1、选择性必修一 Unit 6 Using language高二年级 英语Step 1:Analysis of the materialWhat:语法部分的主要内容为现在完成进行时的概念及用法。小语段讲述了作者戴上虚拟现实头盔装置探索亚马逊雨林的经历。接下来通过对比二十年前和现在的环境状况，使同学们进一步熟悉现在完成进行时的用法。Why:帮助同学们在真实语境中掌握现在完成进行时的用法。How:引导同学们通过观察、总结掌握现在完成进行时与现在完成时的异同，学会在写作中正确应用现在完成进行时。Step 2:Leading-inPlease answer the following questions.
2、Question 1:When did you begin to learn English?Possible answer:I began to learn English from Grade 3 in primary school.Question 2:How long have you been learning English?Possible answer:I have been learning English for 7 years.Question 3:Are you still learning English now?Possible answer:Yes,I am st
3、ill learning English now.Step 3:Knowledge learningActivity 1:Look at the sentences from the reading passage and answer the questions.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 only once.(3)Wild an
4、imals still use these passages now.2.What is the difference between the expressions in bold in sentences(a)and(b)?They are different in form and meaning.For sentence(a)the form is“have been doing”,while for(b)is“have done”.In meaning,the bold part in sentence(a)means the action is continuous from th
5、e past;while the bold part in sentence(b)means the action happened once in the past.structure:have/has been doingpresent perfect continuous（现在完成进行时）Look for more sentences with the present perfect continuous tense in the reading passage,and summarize its use in your own words.1.The train has been ra
6、cing along 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,and before I knew it,we have reached Tanggula Station.4.The Qinghai-Tibet Plateau has been attracting peoples admiration for centuries.5.Now,thanks to our ef
7、forts,passengers from all over the country have been enjoying these magical landscapes.Summary:Present perfect continuous:（现在完成进行时）Structure:have/has been doing概念：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。pastpresenthave/has been doingWhat is the difference between present perfect continuous and presen
8、t perfect?e.g.They have been widening the road.他们在加宽马路。（但尚未完工）They have widened the road.他们加宽了马路。（已完工）总结：现在完成进行时往往强调动作的延续，而现在完成时强调动作的结果。What is the difference between present perfect continuous and present perfect?e.g.Ive been taking part in races for four years.我这四年一直在参加比赛。How many races have you t
9、aken part in?你参加多少场比赛了？总结：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。What is the difference between present perfect continuous and present perfect?e.g.What have you been doing?You look fed up.你一直在干什么呀？你看上去很不高兴。I have finished my homework.我已经完成了作业。总结：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
10、情色彩。常与现在完成进行时连用的时间状语：all the time,this week,all night,these few days,for.,since.等e.g.A private detective has been tailing him for several weeks.一位私人侦探几个星期以来一直在跟踪他。Tom loves outdoor activities he skis in winter and has been fishing and hunting since he was a child.汤姆热爱户外活动，冬天他去滑雪，他从小就开始钓鱼和打猎。Step 4:L
11、anguage practiceActivity 1:Rewrite the sentences with the present perfect continuous tense using the expressions in brackets.1.The Earth is getting warmer.(since the end of the 19th century)_2.Europeans grow tomatoes.(since the 16th century)_3.We are riding on this train across Canada.(for ten hours
12、)_The Earth has been getting warmer since the end of the 19th century.Europeans have been growing tomatoes since the 16th century.Weve been riding on this train across Canada for ten hours.Activity 2:Look at the charts and make sentences using the present perfect continuous tense.1.The number of tre
13、es 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 become larger and larger in the last 20 years.Step 5:Practical applicationActivity 1:Complete the passage with the correct form of the verbs in brackets.1
14、.have been hearing2.has been making3.is moving4.have been flying5.have been given6.have been using击打虚拟现实视图器 Activity 2:Work in pairs.uTalk about how the environment where you live has changed.uUse the present perfect continuous tense where appropriate.Air pollution and water pollution have always be
15、en existing in our city.However,we have been making great efforts to change the serious environment situation for recent 20 years.At the same time,peoples awareness of protecting environment has been improving.As a result,the environment of my city has changed a lot.Step 6:Homework1.Write a passage to introduce how the environment where you live has changed.Use the present perfect continuous tense in your passage.2.Preview the passage in the Developing ideas section.Thank you!
