課件Unit 3 Discover useful structures 課件人教版（2019）選擇性必修第一冊

1、Book 1 Unit 3 Discover useful structuresThe -ing form as the subject01單擊此處添加標題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.CONTENTS01Discovery02Practice03Appreciation01Dis

2、covery01單擊此處添加標題 Lead-inHave you ever seen these signs?Smoking/ Littering/ Spitting is prohibited/banned.01單擊此處添加標題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

3、makes me feel blessed to be alive.作主語作主語01單擊此處添加標題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 bel

4、ow. Activity2 Find more sentences with the ing form attribute subject adverbial adverbial01單擊此處添加標題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 s

5、mall number of Sami still follow their reindeer into the valleys of Sarek, living in tents or old cottages and enjoying their traditions. subject subject adverbial01單擊此處添加標題8. For example, this morning my breakfast is flat bread warmed over a fire, dried reindeer meat, and some sweet and sour berrie

6、s that I found growing near my 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 complementsubject01單擊此處添加標題功能句子作定語I wake up to the sound of the wind bu

7、ffeting the cloth of my tent. Close by, there are a few reindeer feeding on grass.作主語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, loo

8、king after reindeer was a way of life for the Sami. Being in such a beautiful and wild place makes me feel blessed to be alive. 作狀語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 s

9、pring, a small number of Sami still follow their 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. 作賓補For example, this morning my breakfast is flat bre

10、ad warmed over a fire, dried reindeer meat, and some sweet and sour berries that I found growing near my tent.01單擊此處添加標題 Activity 3 Summary: -ing form as subject一、動詞-ing作主語的三種形式：1.直接放在句首，表示經(jīng)常的、習慣性的動作或狀態(tài)，謂語動詞用單數(shù)。例句：1) Walking is a good form of exercise for both the young and the old.散步對年輕人和老年人都是一種很好的

11、鍛煉方式。2) Watching 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在句首作形式主語，動詞-ing形式后置作真正的主語，用形容詞或名詞作表語。常見的名詞或名詞短語 no use, no good, fun, a waste of time 常見的形容詞 worthwhile, useless 常用-ing形式作主語的句型It +be +

12、a waste of time doing 做是浪費時間的It is/was no good/use doing 做是沒用處的It is/was worthwhile doing 做是值得的There is no doing. 無法; 不允許1. 說服他加入我們就是在浪費時間。2. 在這兒等是沒用的, 我們走吧。3. 在教育上花錢是值得的。4. 和不誠實的人交朋友是沒有好處的。Its a waste of time persuading him to join us.Its no use waiting here. Lets go.It is worthwhile spending money

13、 on education.There is no good making friends with the dishonest men.二. 動詞-ing形式的否定形式動詞-ing形式的否定形式通常是在其前加not, 帶有邏輯主語時，not 應(yīng)放在邏輯主語和-ing 形式之間。1) Not knowing how to use a computer makes it more difficult for him to do his academic research. 不知道如何使用電腦使他更難進行學術(shù)研究。2) Not passing the exam made him disturbed

14、.未通過考試使他煩惱。02 Practice 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 study abroad is both challenging and rewarding.Studying abroad is both challenging and rewarding. Practice 2) It would hardly be po

15、ssible 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 a hiking tour in Sarek in winter would hardly be possible due to the extreme cold. Practice 3) Honestly, it can be both excit

16、ing 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 exciting and terrifying. Practice 4) It is good to adopt a positive attitude, even when things are difficult. To dopt a p

17、ositive attitude is good, even when things are difficult.Adopting a positive attitude is good, even when things are difficult.How does the sentence focus change?The use of -ing forms as subjects puts the action first, making the sentences seem more dynamic.3. Fill in each blank using the -ing form o

18、f 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._ city life, nature, and wetlands makes the park a popular destination

19、 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 flowers _ along the coveringCombiningtakingwalkingexperiencinggr

20、owingbeauty 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 environment. This green, watery world is home to many bird

21、s 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 .limitinggrowing03AppreciationAppreciate the passage about Danxia Geothermal Park in Gansu ProvinceAppreciate the passage about Danxi

22、a 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 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. Forming of the rocks took many millions of years and involved m