外研社高中英语必修六module4 SⅢ课件.ppt

Section Ⅳ　Grammar Writing;;语法专题突破;现在完成进行时 现在完成进行时，由“have/has＋been＋动词的ing形式”构成。它的用法归纳如下： 一、现在完成进行时的用法 1．现在完成进行时表示动作从过去的某一时刻开始一直延续到现在，动作是否延续下去视上下文而定。多使用延续性动词，如：live，learn，lie，sit，wait，study等，常和all this week，all the time，recently等时间状语连用。 For years，he has been demanding better jobs. 多年来，他一直在要求有更好的工作。;2．现在完成进行时还可用于以下情况：强调事件的持续性；叙述从过去某时到现在总在重复的动作；有感情色彩。 The telephone has been ringing for almost a minute. 电话铃响了差不多一分钟。 I have been knocking and I don’t think anybody’s in. 我一直在敲门，我想没人在里面。 Oh，you have come at last！I have been waiting for you for two long hours. 啊！你终于来了，我等了你足足两个小时。;二、现在完成进行时和现在完成时的区别 1．在不用时间状语的情况下，现在完成进行时表示动作仍在继续进行，而现在完成时则表示动作在过去已经结束。 We have been cleaning the classroom. 我们一直在打扫教室。(还未打扫完) We have cleaned the classroom. 我们把教室打扫过了。(已经打扫完);2．现在完成进行时往往表示动作在重复，现在完成时则常常不带重复性。 Have you been meeting her lately? 你最近跟她见面吗？(有“经常相会”之意) Have you met her lately? 你最近跟她见过面吗？(没有“经常相会”之意);3．表示暂时性的动作用完成进行时较好，表示长期的接近于状态的动作用完成时较好。 I have been waiting all the morning. 整个早晨我一直在等。(短暂性动作) I have lived here all my life. 我一辈子都住在这儿。 (长期的接近于状态的动作);4．有些表示状态、感情、感觉的动词，如：have，exist，like，hear，know，sound等，不能用于现在完成进行时，但可用于现在完成时。 John has loved Mary since ten years ago. 约翰自10年前就爱上了玛丽。 5．在否定句中一般用现在完成时而不用现在完成进行时。 I have not spoken English for two years. 我两年没说英语了。;;3．Hello，Mary.I __________________(look)for you all morning.Where have you been? 答案：have been looking 4．He ought to stop work；he has a headache because he __________________(read)all day long. 答案：has been reading 5．The CCTV __________________(broadcast)English programmes ever since 1977. 答案：has been broadcasting;6．—I’m really tired out. —So am I．We ________________(last)the discussion for nearly 2 hours. 答案：have been lasting 7．I __________________(look) for the book all the day. 答案：have been looking 8．I first met John five years ago.He ________________(work) at a book store since then. 答案：has been working;9．Don’t disturb me.I __________________(write)letters all morning and have written ten so far. 答案：have been writing 10．We ____________