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课件网) Unit 6 Nurturing nature Present perfect continuous To learn the use of present perfect continuous tense To use the present perfect continuous tense to talk about how the environment where you live has changed Look at the sentences from the reading passage and answer the questions. a Wild animals such as these Tibetan antelopes have now been using these passages tor years. b …before I know it, we have reached Tanggula Station. 观察归纳 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 animals such as these Tibetan antelopes have now been using these passages tor years. 2 What is the difference between the expressions in red in sentences (a) and (b) a Wild animals such as these Tibetan antelopes have now been using these passages tor years. b …before I know it, we have reached Tanggula Station. a: have been using b: have reached a: have been doing – present perfect continuous b: have done – present perfect 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 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 using these passages for years. 4 The Qinghai-Tibet Plateau has been attracting people’s admiration for centuries. 5 Now, thanks to our efforts, passengers from all over the country have been enjoying these magical landscapes. 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 using these passages for years. 观察归纳 4 The Qinghai-Tibet Plateau has been attracting people’s 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。 现在完成进行时 总结 例句 构成 have / has + been + 动词-ing形式 Tom has been watching TV programmes since seven o'clock this evening. I have been working here for five years. 总结 例句 用法 表示一个由过去某一时间开始一直持续到现在的动作(可能刚结束，也可能还要进行下去)。 I've been doing my housework all morning and I've just finished it. How long have you been wearing glasses 有时表示动作的重复。 David has been coughing a lot lately. He ought to give up smoking. 有时带有感彩。 Too much has been happening today! 总结 例句 常搭配的时间状语 all this time, this week, this month, all night, all the morning, recently等状语以及由since和for引导的短语或从句 My sister’s been writing letters all night. He is ill. He ... ...
