最新人教版八年级英语下册第八单元现在完成时讲解及练习
现在完成时讲解一．基本结构：助动词have/has+过去分词(done)二．句型：否定句：主语+have/has + not+过去分词+其他.一般疑问句：Have/Has+主语+过去分词+其他.简略答语: Yes, 主语+ have/has.(肯定)No, 主语+ haven't/hasn't.(否定)三．用法（1）现在完成时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I have spent all of my money (so far).(含义是:现在我没有钱花了.)Guo zijun has (just/already) come. (含义：郭子君现在在这儿)My father has gone to work.(含义是:我爸爸现在不在这儿) （2）现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作（用行为动词表示）或状态（be动词表示）常与for（+时间段）,since（+时间点或过去时的句子）连用.①for+时段②since+过去一个时间点（译为：自从……以来）③since+时段+ago④since+从句（过去时）●⑤It is+时段+since+从句（过去时）Mary has been ill for three days.I have lived here since 1998.四．has gone (to),has been (to), has been (in) 的区别Have/Has gone(to) :去了(现在不在说话现场)Where is your father？He has gone to Shanghai.Have/Has been (to) :去过（已不在去过的地方）My father has been to Shanghai.Have/has been in：呆了多久（还在所呆的地方）My father has been in Shanghai for two months. /since two months ago. 五．现在完成时的标志1.现在完成时的含义之一是过去完成的动作对现在仍有影响,用以下四大标志词可以表达这种含义:* 以already, just和yet为标志He has already got her help.他已得到她的帮助。
He has just seen the film.他刚刚看过这场电影。
He hasn't come back yet.他还没有回来。
* 以ever和never为标志This is the best film I have ever seen.这是我曾经看过的最好的一部电影。
He has never been to Beijing.他从没有到过北京。
* 以动作发生的次数为标志He says he has been to the USA three times. 他说他已经去过美国三次了。
* 以so far（到目前为止）为标+beforeHe has got to Beijing so far.到目前为止他已到了北京。
She has passed the exam so far.到目前为止她已经通过了考试。
2.过去已经开始的动作一直延续到现在, 甚至有可能继续延续下去,我们可以从动作“延续”的特性和“时间”点段的区分入手,进一步学习现在完成时。
* ①for+时段②since+过去一个时间点（过去从句）为标志注意：1)现在完成时不能单独与过去的时间状语连用, 如yesterday, last week, three years ago 等; 2)不能与when连用 2.现在完成时往往同表示不确定的过去时间状语连用六．过去分词1 、规则动词：规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。
四点变化规则：(1)、一般动词，在词尾直接加“ ed ”。
work---worked---worked ,visit---visited---visited(2)、以“ e ”结尾的动词，只在词尾加“ d ”。
live---lived---lived ,(3)、以“辅音字母+ y ”结尾的动词，将"y" 变为"i" ，再加“ ed ”。
study---studied---studied ,cry---cried---cried(4)、重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ed ”。
stop---stopped---stopped , drop---dropped--dropped2 、不规则动词：AAA型原型过去式过去分词burst burst burst hurt hurt hurt let let letcast cast castcost cost costcut cut cuthit hit hitput put putset set setshut shut shutspread spread spreadread read read read原形发音为/ri:d/,过去式和过去分词发音为/red/ AAB型beat beat beatenABA型become became becomerun ran runcome came come特殊情况ABB型bring brought broughtbuy bought boughtbuild built builtburn burnt burntcatch caught caughtdig dug dugfeel felt feltfight fought foughtfind found foundhear heard heardhold held heldkeep kept keptlay laid laidlead led ledlose lost lostmake made mademeet met metsell sold soldshoot shot shotsit sat satstand stood stood sweep swept swept teach taught taughttell told toldthink thought thought win won wonABC型begin began begunblow blew blownbreak broke broken choose chose chosen draw drew drawndrive drove drivendrink drank drunkfly flew flownforgive forgave forgiven forget forgot forgotten freeze froze frozengive gave givengrow grew grownknow knew knownride rode riddenrise rose risenring rang rungshake shook shaken sing sang sungsink sank sunkswim swam swum throw threw thrown write wrote written七．瞬间动词（buy, die, join, come，go, leave, join ……）不能直接与for since 连用。
要改变动词buy----have borrow -----keepcome/arrive/reach/get to-----be ingo out----be out leave ----be awaybegin-----be on finish----be overopen----be open close -----be closeddie----be dead★1.have代替buyMy brother has had(不能用has bought) this bike for almost four years.★2、用keep或have代替borrowI have kept(不能用have borrowed) the book for quite a few days.★3、用be替代becomeHow long has your sister been a teacher?★4、用have a cold代替catch a coldTom has had a cold since the day before yesterday.★5、用wear代替put onb)用“be＋形容词”代终止性动词1、be＋married代marry2、be＋ill代fall (get) ill3、be＋dead代die4、be＋asleep代fall (get) asleep5、be＋awake代wake/wake up6、be＋gone代lose, die, sell, leave7、be＋open代open 8、be closed代close/shut9、be＋missing(gone, lost)代losec)用“be＋副词”代终止性动词1“be＋on”代start, begin2“be＋up”代get up3“be＋back(to)”代return to, come back to, go back to4“be here (there)”代come(arrive, reach, get) here或go (arrive, reach, get) the re等等d)用“be＋介词短语”代终止性动词1.“be in/at +地点”代替go to /come to2.用be in the army 代替join the army3.“be in/at +地点”代替move to常用瞬间动词变延续性动词表：1. have arrived at/in sw. got to/reached sw. come/gone/moved to sw.→have been in sw./at…相应的介词2. have come/gone back/returned → have been back3. have come/gone out →have been out4. have become → have been5. have closed / op ened→ have been close/open6. have got up → have been up；7. have died → have been dead；8. have left sw. → have been away from sw.9. have fallen asleep/got to sleep → have been asleep；10. have finished/ended/completed → have been over；11. have married → have been married；12. have started/begun to do sth. → have done sth. ；13. have begun → have been on14. have borrowed/bought →have kept/had15. have lost → haven’t had16. have put on →have worn17. have caught /get a cold → have had a cold；18. have got to know → have known19. have/has gone to → have been in20. have joined/have taken part in the league/the Party/the army→have been a member of/ have been in/have been the Party’s member/the l eague member/the soldier…现在完成时练习(一) A)选用have, has填空:1.I _______ told him the news.2.She ________ come back from school.3.You ________ won the game.B)按要求改写下列各句:4.They have bought a computer.(改成否定句)_________________________________________5.He has lost his book.(先改成一般疑问句,再作肯定与否定回答)_________________________________________C) 单项选择6. -Where have you _____, Kate?-I've ______ to the bank.A. gone, goneB. been, beenC. gone, beenD. been, gone7. Her grandfather ______ for two years.A. diedB. has diedC. has been deadD. has been died8. It's six weeks ______ I met you last.A. whenB. sinceC. beforeD. for9. Tom and Jack have arrived at West Hill Farm already.A. have gotB. have gone toC. have been toD. have reached现在完成时练习（二）一、单项选择。
八年级英语下册-现在完成时态的讲解与练习-人教新目标版
八年级英语下册-现在完成时态的讲解与练习-人教新目标版-CAL-FENGHAI.-(YICAI)-Company One1现在完成时讲解与练习1.构成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。
2.用法（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、already、yet 等副词修饰。
如：-Have you had lunch yet -Yes,I have. I've just had it.你（已经）吃午饭了吗我刚刚吃过。
（现在我不饿了）（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，可能仍然在进行。
常带有for和since等表示一段时间的状语。
\如：He has taught here since 1981他自1981年就在这儿教书。
（可能还要继续教）I have't seen her for four years. 我有四年没见到她了。
3．结构1）．陈述句结构：主语＋have( has)（not）+过去分词＋其它。
have not=haven’t has not=hasn’t. 2）．一般疑问句结构：Have( Has )＋主语＋过去分词＋其它？3）．特殊疑问句：特殊疑问词＋have(has) +主语+ 过去分词＋其它？eg. He has already finished his homework. He hasn’t finished his homework yet.Has he finished his homework yet --Yes, he has./ No, he hasn’t./ No, not yet.（3）表示说话前发生过一次或多次的动作，现在成为一种经验，一般译为汉语“过”，常带有twice, ever, never, three times等时间状语。
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。
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。
人教版英语八年级下册单元Unit 8 知识点+测试卷+思维导图
Unit 8 Have you read Treasure Island yet?1.重点词汇：page, fiction,pop, fan, million, record, line, success, beauty, technology, treasure, island, ship , sand, land, mark, gun, tool, introduce, belong, forever, abroad...2. 短语归纳：1. full of 满是……的；（有）大量的；（有）丰富的2. hurry up 赶快，急忙（做某事）3. science fiction 科幻小说（或影片等）4. ever since 自从5. one another 互相6. do some research on sth 对……做研究7. see sb do sth 看见某人做某事3. 必背典句：1. -Have you read Little Woman yet? 你读过《小妇人》吗？-No, I haven’t. Have you? 不，我没有。
你有吗？-Yes, I’ve already read it. 是的，我已经读过了。
2. Sarah hasn’t been to Nashville yet, but it is her dream to go there one day.莎拉还没去过纳什维尔，但有一天去那里是她的梦想。
3. She has already read a lot about the place and done some research on it.她已经读了很多关于这个地方的书，并对它做了一些研究。
4.语法知识：1. 现在完成时的构成现在完成时由“助动词have/has+动词的过去分词”构成。
规则动词的过去分词构成与动词过去式相同，如finish-finished；不规则动词需要特殊记忆。
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。
人教版八年级下英语Unit8 课时练习(短语+语法讲练+答案)
Unit 8 Have you read Treasure Island yet?课时练习一、短语赶快满足…的科幻小说乡村音乐自从互相放下长大期限等待砍倒尝试做跑向与…同住争吵迫不及待做流行乐曲乡村乐曲看见某人正在做二、句型①—Have you read Little Women yet?—Yes, I have.—No, I haven’t.②—Has Tina read Treasure Island yet?—Yes, she has. She thinks it’s fantastic.③—Have you decided which book to write about yet?—Yes, I have. I’ve already finished reading it. It was really good.三、语法讲练[现在完成时]（一）概念:现在完成时( The Present Perfect Tense)是过去的动作或状态持续到现在，对现在造成的影响，可能持续发生下去。
（二）句型1.基本句型助动词have(has)+过去分词e.g. I have watched this movie.2.否定句主语+助动词have(has)+not+过去分词e.g. I haven’t finished my homework.3.一般疑问句助动词have(has)+ 主语+过去分词e.g. Have you read this book?肯定回答：Yes, 主语+have/has.否定回答：No, 主语+haven’t/hasn’t.（三）用法1.现在完成时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。
e.g. ①-Have you had your lunch yet?-Yes, I have. I’ve just had it.②-Have you read Little Woman yet?-No, I haven’t.2.某些动词的现在完成时可表示过去某一时间开始并一直持续到现在（包括“现在”）的动作或状态，可以和表示延续的时间状语连用。
(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。
人教版八年级下册英语Unit8——10单元现在完成时讲解和练习(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。