Unit 3 Fascinating Parks Discovering Useful Structures 课件-2024-2025学年高中英语人教版（2019）选择性必修第一册

e7d195523061f1c0600ade85ab8d19863d296bbd6d3c8047FB0A4867354E4F1E3A7DEAE3C4C4B5C9777EC9E9D7F78045DB0296A4194571101A21F67FC7D6C39966CE50B69116E2EE84E571E25F3C0CCEA35345819A6633E32DE97593E7E94D0ADEDF1E3A2AE0E87806401D3E212C15513DB0D9B18751B31414E5E7C1B04D3A579B500D82EB5F9274246BC4A1F271915D Unit3 Fascinating Parks Discover useful structures Lead-in Identify the function of the -ing form in the sentences below. Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek. (Para. 2) Being in such a beautiful and wild place makes me feel blessed to be alive. (Para. 4) 主语 主语 Lead-in Even though the sun is brightly shining, telling whether it is morning or night is impossible. (Para. 1) For hundreds of years, looking after reindeer was a way of life for the Sami. (Para. 3) 主语 主语 Find more sentences with the -ing form from the reading passage and state their functions. Observe & Discover 2. Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek. (Para. 2) 4. Being in such a beautiful and wild place makes me feel blessed to be alive. (Para. 4) 1. Even though the sun is brightly shining, telling whether it is morning or night is impossible. (Para. 1) 3. For hundreds of years, looking after reindeer was a way of life for the Sami. (Para. 3) 通常直接位于 句首， 1. 动词-ing形式作主语, 谓语动词用 单数形式 Compare & Discover Singing is my hobby, and to sing at my friend's wedding ceremony is my dream. 2. 动词-ing形式作主语时，多指经常性、 习惯性的动作； 不定式作主语时，表示具体的或一次性的动作。 Transform and Observe Hiking through the mountains in the pathless Sarek is great fun. It is great fun hiking through the mountains in the pathless Sarek . V.-ing 形式作主语 it 代替V.-ing 形式作形式主语 3.在一些句子结构中，为了平衡句子结构，会将作主语的V.-ing形式后移，用it来充当其 ,真正的主语是 。 形式主语 V.-ing Transform and Observe ⑴ It's worth making the effort. ⑵ It is pleasant working with you. ⑶ It's no use crying over split milk. ⑷ It was a waste of time reading that book. it作形式主语前置，真正的主语是动词 -ing形式。 但这种句子形式有一定的限制，作表语的只能是某些形容词或少数名词 形容词 名词 Transform and Observe It + be + a waste of time doing … It is/was no good/use/useless doing … It is/was worth/worthwhile doing … It’s (great) fun doing sth. 做……是浪费时间的 做……是没有用的 做……是值得的 常用动词-ing形式作主语的句型有: 做某事是有（极大）乐趣的 Practice 1. (talk) is easier than doing. 2. Learning new words (be) very important for me. 3.It is no use ______________(manage) to convince him now; he has already made up his mind. 4. It was a waste of time _________ (cry) about the lost opportunity. 5. It's fun________( play) with you, but I have to go now. 6. It’s worthwhile ___________(try) this new method. Talking crying playing trying managing is Observe and Analyze 1. Hiking through the wild landscape of Sarek National Park is a journey into the heart of untamed nature. 2. Witnessing the midnight sun and encountering reindeer herds are among the unfortettable experiences. Tip 1 单个V-ing 形式作主语，谓语动词用 ；意义不同的两个V-ing 形式并列作主语时，谓语动词用 。 单数 复数 1. Watching the light show in Liqiao park (be) exciting. 2.Taking photos and tasting delicious food (be) at the top of the list of my favorite activities. 3. Your coming late and making noise (disturb) everyone, most of them are annoyed. 4. Balancing work and personal life (be) a constant struggle for many. 5. Washing the dishes and doing the laundry (take) a lot of time. have disturbed is take Practice 1 is are Observe and Analyze having been done完成+被动 1.Having been made a national park results in a fact that all new development is banned within park boundaries. 2.Being looked after by the Sami keeps the reindeer under protection. 3.Having adopted some of the Sami’s habits doesn’t prove I am a Sami. being done被动 having done完成 Tip 2充当主语成分的v.-ing 形式根据句意及动作的状态，也有 和 的变化。 时态 语态 时态\语态 主动语态 被动语态 一般时 完成时 doing being done having done having been done Practice 2 1. ___________________ (inform) of the change in advance made it easier for us to adjust our plans. 2. __________________ (praise) by the teacher yesterday made him very happy. 3. _________________(receive) the letter already means we can start the project. 4.  ________________ (see) the movie before doesn't stop me from enjoying it again. 5. __________(have) the opportunity to travel abroad is a wonderful thing. Having been informed Being praised Having received Having seen Having 1. His being late again made his teacher very angry. 2. Mike’s returning to work is a great help to his family. Observe and Analyze Tip 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-ing (2) 名词所有格+动词-ing Fill in each blank using the v-ing form of a verb from the box and state its function. One word will be used twice. combine cover grow take limit walk experience Xixi 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 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 people's favourite activities. covering 定语：表主动 Combining 主语 taking walking experiencing 主语 主语 主语 Exercise With trees, bushes, and colourful flowers along the riversides, 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 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 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”. growing growing limiting 宾补：with复合结构 宾补：with复合结构 主语 Summary v-ing 作主语 动词+ing 相当于一个名词，多指概念性、抽象性的动作，经常性、习惯性的行为。 单个V-ing 形式作主语，谓语动词用单数；意义不同的两个V-ing 并列作主语时，谓语动词用复数。 基本形式 意义&用法 主谓一致 It 作形式主语 时态&语态 与不定式作主语的区别 Assignment Workbook P76 1.Complete the sentences with the –ing form of the verbs in the box. ( Activity 1) 2. Translate the Chinese in brackets into English to complete the passage. Use the -ing form where possible.( Activity 3) $$