Unit 3 Discover Useful Structuresppt课件-2020-2021学年高中英语人教版（2019）选择性必修第一册.pptx

1、人教版英语选择性必修第一册人教版英语选择性必修第一册Unit 3 Fascinating Parks Period 3 Learning about language 动词-ing形式作主语1. Even though the sun is brightly shining, _ (tell) whether it is morning or night is impossible. (教材P26)2. _(get) here is quite difficult, so apart from the Sami very few people have ever seen Sarek. (教材

2、P26)tellingGettingFill in the blanks and identify the function of the -ing form 动词-ing形式作主语3. For hundreds of years, _ (look) after reindeer was a way of life for the Sami. (教材P26)4. _ (be) in such a beautiful and wild place makes me feel blessed to be alive.(教材P27)BeinglookingCan you find more sent

3、ences with the -ing form from the reading passage and state their functions ? 动词-ing形式作主语动词-ing形式作主语1. I wake up to the sound of the wind buffeting the cloth of my tent. (attribute)2. Even though the sun is brightly shining, telling whether it is morning or night is impossible. (subject)3. Checking

4、my watch, I see that it is 7:30 a.m. (adverbial)4. Spreading out before me, branches of the Rapa River flow through the valley below. (adverbial)5. Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek. (subject)6. For hundreds of years, looking after reindeer

5、was a way of life for the Sami. (subject)动词-ing形式作主语7. But every spring, a small number of Sami still follow their reindeer into the valleys of Sarek, living in tents or old cottages and enjoying their traditions. (adverbials)8. For example, this morning my breakfast is flat bread warmed over a fire

6、, dried reindeer meat, and some sweet and sour berries that I found growing near my tent. (complement)9. Being in such a beautiful and wild place makes me feel blessed to be alive. (subject)10. Here I am, alone under this broad sky, breathing the fresh air, and enjoying this great adventure. (adverb

7、ials)动词-ing形式作主语表示经常性或习惯性的动作且常放句首形容词性物主代词+动词-ing名词所有格+动词-ing动词-ing作 主 语动词-ing的复合结构Its a waste time doing sthIts useless/no use/no good doing sthIts no fun doing sthit 作形式主语动词原形+-ing基本构成基本用法动词-ing与动词不定式作主语的区别动词-ing形式作主语1. 动词动词-ing形式作主语，表示一般或抽象的习惯性行为，形式作主语，表示一般或抽象的习惯性行为，谓语动词用单数。谓语动词用单数。 eg Reading alo

8、ud is very important for us to learn a foreign language. Going to bed early and getting up early is considered to be a good habit.2. 有时为了句子平衡，避免头重脚轻, 用it作形式主语，而把真正的主语(动词-ing短语)后置。常见的固定句型有：动词-ing形式作主语It + be + a waste of time doing 做做是是浪费时间的浪费时间的It is/was no good/use/fun doing 做做是没益是没益/用处用处/意思的意思的It

9、is/was useless/worthwhile doing 做做是没用是没用/值得的值得的2. 有时为了句子平衡，有时为了句子平衡，避免头重脚轻避免头重脚轻, 用用it作形式主语，而把作形式主语，而把真正的主语真正的主语(动词动词-ing短语短语)后置。常见的固后置。常见的固定句型有：定句型有：It is no use/no good crying over spilt milk .It is a waste of time persuading such a person to join us.1 It is both challenging and rewarding to study

10、 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 winter would hardly be possible due to the extreme cold.3 Honestly, it can be both exciting and terrifying to

11、explore a vast unknown land.Honestly, exploring a vast unknown land can be both exciting and terrifying.Rewrite the sentences using the -ing form as the subject动词-ing形式作主语4 It is good to adopt a positive attitude, even when things are difficult.Adopting a positive attitude is good, even when things

12、are difficult.5 It is strongly advised to hire local guides, because they can offer accurate knowledge of Sarek culture and history. Hiring local guides is strongly advised, because they can offer accurate knowledge of Sarek culture and history.动词-ing形式作主语3. 动词-ing的复合结构作主语时，通常有两种形式：(1) 形容词性物主代词+动词-i

13、ng(2) 名词所有格+动词-ingHis being late again made his teacher very angry. 他再次迟到让老师很生气。Mikes returning to work is a great help to his family. 麦克回来工作对他全家来说都是一大帮助。动词-ing形式作主语4. 动词-ing与动词不定式作主语的区别： 动词-ing作主语，常常表示抽象的习惯性或经常性的动作。 而不定式一般表示一次性、具体性的行为。Delivering newspapers is his job. 送报纸是他的工作。To deliver newspapers

14、 is his job today. 送报纸是他今天的工作。5. 动词-ing 形式的时态和语态完成句子琳达已经被我的狗咬了，所以她拒绝再和我玩。_by my dog made Linda reufse to play with me again. 有时候被惩罚是一件好事。Sometimes _ may be a good thing. being punishedHaving been bittenI 完成句子完成句子 Xixi National Wetland Park, _ (cover) 10 km2 in western Hangzhou, is the first national

15、 wetland park in China. _ (combine) city life, nature and wetland makes the park a popular destination both for foreign visitors and local residents. At Xixi, _ (take) a boat ride, _(walk) along path, and _(experience) local customes and traditions of the villages in this park are at the top of the

16、list of peoples favourate activities. With trees, bushes, and colourful flowers _ (grow)along the riversides, the park shows different sides of beauty in different seasons. covering Combing taking walking experiencing growing II II 语法填空语法填空In order to better develop and preserve the place, _ (limit)

17、 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 birds and fishes. With trees _(grow) in the shallows, the wetland is a land system for providing clean water and producing oxygen, which makes it “the green lungs of Hangzhou”. Notes: 1. destination 目的地，终点目的地，终点; 2. resident 居民居民 3. impact 影响影响, 碰撞碰撞, 冲击力冲击力; 4. shallow 浅的；肤浅的浅的；肤浅的; n. 地理地理 浅滩浅滩5. preserve 保存保存, 保护保护limiting growing