人教版八年级下册英语Unit8——10单元现在完成时讲解和练习题(无答案)
人教版八年级下英语unit8.9.10单元现在完成时讲解和练习现在完成时（I）第八单元语法知识定义：（1）表示过去发生或已经发生的动作对现在造成的影响或结果,这个影响和结果对现在还必须存在.常与already(已经), yet(已经,还), just(刚刚),ever(曾经)，never等词连用already : 常用于肯定句或疑问句（均表示：已经）. yet: 常用于否定句(表示：还、尚),疑问句末尾（表示：已经）.现在完成时的构成及句型结构：（注：过去分词的变化分规则变化与不规则变化，规则变化与动词原形变过去式一样，不规则变化见教材1.肯定句：主语+have/has+过去分词+其他+时间.2.否定句：主语+haven’t/ hasn’t+过去分词+其他+时间.3.一般疑问句：Have/Has+主语+过去分词+其他+时间？肯定回答：Yes, 主语+have/ has. 否定回答：No, 主语+haven’t/hasn’t.4.特殊疑问句：特殊疑问词+have/has+主语+过去分词+其他+时间？定义：(2)表示从过去开始一直持续到现在还有可能继续持续下去的动作或状态。
(3) 现在完成时与一般过去时的区别：现在完成时属于现在时态的范围，不能和表示过去的时间状语连用，如yesterday,last night, three weeks ago, in2019等.一般过去时只表示过去的动作或状态，和现在不发生关系。
一般过去时可以和表示过去的时间状语连用.例题：1. _____ you ________(clean) the room? Yes, we__________(do) that already.2. When _______ you ______(do) it? We _______(do) it an hour ago.3. ______ he ______(see) this film yet? Yes, ______________4. When _____ he _____(see) it? He______ it last week.5. I _______ (read) the novel twice. It’s interesting.6. Mr. Chen _________(give)up smoking last year.7----. She _____(go) to Pairs, hasn’t she?---Yes,_______ How ____ she ____(go) there? She ____(go) there by air.现在完成时（II）第九单元语法知识1. 构成：含有be动词的现在完成时的谓语部分由“have/has+ been+ to+地点”构成，表示：曾经去过某地…(been是be的过去分词，不规则变化)2. 基本句型：(1)肯定句：主语+have/has+ been+ to+地点.(2)否定句：主语+haven’t/hasn’t+ been+ to+地点.(3)一般疑问句：Have/Has+主语+been + to+ 地点？肯定回答：Yes, 主语+ have/has. 否定回答：主语+haven’t/ hasn’t.（4）特殊疑问句：特殊疑问词+have/has+ 主语+ been?eg: Where have you been?3.用法：用来表示之前已经发生和完成度的动作与状态，其结果却和现在有联系.动作和结果发生在过去，但它的影响现在还在.可以和never, ever, once, twice, three/four…times 等副词连用.eg: They have been to Chongqing twice.I have never been to Sichuan.Has she ever been to Hainan?3. 区别：(1). have/ has been to+地点表示：曾经去过某地，已经回来了(2). have/ has gone to+地点表示：去了某地，还没有回来eg: She has been to Shanghai. （她去过上海，已经回来了）She has gone to Shanghai. （她去了上海，还没有回来）(3). have been in表示“在某地呆了多少时间”，常与时间段状语连用eg: I have been in Shanghai for three years．我到上海已有三年了。
He has been in London for half a month．他来伦敦已有半个月了。
(4). have been on 表示“已经开始了多久表示持续性”eg: The film has been on for ten minutes. 电影已经开始了10分钟了。
例题：1.—Where is your brother?—He __________ the shop. He’ll be back soon.2. — _____ you ever _______ to America?—Yes, I _______ New York twice.3. —David ___________ Australia. —I’m sure he has already arrived.4. —Is Benny here?—No, he ______ the school library. Heleft five minutes ago.5. Mike and his parents __________ the south for half a year.6. Mum is not at home now. she _________ the shop.7. You can’t find him. He__________ Xi’an.8. Mr. Zhang __________ this school for ten years. He knows everyone here.9. Miss. Brown __________ China three times.10. I __________ the West lake, Look, I have taken many photos of it .11. Tom ___________ Jim’s home, but he hasn’t come back.12. We ____________ the bookshop and bought many books.13. My parents _________ Shandong for ten years.14. I____ already ____ (see) the film. I ________ (see) it last week.15. _____ he ____ (finish) his work today? Not yet.16. My father ____ just ____ (come) back from work. He is tired now.17. Where’s Li Ming ? He __________ (go) to the teacher’s office.18. I __________ (work) here since I ______ (move) here in2019.19. So far I _______________(make) quite a few friends here.20. How long ________ the Wangs ______________(stay) here ? For two weeks.21. I ________ just ___________ (finish) my homework. re22. He ________ (go) to school on foot every day.23.____ you ______ (find) your science book yet?24.My little brother ______________(collect) shells for two years .25. ______ Ben _______(read) the book? ----Yes , he has . He _________it last year .26. Julia ___________(visit) the nature museum twice .27. –Anna, _________you ________(see) China’s Got Talent (中国达人秀)？-Of course. I __________it last weekend .28. I _____________________(buy) a new MP4 already . I ________ it yesterday .29.How ________you _________(come) to school this morning?30. _________he __________(hear) of the story before?–Yes, he _____. He_________it last month.现在完成时（III）第十单元语法知识动词按其动作发生的方式，发生过程的长短可分为延续性动词与非延续性动词。
1. 延续性动词：表示能够延续的动作，也可以表示经验与经历.eg: learn, work, stand, lie, walk, sleep, keep, wait, watch, sin g, read, stay, live…延续性动词可以与for 和since 引导的时间状语连用：eg: He has lived here for 6 years.（他在这儿住了六年了，一直住在这儿，live是延续性动词，并且很有可能继续居住下去）I have known her since then.（自从那时起我就认识她了，一直都认识，know是延续性动词）2.非延续性动词：也成终止性动词或瞬间动词，表示不能延续的动作，这种动作发生后立即结束.eg: open, close, begin, finish, come, go, move, borrow, lend, buy, die…非延续性动词不能与for 和since 引导的时间状语连用，常用的时间状语有two years ago, at 5 o’clock, yesterday, the day before yesterday, this morning 等表示过去的时间.eg: His grandmother died 10 years ago.She finished the work at 6 o’clo ck.2. 非延续性动词与延续性动词之间的转换(常用)（1）. 转化为相应的延续性动词，用于现在完成时态eg: borrow →keepbuy →haveput on →wearget to know →knowget to sleep →sleepcatch a cold →have a cold（2）.转化为“be+形容词/副词/介词/名词”begin/start →be on go out →be out die →be deadpen →be open get to/ arrive in（at）/reach →be in+地点leave →be away(from) finish →be over fall ill →be illget up →be up fall asleep →be asleep join →be in+活动/组织go to school →be in school become →be make friends →be friendsclose →be closed go to bed →be in bed come/ go →be + 相应的介词短语例：下面是句子的同义句转换将原句一般过去时改成现在完成时eg: 1. The old man died four years ago. （一般过去时）The old man has been dead for four years. （现在完成时，将die变为be dead）The old man has been dead since four years ago. (现在完成时，since跟过去的时间点)2. I borrowed the book five days ago.---- I have kept the book for five days.---- I have kept the book since five days ago.3. He bought the bike three years ago.-----He has had the bike for three years.-----He has had the bike since three years ago.4. She went to school two days ago.--- She has been in school for two days.----- She has been in school since two days ago.5. My sister became a nurse one year ago.-----My sister has been a nurse for one year.-----My sister has been a nurse since one year.例题：1. Li Lei joined the Party three years ago. （同义句）Li Lei _______the Party ________ three years.Li Lei ___________the Party _________ three years ago.2. My father left Guizhou last week. （同义句）My father ___________Guizhou ___________ a week.My father _______________Guizhou__________ last week.3. The factory opened in 2018. （同义句）The factory__________ten years.The factory _____________ since 2018.4. Mr. Wang reached Beijing five days ago.Mr. Wang Beijing five days ago.Mr. Wang Beijing five days.5. The film began ten minutes ago.The film_______________ for _____________ .The film _____________since ______________6. She bought the new car three years ago.She _______ ________ the new car _______ three years. She _______ ________ the new car ________ three years ago.7. They came to China ten years ago.They _____ _____ _____ China _____ ten years.They _____ _____ _____ China _____ ten years ago.8. Li Hua _____________(have) the camera for 5 years .9.I __________(keep) this book since two days ago .10.We ___________(not hear) from him so far .11.In the past twenty years , my hometown ______________(change) a lot .12. My grandpa ___________(die) for 50 years .13. Jane _____________(leave) since 9:00 this morning .14. That couple _______________(marry) for 15 years .15.We ______________(know) each other since we first met.。
2020年春人教新目标英语八年级下册unit8知识点分析与练习(无答案)
2020年春人教新目标英语八年级下册Unit8 Have_you_read_Treasure_Island_yet？知识点一、重点短语：1.听说hear of2. 像……一样be like3. 出去go out4. 充满full of5. 做完某事finish doing sth6. 关于be about7. 长大grow up 8. 把…放下put …down9. 快点hurry up (in a hurry匆忙地) 10. 造船make a boat11.带回bring back 12.放弃give up13. 等待wait for 14. 砍倒cut down15. 为了食物而杀…kill…for food16. 还有谁who else17.看见某人正在做某事see sb. doing sth. 18. 向（朝）……跑去run towards19. 给某人取名为……name sb.…20. 迫不及待做某事can’t wait to do sth.21.过去常常used to22. 争吵fight over23. 回家return home 24. 在收音机上on the radio25. 使某人做某事make sb. do sth 26. 逐渐认识到come to realize27. 自从……以来ever since 28. ……的家the home of29. 例如such as 30. 属于belong to31. 对某人友好be kind to sb 32. 互相信任trust one another33. 使某人想起……remind sb. that…34. 去过…have been to35. 研究do research on 36. 希望做某事hope to do sth37. 介绍……给……introduce …to38. 失去生命lose one’s life39. 去出国/ 出国学习go / study abroad 40. 数以百万计的；无数的millions of二、重点句子：讲一讲１现在完成时（section A）１.2. 过去分词与过去式的变化相同。
新目标人教版八年级下册第八单元语法现在完成时知识点解析
八年级下册第八单元语法现在完成时知识点讲解1. 现在完成时的含义：在英语语法中，现在完成时是现在时态和完成时态的组合，用来表达具有现在结果的过去事件。
2. 现在完成时的结构：1) 肯定句：主语+ have/has +过去分词例句：I have tried sushi before. 我以前吃过寿司。
He has tried sushi before. 他以前吃过寿司。
2) 否定句：主语+ have not (haven’t/ has not (hasn’t) +过去分词例句：I have not tried sushi before. 我以前没吃过寿司。
He has not tried sushi before. 他以前没吃过寿司。
3) 疑问句：Have/ Has +主语+过去分词?例句：Have you tried sushi before? 你以前吃过寿司吗?Has he tried sushi before? 他以前吃过寿司吗?3. 现在完成时的一般用法1) 表达你在生活中所做的事情例句：I’ve been to England. 我去过英国。
She has never studied Japanese. 她从未学过日语。
2) 表示你做某事的次数例句：I’ve been to Paris three times. 我去过巴黎三次。
How many times have you tried to call her? 你给她打了多少次电话?3) 表示过去开始的，现在仍然存在的情况例句：I’ve known James for 4 or 5 years. 我认识詹姆斯有四五年了。
She’s been the director of that company since 2007. 她从2007年开始担任那家公司的董事。
I’ve known Julie for ten years. (I met her ten years ago and I still know her) 我认识朱莉有十年了。
人教版八年级英语下册现在完成时讲解及练习
人教版八年级英语下册现在完成时讲解及练习现在完成时讲解现在完成时的基本结构是助动词have/has加上过去分词(done)。
在否定句中，主语后面要加上not，构成have/has not的形式。
在一般疑问句中，have/has要提到主语前面。
简略答语中，肯定回答要用Yes，后面跟主语和have/has；否定回答要用No，后面跟主语和haven't/hasn't。
现在完成时可以表示过去发生或已完成的动作对现在的影响或结果。
比如说，“I have spent all of my money (so far)”表示现在我没有钱花了。
另外，现在完成时也可以表示发生在过去某一时刻的、持续到现在的动作或状态。
这时常常和for（+时间段）或since（+时间点或过去时的句子）连用。
例如，“Mary has been ill for three days”表示玛丽已经生病三天了，“I have lived here since 1998”表示我自1998年以来一直住在这里。
现在完成时还有一些标志词，可以表达过去完成的动作对现在的影响。
这些标志词包括already、just和yet。
例如，“He has al ready got her help”表示他已经得到她的帮助，“He hasn't come back yet”表示他还没有回来。
This is the best film I have ever seen。
I have never seen a better movie before.He has never been to Beijing before。
He has never had the chance to visit Beijing.He says he has been to the USA three times already。
He has had the opportunity to visit the USA on three separate ns.So far。
新人教版英语八年级下册unit8重点讲解及练习题讲解学习
新人教版英语八年级下册u n i t8重点讲解及练习题语法聚焦：现在完成时 (Present Perfect Tense)1) 现在完成时的定义：（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。
—It’s so dark. 太黑了。
—Someone has turned off the light. 有人把灯关上了。
（2）表示从过去某一时间开始并一直持续到现在的动作或状态。
常与since+过去的时间点，for+一段时间，so far等时间状语连用。
I have lived here for ten years.我已经住在这里10年了。
（从10年前开始，持续到现在还住这儿）I have lived here since 2003. 自从2003年我就住在这儿。
（从2003年开始，持续到现在还住这儿）2) 现在完成时的构成及句式转换：助动词 have/has + 过去分词①I have finished my homework. (肯定句)②I have not finished my homework. （否定句）③—Have you finished your homework?—Yes, I have. / No, I haven’t, （一般疑问句及肯定、否定回答）现在完成时的标志：①常与just, already, yet, ever, never, before, so far 等连用，强调动作的完成，不强调动作的持续。
Have you ever been to Japan?I have just finished my homework.②for + 时间段；since + 过去的时间点；since + 段时间 ago；since + 一般过去时的句子。
They have known each other for five years.Since he was a child, he has lived in England.do __________ — ____________ go__________ — ___________ read ______ — ______ see _________ —______know____________ — _____________ eat _______ — _________ forget _________ —_________write________-______一、根据句意或汉语提示写词。
现在完成时(unit8--unit10知识点总结)人教版英语八年级下册
现在完成时一．定义三要素与构成〔has/have done〕1.表示到现在为止已经完成或刚刚完成的动作。
By now, I have remembered 1000 English words.2.一件发生在过去的事情对现在产生影响。
常见时间状语：常和already〔已经〕，yet〔已经〕，just〔刚刚〕，still〔仍旧〕，so far〔到目前为止〕，till now,(直到现在)，before〔以前〕，ever〔曾经〕，3 times(三次)，in the past/last..years(在过去几年)I have spent all of my money so far.（1）already:〔已经〕用于确定句位置：放于助动词与done 之间或者放在句末（2）yet:疑问句〔已经〕否认句〔还〕位置：常放句尾（3）ever(曾经)：疑问/确定位置：助动词与done之间（4）never〔从不〕位置：助动词与done之间【练习】〔1〕——你吃过早餐了吗？—Have you had breakfast ____?——是的，我已经吃过了。
/不，我还没吃。
—Yes，I have ________ had it./No，I haven’t had it ____.〔2〕I have ______ read this book，so I don’t know what it is about.〔3〕—Have you _____ been to the Great Wall? It’s so wonderful and great.—No，I have ______ been there.3.一个动作开头于过去，并持续到现在〔或许还将持续下去〕。
常见时间状语：①for＋一段时间“长达/持续了……②since＋过去一个时间点，表示“自从……以来〞时间段+ago，表示“从……以前〞+for+时间段从句〔一般过去时〕eg:Mary has been ill for three days.We have been classmates since 2 years ago.【练习】〔1〕我已经住在这里十年了。
人教版英语八年级下册 Unit8 现在完成时专题讲解 (无答案)
授课主题现在完成时1教学目的通过对本节知识点的学习使学生：1.理解并熟练动词完成时态，并正确运用实践。
2.掌握完成时态在中考中的考点详情3..灵活运用动词时态重、难点动词过去分词规则变化与不规则变化的掌握教学内容课程导入知识讲解现在完成时含义：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构成：1. 肯定句:have（has）＋过去分词注意：该句式中的have 或has是助动词，has用于第三人称单数，其它人称一律用have。
2. 否定句：ha ven’t（hasn’t）＋过去分词3. 疑问句：助动词have或has提到主语之前。
回答用Yes, …have(has).No, …haven’t(hasn’t).(2)表示经历的现在完成时强调过去某一时刻到说话时这段时间中的经历。
Have you ever been to the Great Wall?你去过长城吗?(3)表示延续的现在完成时表示一个动作或状态从过去某时开始，持续到现在，可能要继续下去。
He's loved fishing for a long time.他爱好钓鱼为时已久。
(他现在仍爱好钓鱼)【注意】现在完成时的“未完成”用法既可用于动态动词(主要是持续动词)，也可用于状态动词，但一般不用于表短暂动作或位置转移的动词，如：open, break, go, come, arrive, leave 如用这类动词表示“未完成”，通常只限于否定结构。
I haven't seen a film for weeks.我已经好几个星期没看电影了。
3、现在完成时的时间状语(1)与现在完成时“已完成”用法连用的时间状语①不确定的过去时间状语：already, yet, before, recently, lately等I've seen the film before.我以前看过这部电影。
②频度时间状语：often, sometimes, ever, never, once, rarely等We have never heard of that.我们从未听说过这事。
人教版英语八年级下册unit8练习试题(无答案)
拓展阅读The hottest chilies课标话题自然易读度★★☆词数约220 建议用时4′20″你喜欢吃辣椒吗？你知道最辣的辣椒有多辣吗？You may have experienced the feeling — your mouth feels like it's on fire, and the heat causes your eyes to water. You've just eaten one of nature's hottest foods — the chili pepper (辣椒)! Chili peppers, also called chilies, are found in dishes around the world. They are“hot”because they have something called capsaicin (辣椒素).Capsaicin is very good for your health. It helps you breathe better, and it may even help keep you fit: Capsaicin makes you feel less hungry. It also makes your body burn more calories (卡路里).We can measure (度量) the heat of chilies in units called Scoville Heat Units (SHU). The world's hottest chili is the Carolina Reaper. It sometimes measures up to 2 million SHU!Eating a hot chili can be painful, but some people really like to eat them. Recently, Anandita Dutta Tamuly, a woman from Assam, India, became famous for eating chilies. She ate 51 hot peppers in just two minutes! The peppers she ate were Naga Jolokia ( “Ghost Peppers”). They grow in Assam and are the third hottest chilies in the world.“I found eating chilies was a great way to stay healthy,” says Tamuly. She began eating chilies when she was a child. She eats chilies when she is sick, too.“Every time I have a cold or flu, I just eat some chilies and I feel better.”【Focus】代词常常用来指代前文中出现过的名词或名词短语等。
新人教版英语八年级下册unit8重点讲解和练习题(无答案)
语法聚焦：现在完成时(Present Perfect Tense)1) 现在完成时的定义：（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。
—It’s so dark. 太黑了。
—Someone has turned off the light. 有人把灯关上了。
（2）表示从过去某一时间开始并一直持续到现在的动作或状态。
常与since+过去的时间点，for+一段时间，so far 等时间状语连用。
I have lived here for ten years.我已经住在这里10年了。
（从10年前开始，持续到现在还住这儿）I have lived here since 2003. 自从2003年我就住在这儿。
（从2003年开始，持续到现在还住这儿）2) 现在完成时的构成及句式转换：助动词have/has + 过去分词①I have finished my homework. (肯定句)②I have not finished my homework. （否定句）③—Have you finished your homework?—Yes, I have. / No, I haven’t, （一般疑问句及肯定、否定回答）现在完成时的标志：①常与just, already, yet, ever, never, before, so far 等连用，强调动作的完成，不强调动作的持续。
Have you ever been to Japan?I have just finished my homework.②for + 时间段；since + 过去的时间点；since + 段时间ago；since + 一般过去时的句子。
They have known each other for five years.Since he was a child, he has lived in England.do __________ —____________ go__________ —___________read ______ —______ see _________ —______know____________ —_____________ eat _______ —_________ forget _________ —_________write________-______ 一、根据句意或汉语提示写词。
人教版八年级英语下册时态专讲-现在完成时讲解+练习
人教版八年级英语下册时态专讲:现在完成时讲解+练习一、现在完成时用法：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，或从过去某一时间开始一直延续到现在并且有可能还会持续的动作或状态。
由“have/has+过去分词”构成，主要有两个含义：①表示动作发生在过去，但与现在的情况有联系，有时无时间状语，有时和一些表示不确定的过去时间状语连用，如：many times，just，yet，ever，never，already，before，so far, by now等连用。
②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作，用于延续性动词，且句中常带有表示一段时间的时间状语，如：since + 时间点/从句，for two months, so far等。
二、现在完成时基本结构：主语+have/has+过去分词(done)①肯定句：主语+have/has+过去分词+其他.②否定句：主语+have/has+not+过去分词+其他.③一般疑问句：Have/Has+主语+过去分词+其他.④特殊疑问句：特殊疑问词+一般疑问句（have/has+主语+过去分词+其他）?常与时间状语连用：just, already, yet, ever, never, before, several times.Already: “已经”; yet“仍然, 还”,这两个副词常常用于完成时态, 其中already常用于肯定句, yet常用于否定句和疑问句中。
如: Jim has already finished his work. Jim已经把他的工作做完了。
Mother hasn’t come home yet. 妈妈还没回来。
三、现在完成时一般过去时的区别：现在完成时表示的是与现在有关联的过去事件；而一般过去时则与现在毫无关系，只是单纯的过去的情况。
比较：I have lost my pen, so I have to buy one.我丢了钢笔，所以得去买一枝。
(word完整版)八年级英语下册-现在完成时讲解和练习试题-人教新目标版.doc
八年级英语下册 -现在完成时讲解和练习试题-人教新目标版现在完成时练习die → be dead come back → be backgo out → be outleave → be away get up → be upfinish → be over put on → wear 或 be on1.构成open → be open join → be in 或 be a member of close → be closed go to school → be a student现在完成时是由助动词have(has)+动词的过去分词构成。
助动词说明该谓语是属于现在时范borrow → keep buy → have围。
它和主语的人称、数要保持一致。
过去分词是主要的谓语动词，说明句子的意义。
如： He has been a soldier for three years.他参军三年了。
2.用法His father has been dead for two years.他父亲去世二年了。
（ 1）表示动作发生在过去某个不确定的时间，但对现在留下了某种影响和结果。
常被just 、The film has been on for ten minutes. 电影已开始十分钟了。
already、 yet 等副词修饰。
如：We have studied English for three years. 我们（开始）学英语已三年了。
-Have you had lunch yet? -Yes,I have. I've just had it. 5.现在完成时和一般过去时的区别你（已经）吃午饭了吗？我刚刚吃过。
（现在我不饿了）现在完成时和一般过去时都表示在过去完成的动作。
但现在完成时强调的是这一动作与现（ 2）表示从过去某一时刻开始一直持续到现在的动作或状态。
这个动作可能刚停止，可能仍然在的关系。
如对现在产生的结果或影响等，而一般过去时只表示动作在过去某一时刻发生，不在进行。