【課件】Unit 3 Discovering useful structures（課件）-（人教版選擇性必修第二冊）

1、Period 3 Discovering useful structuresUnit 3 Food and CultureThe past perfect tense and its passive voice1. Enable the Ss to master the usage of past perfect tense and its passive voice in this unit.2. Enable the Ss to use the relevant grammar flexibly.The Past Perfect Passive By the time the tornad

2、o ended, more than 700 people had been killed.到龍卷風(fēng)結(jié)束時，已有700多人喪生。Q: Which event happened first?a.the tornado ending b.700 people dying past had been killedA past event before another past event/a past time when/before/after/bynowactivepassiveThe room looked nice. Somebody had cleaned it.The room look

3、ed nice. It had been cleaned.had donehad been done2.過去完成被動時基本用法 表示過去某一時間或某一事件前已發(fā)生且已被完成的動作或狀態(tài)。如： The work had been finished by us by nine o clock yesterday. 昨晚九點(diǎn)前我們已完成了工作。 Grace realized a mistake had been made by her. 格瑞絲意識到她犯了個錯誤。 The project had been completed by the end of 1999. 到1999年底他們已完成了那個項(xiàng)目

4、。1. After being discovered by Dutch explorers in 1606，the eastern half of Australia _(claim) by the British in 1770.2. His sister left home in 1998，and _ ever since. 3. She _ (return) home and _ (find) all her furniture _(ruin) by the flood.4.This Monday morning I was informed I _ as one of three ex

5、change students from our college.foundhad been ruinedreturnedhad not been heard ofhas been claimedhad been chosen5.Arthur was surprised when he _ (arrive) home because the tornado _ (take) the feathers off his chickens.6.We _ (leave) the house when the thunderstorm _ (finish).7. He _ (try) to drive

6、back to his home before the flood _ (pass) through the village.arrivedhad takenlefthad finishedhad triedpassed 1)用于用于wish后的賓語從句中，表示對過去未做成的事情的某種感后的賓語從句中，表示對過去未做成的事情的某種感嘆或愿望。如：嘆或愿望。如：I wish I had been there at that time.那時候我要在那兒就好了。（事實(shí)上我不在那兒。）那時候我要在那兒就好了。（事實(shí)上我不在那兒。）I wish I had told him about it.我要是告訴

7、他那事就好了。（事實(shí)上我沒告訴他。）我要是告訴他那事就好了。（事實(shí)上我沒告訴他。）2)用于對過去事實(shí)進(jìn)行虛擬的條件句中。如：用于對過去事實(shí)進(jìn)行虛擬的條件句中。如：If I had hurried, I wouldnt have missed the train.如果我快點(diǎn)的話，我就不會誤了火車。如果我快點(diǎn)的話，我就不會誤了火車。If you had been at the party, you would have met him. 如果你去了晚會，你就會見到他的如果你去了晚會，你就會見到他的。 3)過去完成時常用在引述動詞一般過去時后的間接引語中過去完成時常用在引述動詞一般過去時后的間接引語

8、中。They said that they had planted the trees on the hillside.他們他們說他們把樹種在山坡上了。說他們把樹種在山坡上了。Jack told me he had read the book before.杰克告訴我他以前讀過那本書。杰克告訴我他以前讀過那本書。Julie said she had gone to see him the day before.朱莉說她前一天已經(jīng)去看過他朱莉說她前一天已經(jīng)去看過他。 4) think，want，hope，plan，intend，mean和和suppose等詞的過等詞的過去完成時可以用來表示本來要

9、做而沒做或無法做的事，或沒有實(shí)去完成時可以用來表示本來要做而沒做或無法做的事，或沒有實(shí)現(xiàn)的希望或意圖現(xiàn)的希望或意圖。Eve had hoped to see more of China.伊芙曾希望在中國多觀光一番。伊芙曾希望在中國多觀光一番。I had intended to be there on time.我本打算準(zhǔn)時去的。我本打算準(zhǔn)時去的。Greta had meant to see her off at the airport.格瑞塔本打算是要去機(jī)場送她的。格瑞塔本打算是要去機(jī)場送她的。 practice I _ the operation to be painful, but I d

10、idnt feel a thing.2.I _to go on a trip, but I was busy.3. I _to see you , but I had to look after my baby.had expectedhad meant had intended 5)用在用在“ 主語主語+ had hardly/scarcely( no sooner) +過去過去分詞分詞+ when( than)從句從句句型中，句型中，從句用一般過去時從句用一般過去時。當(dāng)當(dāng)hardly scarcely, no sooner位于句首時，主句要倒裝位于句首時，主句要倒裝。I had no so

11、oner reached home than it began to rain. 我剛到家我剛到家就開始下雨了。就開始下雨了。Hardly had we left the house when it began to rain.我們剛我們剛離開家，天就開始下雨了。離開家，天就開始下雨了。(2)與與. by the end . by the time.等連用。等連用。By the end of that year, Henry had collected more than a thousand postcards.到到那年年底那年年底, Henry已經(jīng)收集了一千多張明信片已經(jīng)收集了一千多張明信

12、片。By the time they arrived, we had got everything ready.在他們到這之前，我們已經(jīng)準(zhǔn)各好一樹了在他們到這之前，我們已經(jīng)準(zhǔn)各好一樹了。 (3)用在用在“It was the +序數(shù)詞序數(shù)詞+ time ( that).”或者或者It was the +形容詞形容詞最高級最高級+名詞名詞+ (that).”句型句型中中(從句從句用過去完成時用過去完成時)。It was the first time ( that) I had been to Shanghai.那那是我是我第一第一次次去上海去上海。It was the most inspirin

13、g performance I had watched. 這是這是我看過的最激勵人心的我看過的最激勵人心的表演表演(4)用在用在It was+一段時間一段時間+ since從句從句句型中句型中(從句用從句用過去完過去完成時成時) 例句例句It was at least three months since I had left Beijing.我離開我離開北京至少有三個月了北京至少有三個月了。 句型轉(zhuǎn)換： A: The chef had set up a farm to table restaurant before his new cookbook workbook was publishe

14、d. B:A new farm to table restaurant _by the chef before his new cookbook was published. A:They had finished their dinner by the time Sam joined them. B:Their dinner _by the time Sam joined them. Find more sentences using the past perfect tense and the past perfect passive voice from this unit.had be

15、en set up had been finished Find more sentences using the past perfect tense and the past perfect passive voice from this unit. 1. Prior to coming to China, my only experience with Chinese cooking was in America, with Chinese food that had been changed to suit American tastes. 2. A Sichuan restauran

16、t had been recommended to us by a friend, and finally, we found it. Complete the two conversations with the correct forms of the words in the box using the past perfect tense or the past perfect passive voice. 1 Carol: _you ever _ any Scottish food before your trip to St Andrews last year? Paul: No,

17、 not really. But I _about haggis many times before we went there. Carol: Oh. Did you try it? Paul: Oh, yes! You know what? We_ late for supper that day, and so we just ate whatever was left in the university canteen. We _our meal before we learnt we_ just_， haggis! Carol: My goodness! Paul: Well, it was not bad. I have to say . 2 Caro: When I got to the tea house yesterday, I found nobody there. _it_? Paul: Oh, Im so my that forgot to tell