Unit 1 Relationships Lesson 1 Teachers 现在完成时&过去完成时课件-2024-2025学年高中英语北师大版（2019）选择性必修第一册

现在完成时&过去完成时 Present Perfect&Past Perfect Time：2024 现在完成时&过去完成时 Today Yesterday The day before yesterday B A C 现在完成时（Present Perfect） 表示过去发生的事情对现在产生的影响或结果。常用的状语有already，ever，just(刚刚)，yet等。 He has already turned off the light. 他已经关灯了。 (＝The light is off now.) 现在完成时（Present Perfect） 表示一个动作开始于过去，一直持续到现在。 常与之连用的时间状语有lately，recently，until now，up to now，so far，by now，ever since，since，in the last(past) few days/years，for+一段时间等。 In the past few years，great changes have taken place in my hometown. 在过去的几年里，我的家乡发生了巨大变化。 Exercise 1. I ________ (drive) for thirty years, and I’m not going to stop now. 【答案】have driven 【详解】句意：我已经开了30年车了，现在我不会停下来的。根据“for thirty year”可知，此处用现在完成时，故填have driven。 Exercise 2. It's reported that the temperature 　 　(climb) quickly since this morning. 【答案】has climbed 【详解】句意：据报道，从今天早上开始气温迅速上升。since自从...，要用于现在完成时have/has+过去分词，temperature要用has，故填has climbed。 Exercise 3. (2018新课标II卷) Since 2011, the country________(grow) more corn than rice. 【答案】has grown 【详解】考查时态。句意：自2011年以来，与水稻相比，该国种植了更多的玉米。句中since表示“自从”，是现在完成时的标志词，句子应用现在完成时，且主语the country是单数，谓语动词应用第三人称单数形式。故填has grown。 Exercise 4. （2022全国甲卷）In the last five years, Cao ________ (walk) through 34 countries in six continents. 【答案】has walked 【详解】考查动词时态。句意：在过去五年中，曹穿越了六大洲的34个国家。根据时间状语in the last five years可知，此处应用现在完成时，主语Cao为第三人称单数，助动词用has。故填has walked。 。 Before Mr Jenkins taught me, science had simply been a subject full of strange words to me. 过去 现在 过去的过去： 结构：（助动词）had + done（动词的过去分词） 过去完成时 动作在had been发生之后 动作在taught发生之前 before 引导的时间状语从句 用法1：强调过去某一动作发生在另一动作之前“过去的过去” 过去完成时（Past Perfect） Hong Kong _________(return) to China in 1997. returned Macao __________(return) to China in 1999. returned Hong Kong ____________(return) to China before Macao came back to China. had returned 过去完成时（Past Perfect） 用法2：表示一个动作或状态从过去某一时间之前已经开始，这一动作一直持续或将继续下去。 I ____________(learn) English for 10 years when I graduated. He ____________(stay) here for two days before he left. had learned had stayed by then 到那时为止 by that time 到那时候 时间标志词 before 在......之前 by the end of 到......末为止 until then 直到那时 by the time+一般过去时的从句 到......时候 过去分词： 规则变化 规则 动词 例子 直接+ed 一般动词 worked, helped 去e+ed 不发音e结尾 liked, lived 双写+ed 辅元辅，双写尾字母 planned, stopped 改y为i+ed 以辅音+y结尾 studied, cried 常见不规则动词过去时和过去分词： 动词原型 过去式 过去分词 be was, were been have had had do did done come came come go went gone take took taken make made made 常见不规则动词过去时和过去分词： 动词原型 过去式 过去分词 leave left left know knew known drink drank drunk eat ate eaten choose chose chosen break broke broken fly flew flown Exercise 1. It was the ninth time that the team________ (win) the championship. 【答案】had won 【详解】考查固定句型。 句意： 这是该队第九次赢得冠军。it is/was the+序数词+time+that+句子，表示“第几次做……”，主句用is，从句用现在完成时；主句用was，从句用过去完成时，所以此处应用过去完成时，在that从句中主语the team和动词win是主动关系，故填had Exercise 2. By the time I got to school, the first play ______ (be) on for nearly half an hour. 【答案】had been 【详解】考查时态。句意：我到学校时，第一场戏已经上演了将近半个小时。根据上文By the time I got to school可知为现在完成时，故填had been。 Exercise 3. When she realized that she had left her handbag in the taxi, the taxi _________ (disappear). 【答案】had disappeared 【详解】考查动词时态。句意：当她意识到她把手提包忘在出租车上时，出租车已经不见了。分析句子结构可知，主句缺少谓语动词，disappear发生在realized之前，表示“过去的过去”，需用过去完成时。故填had disappeared。 常使用完成时的句型1 It was/ had been+段时间+ since从句，从句用过去完成时； It is/ has been+一段时间+ since从句，从句用一般过去时。 ●It was ten years since we ________(have) such a wonderful time. 我们十年没这么高兴了。 ●It is three years since he ________(join) the army. 他参军已经三年了。 had had joined 模板来自于： 第一PPT https:/// 常使用完成时的句型2 It is the first/ second/time+that从句，从句用现在完成时； It was the first/ second/time+that从句，从句用过去完成时。 ●It is the first time that I __________(be) here. 这是我第一次到这里来。 ●It was the first time that he ____________(listen) so attentively. 这是他第一次那么认真地听讲。 have been had listened 模板来自于： 第一PPT https:/// 常使用完成时的句型3 That/This/It is/was+the+最高级+名词+定语从句，从句常用完成时。 ●This is the best film that I have ever seen. 这是我看过的最好的一部电影。 ●That dinner was the most expensive meal we had ever had. 那顿饭是我们吃过的最贵的一顿饭。 模板来自于： 第一PPT https:/// Put the verbs in brackets using the simple past or past perfect form. 1. I washed my hands after I ___________ (clean) the dishes. 2. By now, the bird _________(make) many swan friends there, and it is living a happy life. It’s really a happy ending. 3. My life ________(be)very miserable since she died. 4. John _________ (be) an artist before he _________ (become) a musician. had cleaned has made has been had been became Exercise Teachers can choose to do speaking or writing for this activity. 22 Put the verbs in brackets using the simple past or past perfect form. Exercise 5. Where _________ (you/be) after I _________ (see) you at the park? 6. My grandparents __________ (know) each other for a year before they _________ (get) married. 7. My sister _________ (play) a lot after she ___________ (finish) the midterm exam. 8. How many coffees _____________ (she/drink) before the interview? had known got were you had seen played had finished had she drunk Teachers can choose to do speaking or writing for this activity. 23 Put the verbs in brackets using the simple past or past perfect form. Exercise 9. It has been three years since he ________(leave) Beijing. 10. It was just a week since I ____________(arrive) here. 11. This is the first time that I ____________(hear) him sing. 12. I was lucky because that was the first time that I ____________ (not work) on a Saturday. 13. This is the most unforgettable person I _________(have) in all these years. had arrived left have heard had not worked have had Teachers can choose to do speaking or writing for this activity. 24 Thanks! $$