave quickly.5)饭后散步是一个很好的习惯。饭后散步是一个很好的习惯。_ is a very good habit.Having been led the wa
23、yWalking after a meal4.Choose a place in your city or town as a destination for a school trip.Use the-ing forms to write a paragraph.The following expressions may help you:Take a trip to.It covers.Such as.The natural beauty An unforgettable experience Share with With the colourful scenery and wonder
24、ful hiking trails,taking a trip to Danxia Geothermal Park in Gansu Province is one of the highlights of any trip to the northwestern part of China.Youre welcome to visit!It is near the city of Zhangye in Gansu Province,my hometown and where my school is,and it covers about 510 square kilometres.Form
25、ing of the rocks took many millions of years and involved many kinds of erosion such as wind and water on the red sandstone.What encourages thousands of people to come here each year is the natural beauty of the rocks.Walking around the park will allow you to see iridescent tall peaks,deep cave holes and stone halls.Visiting the colourful,magical rock formations in person will surely be an unforgettable experience and one you will share with friends and family for years to come.Sample Writingn.侵蚀，腐蚀；削侵蚀，腐蚀；削弱，降低；糜烂，弱，降低；糜烂，溃疡溃疡adj.（因光线不同（因光线不同而）色彩斑斓的，而）色彩斑斓的，彩虹色的彩虹色的Thank you!
