Unit8 第三课时 Section A (Grammar Focus--4c) 课件-2024-2025学年人教版英语八年级下册

第三课时 Section A (Grammar Focus-4c) Unit 8 Have you read Treasure Islead? ---Is he hungry? ---No,he isn't. He has eaten breakfast. Warm- up ---Are the girls cleaning the clothes ? ---No. They have just cleaned the clothes. Grammar Focus Have you read Little Women yet? Yes, I have./No, I haven't. Has Tina read Treasure Island yet? Yes, she has. She thinks it's fantastic. Have you decided which book to write about yet? Yes, I have. I've already finished reading it. It was really good. How is the present perfect tense formed? have/has + 过去分词 Find the present perfect tense. Have you read Has Tina read Have you decided I've already finished already yet yet yet What adverbs are often used with the present perfect tense? Already and yet. Have you read Little Women yet? Yes, I have./No, I haven't. Has Tina read Treasure Island yet? Yes, she has. She thinks it's fantastic. Have you decided which book to write about yet? Yes, I have. I've already finished reading it. It was really good. 含现在完成时的句子如何构成一般疑问句？ 将助动词have/has放在主语之前。 一、现在完成时的基本结构 现在完成时由“助动词 have/has + 过去分词”构成，其基本句式结构为： ① 肯定句：主语 + have/has + 过去分词 + 其他. I have seen this film. ② 否定句：主语 + have/has not + 过去分词 + 其他. I have not seen this film. ③ 一般疑问句：Have/Has + 主语 + 过去分词 + 其他? 肯定回答：Yes, 主语 + have/has. 否定回答：No, 主语 + haven't/hasn't. —Have you seen the film? —Yes, I have. / No, I haven't. 现在完成时（一） 和主语一致 have not = haven't; has not = hasn't have/has 常可缩略为 -'ve/-'s ●现在完成时的用法: 表示过去发生或已经完成的某一动作对现在造成的影响或结果。 I have already read Treasure Island. I have returned the book to the library. I have bought a new house. 1. 规则变化（与动词过去式规则一样，此类称作规则动词） 一般在词尾直接加 -ed 以不发音的e结尾的，加 –d 以“辅音字母+y”结尾的，改y为i加-ed 重读闭音节以一个辅音字母结尾的，双写这个辅音字母后加 –ed work→worked slice→sliced study→studied stop→stopped -ed 的读音规则： ① 在元音或浊辅音后读 [d]，如 tried [traɪd]，lived [lɪvd]。 ② 在清辅音后读 [t]，如 worked [wɜːkt]，stopped [stɒpt]。 ③ 在[t][d]后读[ɪd]，如 mended [mendɪd]，wanted [wɒntɪd]。 过去分词的构成 2. 不规则变化（此类称作不规则动词，有很多） 原形（不定式） 过去式 过去分词 be was/were been have had had choose chose chosen put put put run ran run 参看课本P136-137 Irregular Verbs（不规则动词表） see-saw-seen; be-was, were-been eat-ate-eaten; break-broke-broken go-went-gone; take-took-taken send-sent-sent; find-found-found make-made-made; have-had-had v.-ed 的变化形式大部分与动词过去式形式相同，但是不规则动词的变化形式没有规律，需要记忆 ●现在完成时的时间状语: 用副词already和yet。already一般用于肯定句中, yet一般用于否定句和疑问句中。 We have already finished our homework. We haven’t finished our homework yet.     Have you finished doing your homework yet? already 一般用于肯定句，用于疑问句时表示惊讶，出乎意料。 常放于句中，实义动词之前，助动词之后。 yet 一般用于否定句或疑问句。 常放在句尾，not yet常用在答语中，意为“尚未；还没有”。 现在完成时 一般过去时 用法 时间 状语 谓语 动词 表示过去发生的动作对现在造成的影响，侧重于现在的情况。 表示过去某个时候发生的动作或存在的状态，与现在无关。 常和already, yet, just, ever, never, before, since, for等连用。 常和 yesterday, last week, just now, in 2012, two days ago等具体的表示过去的时间状语连用。 与一段时间连用时，谓语动词要用延续性动词而不用非延续性动词。 谓语动词没有延续性或非延续性动词的限制。 4a Use the words in brackets to complete the conversations. 1. A: Would you like something to drink? B: No, thanks. ______________________. (just / drink some tea) 2. A: I heard you lost your key. ___________________________________? (find) B: No, not yet. I’ve just drunk some tea Have you found it yet? 3. A: Do you know when Tom is leaving? B: ______________________. (already / leave) A: When __________________?(leave) B: This morning. 4. A: Is your sister going to the movies with us tonight? B: No. _____________________________. (already/see the film) Tom/He has already left did he leave She has already seen the film 5. A: What do your parents think about our plan? B: I ____________________________. (not / tell them / yet) have not/haven’t told them yet 4b Fill in the blanks with the correct forms of the words in brackets. Sally _________ (love) reading. In the morning, she reads the newspaper and in the evening she reads books. She ________ already _________ (read) more than 100 different books! Her favorite kind of books is science fiction. She is interested in science and technology and loves to imagine what the world _______ (be) like in 50 years. loves has read will be She _______ (finish) reading a book about robots last week and _________ (write) a book report about it next week for her French class. Every time she is in the library, Sally looks at the many books she _______________ (not read) yet and she can’t wait to read them! finished will write has not read Complete the chart with information about you and a friend. Experiences You Your friend Comments Books I have already read Movies I have already seen Songs I have already heard 4c 1.She __________(not read) the book yet. ________ you ________(decide) which book to buy yet? 2.Tom won't go to the cinema with us because he ________ already ________ (see) the film. 3.David hasn't ________(finish) ________(read) Harry Potter yet. 4.We ________ just ________(clean) the classroom. 5.I ________(lend) my bike to her yesterday, but she ____________ (not give) it back to me yet. Ⅰ.用括号内所给单词的适当形式填空 hasn’t read Have has seen finished have cleaned decided reading lent hasn’t given Exercises Ⅱ.单项选择 1. —The boy misses his parents very much. — So he does. They_______ the hometown for nearly two years. A. have left B. will leave C. have been away from 2. William Shakespeare ______for 400 years, but his works still have great influence today. A. died B. was dying C. has died D. has been dead 3. —Look! Somebody________ the lights. —Well, it wasn’t me. I didn’t do it. A. turns off B. is turning off C. was turning off D. has turned off C D D 4. —Peter, you speak Chinese so well. — Thank you. I_____ Chinese since I came here in 2013. A. will learn B. learned C. have learned D. learn 5. I am surprised at the new look of my hometown, for it_______ a lot over the years. A. changed B. changes C. will change D. has changed C D Homework Recite the sentences in Grammar Focus. Preview Section B 1a-1d. $$