高中英語 選必B1U5-第3課時-Using language 課件

1、2021年春季深圳市線上課程高二英語深圳市教育科學(xué)研究院教學(xué)材料：外研版高中英語新教材選修第一冊教學(xué)內(nèi)容：Unit 5 Revealing Nature第三課時：Using Language執(zhí)教人： 劉聰/深圳市羅湖區(qū)翠園中學(xué) July. 30, 2021In sentence (a), “evolved from a common ancestor” happened first. It indicates the action happened before a certain past action.Observe and saya Darwin suspected that the f

2、inches had evolved from a common ancestor, . b Many people refused to believe that living things, including humans, had evolved from lower forms of life.Look at the sentences from the reading passage and answer the questions. 1 In sentence (a), which action happened first, “suspected” or “evolved fr

3、om a common ancestor”? Darwin suspected the finches evolved from a common ancestor Past perfect: had done2 In sentence (b), which action happened first, “refused to believe” or “ evolved from lower forms of life”? 3 What does the structure had done indicate?people refused to believeliving things evo

4、lved from lower forms of lifeIn sentence (b), “evolved from lower forms of life” happened first. Now look for more sentences with the past perfect tense in the reading passage, and summarise its use in your own words.1. It was a young man who had left medical school without completing his degree. 2.

5、 Whats more, he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”. 3. After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected.Have A L k4. At that

6、 time, people believed that all species had appeared on Earth at the same time, and had not changed since.5. It seemed their beaks had evolved according to what food was available on that particular island.6. Over time, it had slowly evolved into many new species.1. It was a young man who _medical s

7、chool without completing his degree. 2. Whats more, he _ recently _ a letter from his father predicting that he would be “a disgrace to yourself and all your family”. 3. After Darwin _ some time in South America, his room on the ship was crowded with samples of the plants and animals he _.Have A L k

8、had left hadreceivedhad spenthad collectedgo Ready?4. At that time, people believed that all species _ on Earth at the same time, and _since.5. It seemed their beaks _ according to what food was available on that particular island.6. Over time, it _slowly _ into many new species.had appearedhad not

9、changedhadevolvedhad evolvedFocus on 基本用法Past perfect 過去完成時 基本結(jié)構(gòu) 基本用法 常用固定句型1. 過去完成時的構(gòu)成為： 肯定式為_； 否定式為_； 被動式為_。 ShesaidshehadneverbeentoParis.她說她從未去過巴黎。 I didnt know the way to Johns house because I hadnt been there before.我不知道去約翰家的路，因為我之前沒去過。 The work had been finished by us last Friday.我們在上星期五完成了這項

10、工作。had donehad not donehad been done過去完成時的基本用法1. 表示在過去的某一時間或某一動作之前完成的動作或存在的狀態(tài)。 Before we got to the train station, the train had already left. 我們到達(dá)火車站之前，火車就已經(jīng)離開了。 Before I could say “thank you”, he had run away. 我還沒來得及說謝謝，他就跑開了。2. 表示從過去某一時間開始，一直延續(xù)到過去的另一個時間的動作，常用的時間狀語有by then, by the end of, by the t

11、ime。 By the end of last term, we had learnt 2,000 English words. 到上學(xué)期期末為止，我們已經(jīng)學(xué)習(xí)了2,000個 英語單詞了。They had lived there for ten years by then. 到那時為止，他們已經(jīng)在那住了10年了。3. 表示愿望、打算等的動詞，如hope, want, expect, think, mean, suppose, intend, plan等后接從句時，一般用過去完成時表示本打算實現(xiàn)而未實現(xiàn)的愿望和計劃。 I had intended to meet him at the airpo

12、rt, but I had an important meeting to attend. 我本打算去機場接他，但是我有個重要的會 議要參加。 I had hoped to take a holiday this year but I was not able to get away. 我原打算今年去度假，可是我離不開。1) It/That was+ the first/ second+ time+ that從句，從句謂語常用過去完成時。It was the first time that I had visited the Great Wall.這是我第一次參觀長城。2) It was+一段

13、時間+since從句，從句謂語用過去完成時。It was three years since he had joined the army.他參軍三年了。過去完成時用于一些固定句型：3) 在句型Hardly/Scarcelywhen和 No soonerthan中，主句常用過去完成時,從句用一般過去時，表示“一就”。 Hardly had he got into his big office when the telephone rang.他剛進(jìn)入他的大辦公室,電話鈴響了。 No sooner had he arrived than he was asked to leave again.他剛

14、到就被要求離開。Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. They can help you to decide the use of tenses.P53 2beganhad led todevelopedchose tohad madeComplete the online encyclopaedia entry with the correct form of the words

15、in the box.P53 3had introducedcompetedarrivedhad livedeatendeclinedWork in pairs. Act out a role-play using the information in Activity 3. One of you will play the keeper of Lonesome George, and the other will play the reporter asking about George. Use the past perfect tense where appropriate.P53 41

16、. I _ to send Peter a gift to congratulate him on his marriage, but I couldnt manage it . (2019天津卷)A. had hoped B. am hopingC. have hopedD. would hope2. A rescue worker risked his life saving two tourists who _(trap) in the mountains for two days. (2018北京)3. I was sent to the village last month to see how the development plan _ (carry out) in the past two years. (2018江蘇)直擊高考had been trappedhad been carried outSummary過去完成時主要用來表示在過去之前發(fā)生的事或做的動作，即過去的過去，通常與