(
课件网) Unit 4 Adversity and Courage Learning About Language Teaching Objectives: 1. Master the basic structure of the Present Perfect Continuous Tense. 2. Figure out the difference between Present Perfect Tense and Present Perfect Continuous Tense. Key and difficult points: Key point：Master the basic structure and the significance of Present Perfect Continuous Tense. Difficult point：How to distinguish the Present Perfect Tense and Present Perfect Continuous Tense. Part 1 Build up your vocabulary Find the suitable adjectives from the previous text to complete the sentences. The first letter of each word has been given. ecent osy ad-tempered iserable itter enuine Choose the appropriate word to complete each sentence. 1 The fire alarm caused a panic/worry in the theatre and the crowd fled in all directions. 2 Although my grandpa is retired, he is very enthusiastic/concerned about volunteer work. 3 The officer was assigned/employed to conduct a thorough investigation into the incident. 4 The sun was sinking/falling behind the mountains when we reached the top. 5 It took him a lot of vigour/energy to move all the items of furniture inside the house. Complete the passage with the correct forms of the words in the box. resolved was turned down, aboard cupboard assigned crew aboard assign crew cupboard set off sink turn ... down voyage voyage sank abandon set off Part 2 The present perfect continuous tense Have done Doing Doing Have done 现在完成进行时表示过去发生的动作或状况一直持续到现在，这个动作可能仍在继续进行或刚刚结束。现在完成进行时由“have/has + been + 现在分词”构成。 Past Present Future have/has + been + v-ing 肯定句：主语 + have/has + been + 现在分词... 否定句：主语 + have/has + not + been + 现在分词... 疑问句：Have/Has + 主语 + been + 现在分词... 疑问代词/ 疑问副词 + have/has +（主语 +）been + 现在分词... have/has been + 动词的现在分词 表示动作从过去某时开始一直到说话时还在进行或可能还要继续下去。 They have been building the bridge since last spring and it's not finished yet. 他们从去年春天就开始建这座桥，到现在还没完工。 last spring Now future building the bridge have/has been + 动词的现在分词 与现在完成进行时连用的时间状语: all day/month; this month/week /year; these days; recently/lately; in the past/last few+时间段; since+时间点; for+时间段, ever since等。 I have been cleaning the house all day. I'm exhausted but still not done yet. 我一整天都在打扫房子。我累坏了，但还没干完。 These days, they have been training hard for the upcoming sports meet. 这些天，他们一直在为即将到来的运动会刻苦训练。 Recently, I have been reading a series of classic novels. I'm really enjoying them. 最近，我一直在读一系列经典小说。我读得很开心。 have/has been + 动词的现在分词 表示不久前刚刚结束的动作。这种意义通常根据上下文来判断。 They have been painting the wall. Look, there's still some paint on the floor. 他们一直在刷墙。看，地板上还有一些油漆呢。 The students have been doing the experiment. They ar ... ...
