人教版八下-Unit 8 Have you read Treasure Island yet -Section A Grammar focus 4a—4c-ppt课件-(含教案+素材)-省级优课-(编号：00094).zip

内页篇 Lead-in 0 1 现在完成时的构成 The structure of the present perfect tense 0 2 现在完成时的基本句型 The basic sentence patterns of the present perfect tense 0 3 The usage of present perfect tense 0 4 现在完成时的时间状语 Adverbial clauses of the present perfect tense Contents 现在完成时的用法 内页篇 0 1 现在完成时的构成 The structure of the present perfect The structure of the present perfect tensetense Contents 内页篇 The structure of the present perfect tense 现在完成时是由“助动词助动词have/has+have/has+动词的动词的 过去分词过去分词”构成。其中，助动词要和主语的 人称、数保持一致。 havehave（hashas）+ +过去过去 分词分词 内页篇 动词的动词的过去分词过去分词的变化和的变化和过去式过去式的变化的变化 并不完全相同。今天我们主要针对并不完全相同。今天我们主要针对过去过去分词分词 与过去式相同的部分单词进行整理，把它们与过去式相同的部分单词进行整理，把它们 作一个大致的分类。作一个大致的分类。 ( (注：例子中单词的变化顺序为：动词原形注：例子中单词的变化顺序为：动词原形 动词的过去式动词的过去式 动词的过去分词动词的过去分词) ) The structure of the present perfect tense 内页篇 1 3 24 规则 变化 1 2 一般在动词词尾直接加ed。如： pick picked picked; wish wished wished; stay stayed stayed 以不发音的e结尾的动词后面加d。如： like liked liked; hope hoped hoped; phone phoned phoned 3 以“辅音字母 + y”结尾的动词，变y为i，再加-ed。如： study studied studied; hurry hurried hurried; reply replied replied 4 词尾只有一个辅音字母的重读闭音节动词，要双写辅 音字母，再加-ed。如： stop stopped stopped; clap clapped clapped The structure of the present perfect tense 内页篇 5 6 以不变应万变。如： let let let; put put put; read read read 若中间有双写e，则去掉一个e，单词末尾再加t。如： feel felt felt; keep kept kept; sleep slept slept 6 8 9 5 不规则 变化 7 7 结尾的字母d变t。如： lend lent lent; build built built; send sent sent The structure of the present perfect tense 8 9 变为以-ought或-aught结尾。如： buy bought bought; bring brought brought; catch caught caught; teach taught taught 结尾加t。如： burn burnt burnt; dream dreamt dreamt; mean meant meant 内页篇 Test 1 Write the forms of the past tense and past participle: cut _ _ sweep _ _ spend _ _ learn _ _ think _ _ cut cut swept swept spent spent learnt learnt thought thought The structure of the present perfect tense 内页篇 0 2 现在完成时的 基本句型 The basic sentence patterns of The basic sentence patterns of the present perfect tensethe present perfect tense Contents 内页篇 肯定式肯定式 主语+助动词助动词have/hashave/has+动词的过去分词“.” 否定式否定式 主语+助动词助动词have/has+nothave/has+not+动词的过去分词“.” 疑问式疑问式 助动词助动词have/hashave/has+主语+动词的过去分词“？” The basic sentence patterns 内页篇 A: Have you surfed the Internet (上网上网)? B: Yes, I have. I have surfed the Internet. No, I havent. I havent surfed the Internet. The basic sentence patterns 内页篇 The basic sentence patterns Transform the sentence patterns 1) We have visited the museum. (改为一般疑问句改为一般疑问句) 2)They have seen the film. (改为否定句改为否定句) 3)Jenny has finished her homework. (改为一般疑问句并做否定回答改为一般疑问句并做否定回答) Have you visited the museum? They havent seen the film. Has Jenny finished her homework? No,she hasnt. 内页篇 Test 2 The basic sentence patterns give your mother a call have lunch A: Have you ? B: Yes, I have. / No, I havent. 内页篇 0 3 现在完成时的用法 The The usages usages of of the present the present perfect perfect tensetense Contents 内页篇 past now Yesterday , we cleaned the classroom. Now , the classroom is clean because we have cleaned it. 用法用法1 表示过去发生的动作表示过去发生的动作对对现在产生的现在产生的结果或影响结果或影响 The usages of the present perfect tense 内页篇 Test 3 Fill in the blanks with the correct pattern： 1. I saw this film last week. Now, I know this film because I_. 2. I did my homework yesterday. Now, I can give it to the teacher because I_ have seen it have done it. The usages of the present perfect tense 内页篇 now past I began to teach English at this school five years ago. I have taught English at this school for five years. 用法用法2 2： 表示过去发生的动作一直表示过去发生的动作一直延续延续到现在且有到现在且有 可能继续下去的动作或状态。可能继续下去的动作或状态。 The usages of the present perfect tense 内页篇 Test 3 Fill in the blanks with the correct pattern： 1. I am a doctor. I began to work when I was 22. Now , I am 26. I _ (work) for four years. 2. We went to the USA last Monday. Today is Monday. We _ (stay) in the USA since last Monday. have worked have stayed The usages of the present perfect tense 内页篇 0 4 现在完成时的 时间状语 Adverbial clauses of the Adverbial clauses of the present perfect present perfect tensetense Contents 内页篇 用法1 表示过去发生的动作表示过去发生的动作对对 现在产生的现在产生的结果或影响结果或影响 用法2 表示过去发生的动作一表示过去发生的动作一 直直延续延续到现在且有可能到现在且有可能 继续下去的动作或状态。继续下去的动作或状态。 already, yet ever , never , just ,before since VS for Adverbial clauses of the present perfect tense 内页篇 通常用于肯定句中，放在have / has和过去分词之 间，意为“已经”。如: They have already arrived at the hospital. 他们已经到达医院了。 already yet 多用于否定句和疑问句末, 意为还(没)。如: The sun has not risen yet. 太阳还没有升起。 Adverbial clauses of the present perfect tense 内页篇 Test 4 1) Dont worry about him. He has _ arrived at home safely. 2) Have you told him the news _? 3) I have _ eaten some rice. Now I am full. yet already 1.Complete the sentences with the words in the box. already yet already Adverbial clauses of the present perfect tense 内页篇 0101 ever 0202 never 0303 just 0404 before “曾经”，通常用于 疑问句中。 Have you ever been to the USA ? “以前”，用在完成 时中，放在句末。 have never read this kind of books before. “从来不”，用在 否定句中。 Is he famous ?I have never heard of him. “刚刚 ”，用在 陈述句中。 I have just bought a novel。 Adverbial clauses of the present perfect tense 内页篇 Test 4 2.Fill in the blanks with the correct forms. 1) _you ever _ (be) to Hawaii? 2) We _ never _ (see) such an exciting match before. 3) Mother _ just _(clean) the house. Please dont come in. 4) I _ (see) this girl before. Havebeen haveseen hascleaned have seen Adverbial clauses of the present perfect tense 内页篇 用法1 表示过去发生的动作表示过去发生的动作对对 现在产生的现在产生的结果或影响结果或影响 用法2 表示过去发生的动作一表示过去发生的动作一 直直延续延续到现在且有可能到现在且有可能 继续下去的动作或状态。继续下去的动作或状态。 already, yet ever , never , just ,before since VS for Adverbial clauses of the present perfect tense 内页篇 He has stayed here since 5 oclock. since + 时间时间点点 ADD YOUR TITLE HERE 01 03 He has lived here since 5 years ago. since + 时间时间段段 + ago 02 She has taught English since he came here. since + 从句从句 03 since for 04 for + 一段一段时间时间 I have learnt English for 16 years. Adverbial clauses of the present perfect tense 内页篇 Test 4 3. Complete the sentences with for or since. 1) Mr. Brown has had his TV _ 15 years. 2) Ive taken driving lessons _ last month. 3) My friends havent visited me _ my birthday. 4) We havent used our car _ a long time . 5) She hasnt had a good cup of coffee _years. 6) Tom has worn glasses _ he was 7 years old. for for for since since since Adverbial clauses of the present perfect tense 内页篇 Test 4 4. Which one is true？ 1) The movie has started. 2) The movie has started for 10 minutes. Adverbial clauses of the present perfect tense 内页篇 We have learnt English before. Summary Now, we are still learning English.We will learn English in the future.Learning is a lifelong thing. Nothing can stop our steps. 内页篇 Summary The Present Perfect Tense .Teaching aims: 1. Knowledge: a. The structure of the present perfect tense. b. The usages of present perfect tense. 2. Ability: a. Enable students to use the correct tense in their writing and speaking. b. Enable students to use the right words in the present perfect tense. 3. Feelings and attitude: a. Let the students know the importance of English grammar. b. Try to build up students confidence in themselves c. Encourage students to speak English in public. . Important Points: a.Let the students understand the usages of present perfect tense. b. Let the students understand the adverbial clauses of present perfect tense. . Difficult Points: Help students use present perfect tense with verbs to describe events happen at a particular point in time and to describe events that can continue over a period of time. .Teaching methodology: The New Senior English Curriculum Standards aims education for all students and stressed quality-oriented education. The main task of education is to stimulate and cultivate students interest and their confidence in learning the language, help them develop good learning habits and form effective learning strategies, facilitate autonomy and cooperative spirit in learning ; enable students to master basic English language knowledge and skills in listening, speaking, reading and writing. According to the new standards, the students should be the center of the class and the teacher serves as a controller, organizer, participant, or resource-provider most times. Considered with the characteristic of the teaching contents and the learners, I will apply explanation and practicing in my teaching. Most of the usages will be summarized by students themselves. .Teaching aids A computer, black board, chalks . Teaching procedures: Step1. Lead-in 1. Introduce myself 2. Show a video about present perfect tense Step2. Present perfect tense 1. The structure of present perfect tense. 1). have/ has+done 2). Change rules of past participle: regular and irregular change rules 2. The basic sentence patterns of present perfect tense. 1). Negative sentence 2). General question 3. The usages of present perfect tense 1). Usage1: “完成用法” 强调过去发生的动作对现在造成的影响或结果. E.g. Yesterday , we cleaned the classroom. Now , the classroom is clean because we have cleaned it. Exercise: Fill in the blanks with the correct pattern 2). Usage2: “未完成用法” 表动作或状态已开始，持续到现在，可能还会继续进行下去 E.g. I began to teach English at this school five years ago. Now , the classroom is clean because we have cleaned it. Exercise: Fill in the blanks with the correct pattern 4. The adverbial clauses of present perfect tense 1). Usage1: 强调过去发生的动作对现在造成的影响或结果. 常用状语有： already, yet, never, ever, just, before . E.g. They have already arrived at the hospital. The sun has not risen yet. Have you ever been to the USA? I have never heard of him. I have just bought a novel. 现在完成时 past NowFuture I have never read this kind of books before. 2). Usage2: 表动作或状态已开始，持续到现在，可能还会继续进行下去，常用 时间状语 since+时间段+ago/时间点/从句, for+时间段等。 E.g. He has stayed here since 5 oclock. He has lived here since 5 years ago. She has taught English since she came here. I have learnt English for 16 years. Step3. Summary& Homework 1. Summary. After finishing the exercises, let several students stand up and repeat what they have learned this class, then if necessary, the teacher adds something they missed. 2. Homework Which one is true? Find out the answers.