Unit 4 Adversity and courage【重点语法】-2021-2022学年高二英语下册链接教材精准变式练（人教版2019选择性必修第三册）

重点语法 Unit4 （解析版） 2021-2022学年高二英语下册链接教材精准变式练（人教版2019） ( 教材 重点语法 知识链接 及典例解读 ) 现在完成进行时 阅读下面教材中的句子并体会现在完成进行时的语法特征 1.An expedition to the South Pole with the great Sir Ermest Shackleton — this is the adventure that I have been dreaming of. 2.We are now camped on the ice and we have been managing to survive, but spring is coming, and the ice will son begin to melt. 3.We have been struggling for days, but things on Elephant Island are going from bad to worse. 知识点1：现在完成进行时的构成和用法 1. 构成∶have/has+been+v-ing 2. 用法 现在完成进行时的用法 例句 表示动作从过去某时开始，一直延续到现在，将来还可能延续下去，强调动作的延续性。 I have been waiting for an hour, but she hasn't come yet. 我都等了一个小时了，但是她还没来。 表示从过去某时开始到现在这一段时间内动作一再发生。 She has been phoning Jim every night for the past two weeks.两个星期以来，她每天晚上都给吉姆打电话。 表示动作刚刚结束，该动作一般不再继续，有时会指出结果。 I have been playing ping-pong all morning, so I'm sweating buckets.整个上午我一直在打乒乓球，所以我大汗淋漓。 表示某种感情色彩。 You have been daydreaming but never make an effort.你一直在做白日梦，但从不努力。（指责） You have been lying to me. 你一直在对我说谎。（气愤） 1. （北京高考）-Excuse me，which movie are you waiting for? —The new Star Wars. We_______ here for more than two hours. A. waited B.wait C. would be waiting D. have been waiting 2.（天津高考）—You are a great swimmer. —Thanks. It's because I _________a lot these days. A. have been practising B. was practising C. would practise D. had practised 3.语法填空 ①（福建高考单项填空改编）—Where is Peter? I can't find him anywhere. —He went to the library after breakfast and___________ (write)his essay there ever since. ②（江西高考单项填空改编）—Tony，why are your eyes red?—I___________(cut)up peppers for the last five minutes. 【答案解析】1.D。句意∶——打扰一下，你们在等着看哪一部电影?——新上映的《星球大战》。我们已经在这里等了两个多小时。根据时间状语及语境可知，此处表示动作从过去开始，一直持续到现在，并且有可能继续下去，故用现在完成进行时。 2.A。根据 You are a great swimmer 及空后的时间状语"these days"可知，此处需要用现在完成进行时，表示动作一再发生，即正因为"这些天来经常练习游泳，所以才游得这么好"。 3.①has been writing。根据句中的时间状语ever since和间句的时态可知，write这一动作从过去某一时刻开始一直持憧到现在，并且有可能继续下去，所以用现在完成进行时。②have been cutting。句意∶——托尼，你的眼睛为什么红了?——在过去的5分钟里，我一直都在切辣椒。根据句膏可知，此处表示在过去的一段时间里一直都在做某事，这件事情刚刚做