Unit 3 Discover useful structures（24张PPT）-教案课件-高中英语选择性必修一

Unit 3 Unit 3 FASCINATING PARKSFASCINATING PARKSTo learn and practise the-ing form used as subject.Have you ever seen these signs?the ing formIdentify the function of the-ing form in the sentence below.Getting here is quite difficult.Being in such a beautiful and wild place makes me feel blesses to be alive.作主语作主语作主语作主语Find more sentences with the ing form as the subject from the reading passage.For hundreds of years,looking after reindeer was a way of life for the Sami.1.(读书读书)is her hobby.Reading 2.is a waste of time.(玩电脑游戏玩电脑游戏)Playing computer games3.is dangerous.(开车开得太快开车开得太快)Driving too fast 4.makes me happy.(打篮球打篮球)Playing basketball5.is a good way to relax.(旅游旅游)Travelling6.can bring you into different world.(参观主题公园参观主题公园)Visiting theme parks 动词动词-ing形式作主语形式作主语1.动词动词-ing形式作主语，表示一般或抽象的形式作主语，表示一般或抽象的习惯性行为，习惯性行为，谓语动词用单数谓语动词用单数。如：。如：Reading aloud 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.在一些句子中，常用在一些句子中，常用it作形式主语放在作形式主语放在句首，而把真正的主语放到句末。句首，而把真正的主语放到句末。如：如：It is no use crying over spilt milk.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 做做是没益是没益/用处的用处的It is/was hardly/scarcely worth doing 做做不值得不值得It is/was worth/worthwhile doing 做做是值得的是值得的There is no sense in doing 做做没有道理没有道理常用常用-ing形式作主语的句型有：形式作主语的句型有：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 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 winter would hardly be possible due to the extreme cold.3 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.Honestly,exploring a vast unknown land can be both exciting and terrifying.Adopting a positive attitude is good,even when things 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.Discuss:How does the sentence focus change.Fill in the blanks using the-ing form of a verb from the box and state its function.One word will be used twice.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,coveringCombiningcombine cover grow take limit walk experience taking 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 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 experiencinggrowinglimitingcombine cover grow take limit walk experiencewalkingpark 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”.growingcombine cover grow take limit walk experienceChoose a place in your city or town as a destination for a school trip.Use the passage above as an example and write about your choice.