1、a.Wild animals such as these Tibetan antelopes have now been using these passages for years.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 animals still use these passages now.a.Wild
2、 animals such as these Tibetan antelopes have now been using these passages for years.b.before I know it,we have reached Tanggula Station.1.What is the difference between the expressions in bold in sentences(a)and(b)?have/has been doinghave/has done 现在完成进行时现在完成进行时现在完成时现在完成时动作从过去开始正在进行动作从过去开始正在进行动作发生
3、在过去动作发生在过去观察归纳1.The train has been racing 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,.4.The Qinghai-Tibet Plateau has been attracting peoples admiration for centuries.5.passengers from all over the country
4、 have been enjoying these magical landscapes.more sentences with the present perfect continuous tense in the text现在完成进行时现在完成进行时含义：含义：现在完成进行时表示动作从现在完成进行时表示动作从_(_(过去过去/现在现在)一直一直持续到持续到_(_(过去过去/现在现在)形式：形式：_连用连用的时间状语：的时间状语：all the time,this week,all night,these few days,for.,since.过去过去现在现在have/has been d
5、oinga.I have been designing solar racing cars.我一直在设计太阳能赛车。b.I have designed five or six different cars.我已经设计五六辆小汽车了。现在完成进行时和现在完成时的区别现在完成进行时和现在完成时的区别含义：含义：现在完成进行时强调动作的现在完成进行时强调动作的_(_(延续性延续性/结果结果)，现在完成时强调动作的现在完成时强调动作的_(_(延续性延续性/结果结果)形式：形式：现在完成进行时现在完成进行时 _现在完成时现在完成时 _延续性延续性结果结果have/has been doinghave/h
6、as done2）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。例如：a.I have been taking part in races for four years.我这四年一直在参加比赛。b.How many races have you taken part in?你参加多少场比赛了？现在完成进行时和现在完成时的区别现在完成进行时和现在完成时的区别3）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，不带感情色彩。例如：What have you been doing?You looked fed up
7、.你一直在干什么呀？你看上去很不高兴。现在完成进行时和现在完成时的区别现在完成进行时和现在完成时的区别Pay attention to the expression in red and underlined.1 The train has been racing along steadily since it left Xining.2 All this time the song“Sky Railway”has been playing inside my head.3 Wild animals such as these Tibetan antelopes have now been u
8、sing these passages for years.观察归纳4 The Qinghai-Tibet Plateau has been attracting peoples admiration for centuries.5 Now,thanks to our efforts,passengers from all over the country have been enjoying these magical landscapes.现在完成时常与all this time,now等时间状语以及由since或for引导的时间状语连用。总结总结例句例句常搭配常搭配的时间的时间状语状语
9、现在完成进行时常与表现在完成进行时常与表示一段时间的状语连用，示一段时间的状语连用，例如：例如：all the time,this week,all night,these few days以及由以及由since和和for引导的短语或从句引导的短语或从句My sisters been writing letters all night.He is ill.Hes been lying in bed for three weeks.Weve been living in this city since we got married.现在完成时的标志时间：already,yet,so far,ne
10、ver,ever,recently,up till now持续不断进行,in the past/last.years.总结总结例句例句构构成成have/has+been+动词动词-ing形式形式Tom has been watching TV programmes since seven oclock this evening.I have been working here for five years.总结总结例句例句用法用法 表示一个由过去某一时间表示一个由过去某一时间开始一直持续到现在的动开始一直持续到现在的动作作(可能刚结束，也可能可能刚结束，也可能还要进行下去还要进行下去)。Ive
11、 been doing my housework all morning and Ive just finished it.How long have you been wearing glasses?有时表示动作的重复。有时表示动作的重复。David has been coughing a lot lately.He ought to give up smoking.有时带有感情色彩。有时带有感情色彩。Too much has been happening today!1.The first use of atomic weapons(原子武器原子武器)was in 1945,and the
12、ir power _(increase)ever since.2.Years ago we didnt know this,but recent science _(show)that people who dont sleep well get ill easily.3.Look!Somebody _(clean)the sofa.Well,it wasnt me.I didnt do it.4.How long _ you _(work)in the factory?Since 1990.Lets practicehas been increasinghas shownhas cleane
13、dhave been working5In order to find the missing child,villagers _(do)all they can over the past five hours.6The manager _(tell)the workers how to improve the program since 9 am.7The two friends _(chat)on the Internet for three hours,and they will go on till next morning.Lets practicehave been doingh
14、as been tellinghave been chatting 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.Realizing that something 3_(move)on my shoulder,I turn my head to look at i
15、t.Oh no!Its a giant spider!I brush it off and it runs under some leaves.Complete the passage with the correct form of the verbs in brackets.have been hearing has been making is moving 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 hea
16、dset and Im back in my living room.Thank goodness!I5_(give)the latest virtual reality headset and,for the last twenty minutes,I 6_(use)it to explore the Amazon.Complete the passage with the correct form of the verbs in brackets.have been flyinghave been givenhave been usingThis is an amazing experie
17、nce and a reminder to how many species there are in the rain forest.We must do all we can to protect it.Complete the passage with the correct form of the verbs in brackets.Look at the charts and make sentences using the present perfect continuous tense.The number of trees has been increasing/rising
18、in the last 20 years.increase增加增加rise Look at the charts and make sentences using the present perfect continuous tense.Desert areas have been reducing/decreasing in the last 20 years.decrease减少减少reduce Look at the charts and make sentences using the present perfect continuous tense.Butterfly population has been increasing/has becoming larger and larger in the last 20 years.
