Unit 3 Discover useful structures (ppt课件)-2022新人教版（2019）《高中英语》选择性必修第一册.pptx

1、Book 1 Unit 3 Discover useful structuresThe-ing form as the subject单 击 此 处 添 加 标 题In this class,you will1.recognize and summarize the function and meaning of the-ing form as the subject;2.use the-ing form as the subject to describe a place in writing.010203D i s c o v e r y单 击 此 处 添 加 标 题Lead-inHave

2、 you ever seen these signs?Smoking/Littering/Spitting is prohibited/banned.单 击 此 处 添 加 标 题Activity1 Identify the function of-ing formIdentify the function of the-ing form in the sentence below.1.Getting here is quite difficult.2.Being in such a beautiful and wild place makes me feel blessed to be al

3、ive.作主语作主语作主语作主语单 击 此 处 添 加 标 题1.I wake up to the sound of the wind buffeting the cloth of my tent.2.Even though the sun is brightly shining,telling whether it is morning or night is impossible.4.Spreading out before me,branches of the Rapa River flow through the valley below.Find more sentences wit

4、h the ing formActivity2 attribute subject adverbial adverbial单 击 此 处 添 加 标 题5.Getting here is quite difficult,so apart from the Sami very few people have ever seen Sarek.6.For hundreds of years,looking after reindeer was a way of life for the Sami.7.But every spring,a small number of Sami still foll

5、ow their reindeer into the valleys of Sarek,living in tents or old cottages and enjoying their traditions.subject subject adverbial单 击 此 处 添 加 标 题8.For example,this morning my breakfast is flat bread warmed over a fire,dried reindeer meat,and some sweet and sour berries that I found growing near my

6、tent.9.Being in such a beautiful and wild place makes me feel blessed to be alive.10.Here I am,alone under this broad sky,breathing the fresh air,and enjoying this great adventure.adverbial complementsubject单 击 此 处 添 加 标 题功能功能句子句子作定语I wake up to the sound of the wind buffeting the cloth of my tent.C

7、lose by,there are a few reindeer feeding on grass.作主语Even though the sun is brightly shining,telling whether it is morning or night is impossible.Getting here is quite difficult,so apart from the Sami very few people have ever seen Sarek.For hundreds of years,looking after reindeer was a way of life

8、 for the Sami.Being in such a beautiful and wild place makes me feel blessed to be alive.作状语Spreading out before me,branches of the Rapa River flow through the valley below.Around 9,000 years ago,this ice melted,leaving behind about 100 glaciers.But every spring,a small number of Sami still follow t

9、heir reindeer into the valleys of Sarek,living in tents or old cottages and enjoying their traditions.Here I am,alone under this broad sky,breathing the fresh air,and enjoying this great adventure.作宾补For example,this morning my breakfast is flat bread warmed over a fire,dried reindeer meat,and some

10、sweet and sour berries that I found growing near my tent.单 击 此 处 添 加 标 题 Activity 3 Summary:-ing form as subject1.1.直接放在句首，直接放在句首，表示经常的、习惯性表示经常的、习惯性的动作或状态，谓语动词用的动作或状态，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锻炼方式。散步对年轻人和老年人都是一种很好的锻炼方式。2)Wat

11、ching news on TV has become a routine for me.3)Going to Hangzhou by train takes about 16 hours.4)Asking a womans age is impolite in our country.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。常见的名词或名词短语常见的名词或名词短语 no use,no good,fun,a waste of time 常见的形容词常见的形容词 worthwhile,use

12、less 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 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 persua

13、ding him to join us.Its no use waiting here.Lets go.It is worthwhile spending money on education.There is no good making friends with the dishonest men.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,带有逻辑带有逻辑主语时，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。1)Not knowing how to use a computer makes it more difficu

14、lt for him to do his academic research.不知道如何使用电脑使他更难进行学术研究。不知道如何使用电脑使他更难进行学术研究。2)Not passing the exam made him disturbed.未通过考试使他烦恼。未通过考试使他烦恼。P r a c t i c e Practice2 Rewrite each of the following sentences using the-ing form as the subject.1)It is both challenging and rewarding to study abroad.To s

15、tudy abroad is both challenging and rewarding.Studying abroad is both challenging and rewarding.Practice 2)It would hardly be possible to go on a hiking tour in Sarek in winter due to the extreme cold.To go on a hiking tour in Sarek in winter would hardly be possible due to the extreme cold.Going on

16、 a hiking tour in Sarek in winter would hardly be possible due to the extreme cold.Practice 3)Honestly,it can be both exciting and terrifying to explore a vast unknown land.Honestly,to explore a vast unknown land can be both exciting and terrifying.Honestly,exploring a vast unknown land can be both

17、exciting and terrifying.Practice 4)It is good to adopt a positive attitude,even when things are difficult.To dopt a positive attitude is good,even when things are difficult.Adopting a positive attitude is good,even when things are difficult.The use of-ing forms as subjects puts the action first,maki

18、ng the sentences seem more dynamic.3.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 wetland park in China._

19、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,and colourful flowe

20、rs _ along the coveringCombiningtakingwalkingexperiencinggrowingbeauty in different seasons.In order to better develop as well as preserve this place,_ human impact on Xixi Wetland was considered by the park designers.All the new buildings were designed in a traditional way to fit into the natural e

21、nvironment.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 the“green lungs of Hangzhou.limitinggrowingAppreciationAppreciate the passage about Danxia Geothermal Park in

22、Gansu ProvinceAppreciate the passage about Danxia Geothermal Park in Gansu ProvinceSample WritingWith the colourful scenery and wonderful 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 vi

23、sit!It is near the city of Zhangye in Gansu Province,my hometown and where my school is,and it covers about 510 square kilometres.Forming of the rocks took many millions of years and involved many kinds of erosion such as wind and water on the red sandstone.Appreciate the passage about Danxia Geothe

24、rmal Park in Gansu ProvinceWhat 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 unfo

25、rgettable experience and one you will share with friends and family for years to come.HomeworkChoose 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 beautyAn unforgettable experienceShare with