Unit6语法讲解及习题_ 现在完成时与 already / yet / ever /never2025-2026学年鲁教版(五四学制）英语八年级上册

鲁教（五四学制）英语八上Unit6语法讲解及习题 现在完成时与 already / yet / ever / never 一、现在完成时（Present Perfect Tense） （一）定义与用法 1. 核心含义：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，也可表示从过去某一时间开始一直持续到现在的动作或状态。 2. 时间标志：already, yet, just, ever, never, since, for, so far, in the past few years 等。 3. 例句： I have already finished reading it. （我已经读完它了。） Have you read Little Women yet? （你已经读过《小妇人》了吗？） She has already read more than 100 different books. （她已经读了100多本不同的书了。） Have you ever read Treasure Island? （你曾经读过《金银岛》吗？） I have never read such an interesting book. （我从未读过这么有趣的书。） （二）句子结构 1. 肯定句：主语 + have/has + 过去分词 I have read Treasure Island. She has finished her homework. 2. 否定句：主语 + have/has + not + 过去分词 I haven't read it yet. She hasn't finished her homework. 3. 一般疑问句：Have/Has + 主语 + 过去分词? Have you read Little Women yet? Yes, I have. / No, I haven't. 4. 特殊疑问句：疑问词 + have/has + 主语 + 过去分词? What books have you already read? Who has read Treasure Island? （三）过去分词变化规则 类别 规则 例词 一般动词 直接加 -ed work → worked, play → played 以e结尾 加 -d love → loved, live → lived 辅音 + y 结尾 变 y 为 i 加 -ed study → studied, carry → carried 重读闭音节 双写末尾辅音字母加 -ed stop → stopped, plan → planned 不规则变化 特殊变化 go → gone, see → seen, read → read, write → written, finish → finished （四）already / yet / ever / never 的用法 词 含义 用法 位置 例句 already 已经 用于肯定句 句中（have/has 后）或句末 - I've already read it. - I've read it already. yet 已经；还 用于否定句和疑问句 句末 - Have you read it yet? - No, I haven't read it yet. ever 曾经 用于疑问句和否定句 句中（have/has 后） - Have you ever been to Beijing? - I don't think I have ever seen him before. never 从未；绝不 用于肯定句表否定含义 句中（have/has 后） - I have never read such an interesting book. - He has never been late for school. 二、专项练习题 Ⅰ. 单项选择 (15题) 1. Have you read Little Women yet? Yes, I ___________. A. have B. has C. did D. do 2. Has Tina read Treasure Island yet? Yes, she ___________. She thinks it's fantastic. A. have B. has C. did D. do 3. Have you decided which book to write about yet? Yes, I have. I've already ___________ reading it. A. finish B. finished C. finishing D. finishes 4. I've just ___________ some tea. A. drink B. drank C. drunk D. drinking 5. Have you ___________ your key? No, not yet. A. find B. found C. finding D. finds 6. Do you know when Tom is leaving? He ___________ already ___________. A. have; left B. has; left C. have; leave D. has; leave 7. When ___________ he ___________? This morning. A. have; left B. has; left C. did; leave D. does; leave 8. Is your sister going to the movies with us tonight? No. She ___________ already ___________ the film. A. have; seen B. has; seen C. have; see D. has; see 9. What do your parents think about our plan? I ___________ them ___________. A. haven't told; yet B. haven't told; already C. didn't tell; yet D. didn't tell; already 10. Have you ___________ been to Beijing? No, I have ___________ been there. A. ever; never B. never; ever C. ever; ever D. never; never 11. I have ___________ read such an interesting book. A. ever B. never C. already D. yet 12. She ___________ already ___________ more than 100 different books! A. have; read B. has; read C. have; readed D. has; readed 13. She is interested in science and technology and loves to imagine what the world ___________ like in 50 years. A. be B. is C. was D. will be 14. She ___________ reading a book about robots last week and ___________ a book report about it next week for her French class. A. finish; write B. finished; wrote C. has finished; will write D. finishes; writes 15. Every time she is in the library, Sally looks at the many books she ___________ yet and she can't wait to read them! A. hasn't read B. haven't read C. didn't read D. don't read Ⅱ. 用所给词的适当形式填空 (10题) 16. A: Would you like something to drink? B: No, thanks. I've just ___________ (drink) some tea. 17. A: I heard you lost your key. ___________ you ___________ it yet? (find) B: No, not yet. 18. A: Do you know when Tom is leaving? B: He ___________ already ___________. (leave) A: When ___________ he ___________? (leave) B: This morning. 19. A: Is your sister going to the movies with us tonight? B: No. She ___________ already ___________ the film. (see) 20. A: What do your parents think about our plan? B: I ___________ ___________ them ___________. (not tell / yet) 21. Have you ___________ (ever) read Treasure Island? No, I have ___________ (never) read it. 22. Sally ___________ (love) reading. In the morning, she reads the newspaper and in the evening she reads books. 23. She ___________ already ___________ (read) more than 100 different books! 24. She ___________ (finish) reading a book about robots last week and ___________ (write) a book report about it next week for her French class. 25. 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! Ⅲ. 句型转换 (5题) 26. I have read Little Women. (改为一般疑问句) ___________ you ___________ Little Women? 27. She has read Treasure Island. (改为否定句) She ___________ ___________ Treasure Island. 28. He has already finished reading it. (改为否定句) He ___________ finished reading it ___________. 29. They have already decided which book to write about. (对划线部分提问) ___________ have they already ___________? 30. I haven't read it yet. (改为同义句) I ___________ read it ___________. Ⅳ. 情景对话 (5题) 根据上下文，用合适的句子补全对话。 A: 31. ___________________________________________________________________ (你曾经读过《金银岛》吗？) B: Yes, I have. I think it's fantastic. A: 32. ___________________________________________________________________ (你已经决定写哪本书了吗？) B: Yes, I have. I've already finished reading it. A: 33. ___________________________________________________________________ (这本书怎么样？) B: It was really good. A: 34. _____________________________________________________________________ (你还读过其他什么书吗？) B: I've also read Tom Sawyer and Harry Potter. A: 35. ____________________________________________________________________ (你觉得它们怎么样？) B: Well, I think Harry Potter was exciting, but Tom Sawyer was a bit boring. 三、答案与解析 Ⅰ. 单项选择 (15题) 1. A. have 解析：现在完成时的一般疑问句回答用 Yes, 主语 + have/has。 2. B. has 解析：现在完成时的一般疑问句回答用 Yes, 主语 + have/has，she 是第三人称单数，用 has。 3. B. finished 解析：现在完成时的结构是 have/has + 过去分词，finish 的过去分词是 finished。 4. C. drunk 解析：现在完成时的结构是 have/has + 过去分词，drink 的过去分词是 drunk。 5. B. found 解析：现在完成时的结构是 have/has + 过去分词，find 的过去分词是 found。 6. B. has; left 解析：already 是现在完成时的标志词，he 是第三人称单数，用 has left。 7. C. did; leave 解析：this morning 是过去的时间，用一般过去时。 8. B. has; seen 解析：already 是现在完成时的标志词，she 是第三人称单数，用 has seen。 9. A. haven't told; yet 解析：yet 用于否定句，现在完成时的否定句用 haven't/hasn't + 过去分词。 10. A. ever; never 解析：ever 用于疑问句表示“曾经”，never 用于肯定句表否定含义“从未”。 11. B. never 解析：never 用于肯定句表否定含义“从未”，符合“我从未读过这么有趣的书”的语境。 12. B. has; read 解析：already 是现在完成时的标志词，she 是第三人称单数，用 has read。 13. D. will be 解析：in 50 years 是将来的时间，用一般将来时。 14. C. has finished; will write 解析：last week 是过去的时间，用现在完成时表示对现在的影响；next week 是将来的时间，用一般将来时。 15. A. hasn't read 解析：yet 用于否定句，现在完成时的否定句用 haven't/hasn't + 过去分词，she 是第三人称单数，用 hasn't read。 Ⅱ. 用所给词的适当形式填空 (10题) 16. drunk 17. Have; found 18. has; left; did; leave 19. has; seen 20. haven't told; yet 21. ever; never 22. loves 23. has; read 24. has finished; will write 25. hasn't read Ⅲ. 句型转换 (5题) 26. Have; read 解析：现在完成时的一般疑问句，将 have/has 提前。 27. hasn't read 解析：现在完成时的否定句，在 have/has 后加 not。 28. hasn't; yet 解析：already 用于肯定句，yet 用于否定句和疑问句，否定句中 yet 放在句末。 29. What; decided 解析：对事物提问用 what，现在完成时的特殊疑问句结构是疑问词 + have/has + 主语 + 过去分词。 30. haven't; yet 解析：not...yet 表示“还没有”。 Ⅳ. 情景对话 (5题) 31. Have you ever read Treasure Island? 32. Have you decided which book to write about yet? 33. What's it like? / What do you think of it? 34. Have you read any other books yet? 35. What do you think of them? / How do you like them? ( 1 ) 学科网（北京）股份有限公司 $