Unit 8 Have you read Treasure Island yet?第3课时 Grammar Focus-【木牍教育】2024-2025学年八年级英语下册同步教学优质课件（人教版）

英语 RJ 八年级 下册 木牍教育-教学设计中心 制作 ※ 建议使用WPS2019打开。 人教八年级下册 Unit 8 Grammar Focus Unit 8 Have you read Treasure Island yet? By the end of the class, you will be able to Objectives 1. Learn the structure and the usage of Present Perfect Tense and use “already” and “yet” correctly; 3. Talk about one's current status with Present Perfect Tense. 2. Remember the rules of past participle and use it to exercise; 课时A计划 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. 现在完成时 The Present Perfect Tense Grammar Focus 课时A计划 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. Grammar 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 课时A计划 二、过去分词的构成 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 课时A计划 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） 课时A计划 三、现在完成时的用法 1. 表示过去发生或已经完成的动作对现在造成的影响或结果。 常和 just（刚刚）, already（已经）, yet（还，仍然）, ever（曾经）, never（从未）, before（以前）, so far（到目前为止）等连用。 — Have you had your breakfast yet? — Yes, I have. I’ve just had it. — Have you ever heard this song? — No. I’ve never heard it before. Julia has collected over 100 beautiful hair clips so far. 课时A计划 现在完成时用法1： 表示过去发生或已经完成的动作对现在造成的影响或结果。 past I had breakfast. I’m not hungry now. present I have already had breakfast. （早餐过去吃的，现在不饿。） 图示法表示 课时A计划 2. 现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态，常与“for + 时间段”或“since + 时间点 / 从句”连用，这时要用延续性动词。 They have worked in this company for 30 years. He has been in the army since 2016. （错：He has joined the army since 2016.） 【特别提醒】如果要对 for 或 since 短语提问，疑问词用 how long。 — How long have you lived in this area? — For at least 10 years. 课时A计划 现在完成时用法2： 表示过去某一时间开始并一直持续到现在的动作或状态。 图示法表示 past I moved here in 1990. I still live here. present I have lived here for 30 years. (30年来一直生活在这里） 课时A计划 他们买了一本字典。 现在完成时与一般过去时在意义上的区别 现在完成时把过去的动作和现在的结果联系起来，一般过去时只限于表示过去的动作本身，与现在的结果无关。 I have cleaned my room. (My room is clean now.) 我已经打扫过我的房间了。 I cleaned my room last week. (I did it in the past.) 我上周打扫了我的房间。 My father has gone to Shanghai.(He went to Shanghai and he is not here now.） 爸爸已经去上海了。 They have bought a dictionary. (They bought a dictionary and they have it now.) 课时A计划 四、already 与 yet 在现在完成时中的用法解析 yet 常用于否定句或疑问句句末。用于表示某事尚未发生或某情形尚未出现，或用于询问某事是否已经发生。 He hasn't finished the book yet. Have you seen him yet? already 常用于肯定句中，用于强调某事已经开始出现；也可用于疑问句中，表示因某事的发生早于预料而感到吃惊。 They have already known each other. Have you eaten all that food already? 课时A计划 3. 日常对话中通常两种时态配合使用，开始提到一件事做没做或发生过时用现在完成时，说起这件事具体情形时用一般过去时。 — Have you been to Japan? — Yes, I have. I went there last year. — Who did you go with? — … 课时A计划 2018 started learning English 2022 learning 4 years have learned English I started learning English in 2018. I am learning English these days. I have learned English for 4 years. （一般过去时） （现在进行时） （现在完成时） 课时A计划 标 志 词 already / yet ever / never just / before / up to now / in the past years already一般用于肯定句；yet用于否定句和疑问句。 多用于否定句和疑问句中，意为“曾经”；“从未”。 already和yet都可以作为现在完成时的标志词，但它们的用法不同。 课时A计划 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 课时A计划 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) 5. A: What do your parents think about our plan? B: I _____________________________. (not / tell them / yet) He has already left did he leave She has already seen the film have not/haven't told them yet 课时A计划 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 yars. loves has read will be 课时A计划 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 hasn’t read 课时A计划 Homework Finish the task in KESHI A JIHUA. 课时A计划 Thanks Class is over! Bye! 人教八年级下册 Unit 8 课时A计划 $$