Unit 6 Nurturing nature Using language--ppt课件-(2022）新外研版高中《英语》选择性必修第一册.pptx

1、Present perfect continuousUsing language1 1 现在完成进行时的概念现在完成进行时的概念 现在完成进行时表示动作从过去某一时间开始一直持续到现现在完成进行时表示动作从过去某一时间开始一直持续到现在，这个动作可能刚终止，也可能还在进行。在，这个动作可能刚终止，也可能还在进行。2 2 现在完成时和现在完成进行时的区别现在完成时和现在完成进行时的区别1 1）在不用时间状语的情况下，现在完成进行时的动作不一定已经完）在不用时间状语的情况下，现在完成进行时的动作不一定已经完成，成，很可能持续下去，很可能持续下去，而现在完成时一般表示动作已经完成。而现在完成时一般表

2、示动作已经完成。即即现在完成时行时强调动作的延续性，现在完成时行时强调动作的延续性，而现在完成时强调动作的结果。而现在完成时强调动作的结果。b I ve been designing solar racing cars.a Ive designed five or six different cars.2)2)现在完成进行时往往表示动作在重复，而现在完成时一般不表示现在完成进行时往往表示动作在重复，而现在完成时一般不表示动作的重复。动作的重复。a Ive been taking part in races for four years.b How many races have you tak

3、en part in?3)3)现在完成进行时与所有进行时态一样带有感情色彩，现在完成进行时与所有进行时态一样带有感情色彩，可使表达显得可使表达显得生动，而现在完成时往往只表明一个事实，一种影响或结果，不带感情生动，而现在完成时往往只表明一个事实，一种影响或结果，不带感情色彩。色彩。What have you been doing?You look fed up.3 3 常与现在完成进行时连用的时间状语常与现在完成进行时连用的时间状语,现在完成进行时常与表示一段现在完成进行时常与表示一段时间的状语连用时间的状语连用，如如:all the time,this week,all night,thes

4、e few days,for,since a A private detective has been tailing him for several weeks.b Craig loves outdoor activities-he skis in winter and has been fishing and hunting since he was a child.1 A retired engineer,76-year-old Wilson has been _(offer)free rides to college students for the past eight years.

5、2 For the past two years,Gordons students have been _(study)ways to kill bacteria in zero gravity,and they think theyre close to solution.3“People have been _(sit)there and standing there and taking pictures of each other,”Ro says.4 For the past 20 years,I _(live)by these words.5 Inventors have been

6、 _(try)to make flying cars since the 1930s,according to Robert Mann,an airline industry expert.直击高考直击高考 offering studying sitting have lived tryingLook at the sentences from the reading passage and answer the questions.They are different in form and meaning.For Sentence(a)the form is“have been doing

7、”,while for(b)is“have done”.In meaning,the bold part Sentence(a)means the action is continuous from the past;while the action happened once in the past.1.Which of these statements is true about sentence(a)?(1)Wild animals started using these passages in the past.(2)Wild animals used these passages o

8、nly once.(3)Wild animals still use these passages now.2.What is the difference between the expressions in bold in sentences(a)and(b)?Now look for more sentences with the present perfect continuous tense in the reading passage,and summarise its use in your own words.1.The train has been racing along

9、steadily since it left Xining.2.All this time,the song“Sky Railway”has been playing inside my head.3.The journey has been flying by,.4.The Qinghai-Tibet Plateau has been attracting peoples admiration for centuries.5.passengers from all over the country have been enjoying these magical landscapes.Com

10、plete the passage with the correct form of the verbs in brackets.I 1 _(hear)a strange sound for a while.Its a deep,loud roar,like a lions.But there arent any lions here Or are there?Soon I see what 2_(make)the noise:a howler monkey.Now I feel less worried.Realising that something 3_(move)on my shoul

11、der,I turn my head to look at it.Oh no!Its a giant spider!I brush it off and it runs under some leaves.I try to bat away the huge insects,which 4_(fly)around my head in a black cloud for quite a while.I pull off the headset and Im back in my living room.Thank goodness!I5_(give)the latest virtual rea

12、lity headset and,for the last twenty minutes,I 6_(use)it to explore the Amazon.This is an amazing experience and a reminder to how many species there are in the rain forest.We must do all we can to protect it.have been hearing has been making is movinghave been flyinghave been givenhave been using L

13、ook at the charts and make sentences using the present perfect continuous tense.1.The number of trees has been increasing in the last 20 years.2.Desert areas have been reducing in the last 20 years.3.Butterfly population has been increasing/has becoming larger and larger in the last 20 years.Tourism

14、 and the environmentDid you know?Ecotourism is a type of tourism that conserves the environment.It encourages people to be responsible travellers and involves educating them about the natural world.For countries such as Costa Rica,Kenya and Nepal,ecotourism is an important part of the economy.Some e

15、cotourism holidays involve voluntary work,such as planting trees or counting endangered animals.Costa RicaKenyaNepal Listen and Listen to the conversation and choose the places mentioned.Nepal and Thailand are mentioned.AustraliaSouth AfricaThailandNepalListen again and complete the notes.hard worke

16、lephantshike in the mountainscountlie on the beacha nice hotela one-day bike tourThe first optionRachel wants to 1_and plant trees.also 2_rhinos,which will help protect them.eat local food.Rachels dad thinks he can eat that kind of food at home.the activities sound like 3_.The second optionRachel wa

17、nts to look after 4_.sleep in a treehouse.Rachels dad wants to 5_ and read a book.CompromiseThey will stay in 6_.Rachel can do ecotourism activities while her dad does what he likes,They will go on 7_ of the jungle.The fact is that Wouldnt you agree that?I agree,but As a compromise,Lets find a compr

18、omise.Lets meet in the middle.Complete the boxes with the expressions from the conversation.Complete the passage with the expressions in the box.not eco-friendly create opportunities for new businesses disturb the wildlife help the local economy higher carbon emissions provide more jobs use up natur

19、al resources As tourism develops,people are becoming increasingly concerned about the environment.Here in our city,there is a heated discussion about whether a hotel should be built at White Beach.The owner of the company thinks the hotel would attract more tourists,which will 1_ and 2_.However,the

20、local people worry that building the hotel is 3_ and will 4_,in particular the turtles which lay their eggs on White Beach.But they also admit that building the hotel will 5_ for people living in the area.Even though the owner of the company guarantees that the design will be in harmony with its bea

21、utiful surroundings,the local people are still concerned that the hotel may 6_.Increased tourist numbers will also mean more cars and aeroplanes,which in turn means 7_.create opportunities for new businesseshigher carbon emissionsuse up natural resourcesprovide more jobsdisturb the wildlifenot eco-f

22、riendlyhelp the local economy1.attract more tourists2.create opportunities for new businesses3.help the local economy4.provide more jobs forpeople living in the area补补充充：5.raise awareness of local wildlife6.provide locals with a chance to experience other cultureshy1.not eco-friendly2.disturb the wildlife3.use up natural resources4.higher carbon emissions补充补充：5.pollute inshore seawater6.destroy local ecologicalenvironment.Complete the boxes with the expressions.Lets go on an ecotourism trip right now!