英语人教版八年级下册since 和 for的用法

初中英语学习材料madeofjingetiejisince 和for 的用法(用于现在完成时)表示过去已经开始持续到现在的动作或状态常用的时间状语有：for, since, how long, so far, these days等。

1. since :a).since +时间点①年代②时刻数③一段时间+agob).现在完成时：主句(主语+have/has +延续性动词的过去分词)+ since +从句一般过去时c) It’s +时间段+since +短暂性动词的过去式d).时间段+has passed +since +短暂性动词的过去式for +一段时间练习：用since和for填空1) ______ two years 2) _______ two years ago 3) _______ last month4) ______ 1999 5) _______ yesterday 6) _______ 4 o’clock7) ______ 4 hours 8) _______ an hour ago 9) _______ we were children10) _____ lunch time 11) ______ she left here12). He has lived in Nanjing ________ the year before last.13). I’ve known him __________ we were children.14). Our teacher has studied Japanese _________ three years.15). She has been away from the city ___________ about ten years.16). It’s about ten years __________ she left the city.2. for: for +一段时间= since +一段时间+ ago3. 与时间段连用时，短暂性动词应改为相应的延续性动词。

人教版Go for it!八年级下册英语各单元知识点总结Unit 1 What’s the matter?重点：1、态动词should & shouldn’t 的用法;2、have + 疾病;3. 反身代词的用法。

难点：能询问并表述身体的种.种不适以及对他人身体的种.种不适给予适当的建议。

知识点：What’s the matter? 怎么了? What’s the matter with you? = What’s the trouble with you? = What’s wrong with you? 你怎么了?have a cold = catch a cold 感冒have a stomachache 胃痛have a sore + 部位……痛lie down 躺下take one’s temperature 量体温have a fever 发烧have a cough 咳嗽take breaks 休息get an X-ray 拍X光片away from 远离on the side of the road 在马路边shout for help 大声呼救get off 下车to one’s surprise 出乎某人意料thanks to 多亏;由于in time 及时right away 马上，立即get into 陷入get into trouble 陷入困境have a toothache 牙痛put one’s head down 低头have a nosebleed 流鼻血put a bandage on sth. 用绷带包扎get hit on the head 砸到头(注意v.+ on the + 身体部位的表达方达) be interested in 对……感兴趣There were many times when …(when 引导的定语从句)be used to doing sth. 习惯做某事take risks 冒险because of 因为in …situation 处于……境地run out 用光get out of 逃离of importance = important (of + n. = adj.) be in control of 管理make a decision 做决定give up 放弃Unit 2 I’ll help to clean up the city parks.重点&难点：1、不定式作宾语、状语和宾补的用法;2、could表建议时的用法;3、掌握短语：run out of, take after, fix up, give away等;4. 学会用will 和would like表达意愿。

Unit 10 I ’ve had this bike for three years。

Section A1. for +一段时间表示动作持续一段时间，用于现在完成时2。

keep (kept ；kept）保留*用作系动词,保持（某种状态),其后常接形容词作表语。

Please keep quiet / silent! 请保持安静！＊用作实义动词(1)保管；保存；保留Please keep these things for me while I am away.(2）赡养；饲养I used to keep sheep in my childhood.（3)坚持；继续接V-ing 形式作宾语。

If you keep practicing your spoken English，you'll soon make great progress.（4)阻止；阻碍keep sb/sth from doing sth 其中介词from 不能省略The heavy rain didn’t keep them from watchin g the football match.（5）保持其后常接复合宾语，表示使（某人或某物）保持某种状态或使某一动作继续。

① keep + sb/sth + 介词If your hands are cold, keep them in your pockets。

② keep + sb/sth + 形容词These gloves will keep your hands warm。

③ keep + sb/sth + V—ing ，“让某人/ 某物一直……”,强调动作的持续性。

I’m sorry I've kept you waiting. 很抱歉，让你久等了.keep a record 保持记录，keep in touch (with）保持与……的联系keep out (of）把……关在外面keep up 保持；使……不能入睡keep one's / an eye on密切注视keep away (from) 离开keep in mind 牢记keep one’s word 遵守诺言3。

人教版▏八年级英语（下册）Unit 10 词汇、句型精讲词汇精讲1. for/since(1) for与表示一段时间的词连用，表示“做某事多长时间了”，常用于现在完成时，表示从过去某时开始，持续到现在的动作或状态。

for所在句子中的动词是延续性动词。

例如：I’ve lived inChinafor two years. 我住在中国两年了。

I’ve known him for more than twenty years. 我认识他20多年了。

(2) since作连词，引导时间状语从句，从句用一般过去时，主句常用完成时。

例如：I have studied English since I came here. 自从我来这里就学习英语。

I have known her since I was five years old. 自从我五岁就认识她。

since还可以作介词，连接一个过去的时间点或一段时间+ago。

例如：She has been ill since last weekend.她自从上周末就病了。

She has been in Wuhan since four years ago.自从四年前她就在武汉。

2. makermaker是名词，意为“生产者；制造者”，是由“动词make + 后缀-r”构成的。

英语中，表示职业或身份的名词小结：(1) 以-ist结尾的有：pianist钢琴家chemist化学家violinist小提琴家physicist物理学家scientist科学家(2) 以-er，-r或-or结尾的有：teacher教师painter画家writer作家singer歌唱家visitor参观者 actor演员engineer工程师inventor发明家professor教授reporter记者(3) 以-man结尾的有：postman邮递员policeman警察businessman商人spaceman宇航员fisherman渔夫dustman清洁工(4) 以-ian结尾的有：musician音乐家politician政治家3. certaincertain作形容词，意为“某种；某事；某人”。

Unit 10 I’ve had this bike for three years.课时3 Grammar现在完成时（三）含有since和for的现在完成时态since和for是现在完成时当中常见的标志词。

since“自从……”，for“持续了……”。

since用来说明动作的开始时间，for用来说明动作延续的时间长度考点1 since和for是现在完成时的重要标志Something ________ in our hometown since 2014. Now it ________ very modern.A. is changed; is lookedB. has changed; looksC. changed; looks【答案】B【解析】本题用寻找题眼法。

根据since可知第一句用现在完成时；由now可知第二句应用一般现在时。

考点2 since和for的用法（1）since的用法since+过去的时间点。

如：年、月、日、几点等☞since 1990 自从1990年起☞since 5 o’clock 自从五点起since+ 时间段+ ago☞since 3 months ago 自从三个月以前since+ 一般过去时的从句☞since you left home 自从你离开家以后①My grandparents ________ in that city since 2008.A. will liveB. liveC. have livedD. were living【答案】C【解析】句意：我的祖父母从2008年就生活在哪个城市里。

since＋过去的时间点是现在完成时的标志。

②I'm looking after Tom today. He's been in my house ________ 8：00 this morning.A. atB. sinceC. forD. till【答案】B【解析】句意：我今天一直在家照看汤姆。

“for”和“since”在现在完成时中的用法如下：
“for”用于表示一个时间段，即动作持续的时间长度。

它通常与表示时间的名词（如年、月、日、小时等）连用，表示某个动作或状态持续了多长时间。

例如：“I have lived here for five years.”（我已经在这里住了五年了。

）
“since”用于表示一个时间点，即动作开始的时间。

它通常与表示过去某个时间点的词语（如从句、过去分词等）连用，表示某个动作或状态从何时开始一直持续到现在。

例如：“I have not seen him since last year.”（自从去年以来我就没有见过他。

）
需要注意的是，“for”和“since”在现在完成时中的用法是有所区别的，需要根据具体语境进行区分。

同时，在使用现在完成时时，还需要注意动词的正确形式，以及与时间状语的搭配等问题。

人教版八年级英语下册各知识点归纳总结Unti1 what’s the matter?短语归纳1.too much 太多2.lie down 躺下3.get an X-ray 做个X光检查4.take one ’s temperature 量体温5.put some medicine on ......在....上敷药6.have a fever 发烧7.take breaks /take a break 休息 8.without thinking twice 没多想9.get off 下车 10.take sb to the hospital 送某人去医院11.wait for等待 12.to one’s surprise 使.......惊讶的13.thanks to多亏于；由于 14.in time及时15.think about 考虑 16.have a heart problem患有心脏病用法归纳1.need to do sth .需要去做某事2.see sb doing sth 看见某人正在做某事3.ask sb sth 询问某人某事4.expect sb to do sth 期望某人做某事5.agree to do sth 同意做某事6.help sb (to) do sth 帮助某人做某事7.want to do sth 想要做某事 8.tell sb to do sth 告诉某人做某事9.have problems(in) doing sth 做某事有困难 e sth to do sth用某物去做某事语法点1.询问某人的健康问题及遇到麻烦的表达方法2.情态动词should的用法3.不定代词的用法精细解读1. What’s the matter (with you)? 怎么了？出什么事了？What’s the trouble/ the problem / wrong with sb./ sth.?2. I had a cold.我感冒了。

人教版八年级下册英语各单元知识点归纳总结八年级研究群人教版八年级下册英语各单元知识点归纳总结Unti1 what’s the matter?短语归纳1.too much太多2.lie down躺下3.get an X-ray做个X光检查4.take one’s temperature量体温6.have XXX发烧7.XXX休息8.without XXX没多想9.get off下车10.XXX送某人去医院11.wait for等待13.XXX to多亏于；因为14.in time实时15.think about考虑16.have a heart problem患有心脏病17.get into the trouble遇到麻烦18.do XXX做正确的事情事情19.fall down跌倒21.get hit/sunburned摔伤/烧伤23.be used to惯于....24.XXX挑战25.XXX落空生命26.because of因为27.run out of用完28.cut off切除29.get out of从...出来30.XXX做决意31.be in control of掌管；管理32.give up放弃用法归纳1.need to do sth .需要去做某事2.XXX看见某人正在做某事3.XXX询问某人某事4.4.XXX期望某人做某事5.agree to do XXX同意做某事6.help sb (to) do XXX匡助或人做某事7.want to do XXX想要做某事8.tell sb to do sth通知或人做某事9.have problems(in) XXX做某事有困难10.XXX用某物去做某事used to doing XXX惯于做某事12.seem to do XXX好像做某事13.keep XXX继续做某事14.XXX做某事语法点1.讯问或人的安康题目及碰到贫苦的表达办法2.情态动词should的用法3.不定代词的用法Unit 2 I’ll help to clean the city parks短语归纳1.clean up打扫干净2.cheer up（使）变得更高兴；振奋起来3.give out分发5.give away赠予；捐赠6.set up树立；设立7.make a difference有作为e up with想出9.put off推迟10.put up张贴11.call up打电话给13.care for照顾；照看14.give up放弃15.try out for参加选拔e true实现17.run out of用光19.fix up修理用法归结1.need to do sth需要做某事2.make plan to do sth制订打算做某事3.ask sb (not ) to do sth请求或人（不要）做某事ed to do sth曩昔经常做某事5.decide to do XXX决意做某事6.help sb (to)do XXX帮助某人做某事8.make it possible for sb to do sth使得做某事对或人来讲是可能的拓展链接动词+副词短语XXX up使高鼓起来clean up清扫洁净put up张贴mix up 修缮give away赠送give out分发give up放弃use up用光get up起床hand in上交put off推延pick up捡起think over细致思考turn down关小音量set up建立set off出发look out小心动词+介词短语hear of听说pay for支付wait for等待动词+副词+介词短语get out of制止come up with想出catch up with追上遇上look forward to等候渴望go on with继续动词+名词短语have a rest苏息一下take a walk漫步make XXX出错have a try试一下XXX发生tell a XXX撒谎make a decision做决定动词+名词+介词短语Be+形容词+介词短语XXX for迟到be angry with生气be fond of喜欢be good at 擅长动词不定式归纳只跟动词不定式做宾语的动词决心学会有希望（decide,learn,wish,hope）同意计划莫假装（agree,plan,pretend）忘记拒绝会失望（forget,refuse,fail）准备设法来帮忙（prepare,try,manage,help）提供请求负担起（offer,beg,afford）记得阻止理应当（remember stop,be supposed）题链接1.-Tom failed the exam again-Sorry to hear that. We should do XXX.A. XXXC.XXX2.XXX.A. XXXC. XXX cleaning3.XXX XXX.A. used to beB. is used to beC.was used to beD.is4.The old man lives,but he doesn’t feel .A. alone;XXX;lonelyC.lonely;aloneD. alone;lonely5.XXX, I have XXX tell6.--The old manall his money to a XXX.We all feel after hear of the news.A.excited;excitingB.exciting;excitingC.excited;excitingD.exciting;excitedUnit3 Could you please clean your room?短语归结1.do XXX洗餐具2.XXX out the XXX倒垃圾3.at least至少4.throw down扔下5.all the time一向；重复6.in surprise惊讶地10.provide XXX向某人提供某物11.depend on依赖；信赖12.look after照顾；照看13.take care of照顾14.as a result结果用法归结1.XXX XXX做完某事2.want sb to do XXX想要某人做某事3.try (not) to do sth尽力（不）做某事4.let sb do XXX让或人做某事6.XXX做某事7.learn to do sth研究做某事8.learn how to do sth研究怎样做某事语法点神态动词could的用法表示请求与准许，could委婉有礼貌；表示能力会不会，could只把过去表Unit 4 why don’t you talk to your parents?短语归结1.too much太多（修饰不可数名词）2.hang out闲逛3.too many太多（修饰可数名词复数）4.get into a fight争吵5.call sb up给某人打电话6.XXX谈论7.XXX浏览8.give back清偿9.be angry with sb生或人的气10.a big deal紧张的工作11.work out解决；算出12.get on with sb与某人和睦相处13.XXX与某人交流16.in front of在...前面17.not... any more不再...18.so much/many那末多pete with sb与某人竞争20.cut out删除；删去21.all kinds of各类百般23.XXX...看24.turn down调小用法归纳1.allow sb to do XXX允许某人做某事2.why don’t you do sth?为甚么不做某事呢？3.why not do sth ?为什么不做某事呢？4.find sb doing XXX发觉或人在做某事5.tell sb to do XXX告诉某人做某事6.refuse to do XXX回绝做某事7.let sb do XXX让或人做某事8.offer to do XXX主动提供做某事9.not....until....直到....才...10.it’s time to do sth该做某事了12.keep XXX连续做某事13.what do you think of...?你认为....怎么样？语法点came?短语归纳1.wait for等候2.look for寻觅3.go off (闹铃）发出声音4.XXX洗澡5.pick up接德律风；捡起6.make sure确信；务必7.have fun玩的开心8.fall asleep入眠；睡觉9.die down逐突变弱；逐步消逝10.wake up醒来；叫醒11.in a mess杂乱无章12.take photos照相13.turn on翻开14.in silence缄默沉静地；无声地15.XXX down摧毁；拆卸；记下16.tell XXX说实话17.point out指出18.go XXX消逝19.as well也用法归结1.XXX忙于（做）某事2.XXX看见某人或某物正在做某事3.begin/start to do sth开始做某事4.try to do XXX努力去做某事5.have trouble（in）doing sth做某事有艰巨语法点曩昔举行时过去进行最好记，was/were+doing特定时间有暗示，过去某刻某时段一定主语在句首，普通问句Be提早否定句式更简朴，Be后只把not添Unit 6 An old man tried to move the mountains短语归纳1.work on从事3.XXX...XXX拿走，带走4.a good way to do sth做某事的好办法5.a little bit一点儿6.once upon a time从前7.turn...into..变成8.XXX呈现，出版，结果是9.get married立室10.fall in love with sb爱上某人11.be born出生12.all over the world全球13.make a plan to do sth制订打算做某事14.along the way沿路15.be lost迷路16find out找出17.learn about了解用法归纳1.try to do sth设法做某事2.XXX XXX完成做某事3.continue to do XXX连续做某事4.make sb do XXX让某人做某事5.keep XXX一向做某事6.instead of XXX代替做某事7.be able to do能够做某事9.have no time to do sth没有工夫做某事10.XXX XXX对做某事感乐趣11.can’t stop doing XXX禁不住做某事12.XXX听到或人正在做某事13.XXX引导某人到某处14.XXX把某物遗忘在某地15.XXX向某人展示某物语法点1.unless引导的条件状语从句2.XXX...引导的结果状语从句3.as soon as指导的工夫状语从句Unit7 XXX?短语归纳1.take in吸入；吞入2.in the face of面临（题目；艰巨）3.XXX出身时4.as you can see正如你所看到的5.as far as I know据我所知6.up to直到7.prepare ...for...为...筹办...8.fall over摔倒10.cut down砍倒11.take care of照顾；照看12.or so大约；左右13.in XXX处于危险之中用法归纳4.what’s the+形容词最高级+名词in the world?世界上最....的....是什么？5.XXX..保护....使不受；防备6.XXX胜利做成某事8.send sb to do XXX派某人去做某事1.数词hundred,thousand,million,XXX的用法2.形容词和副词的比较级和最高级用法比较级变革划定规矩比较品级要变革，普通词尾加-er词尾如有哑音e，间接加r就能够一辅重读闭音节，辅音字母要双写辅音字母加y结尾，要把y改i加erUnit8 Have you read Treasure Island yet?短语归纳1.be full of充满2.grow up长大3.XXX up赶快4.XXX带回到某地5.more than超过6.in the middle of在....中央7.fight over为....争吵；争斗8. think about斟酌9.XXX XXX开始意识到10.ever since then从那时起11.a kind of一种12.such as比方13.XXX属于14.find out找出；查出15.at the end of the day在一天竣事的时候16.be famous for因为...而出名17. leave XXX遗忘；留下18.the importance of money and success金钱和成功的重要性用法归结1.XXX XXX完成做某事2.XXX抵达某地3.learn to do sth研究做某事4.XXX看到某人正在做某事6.XXX教或人某事e sth to do用某物做某事8.love to do/doing XXX喜欢做某事9.can’t wait to do sth迫不及待做某事10.be kind to sb对某人友好11.hope to do XXX希望做某事12.have time to do sth有时间做某事13have nothing to do没什么事情可做语法点目前完成时Unit9 Have you ever been to a museum?短语归纳1.have a great time玩的兴奋2.put up搭建；支起3.in such a rapid way用如此快速的方式4.be able to do XXX能够做某事5.a couple of少数；几个6. on the other hand另一方面7.three quarters四分之三8.whether...or...不论...照旧...9.wake up醒来10.all year round一年到头，长年11.close to靠近用法归纳1.a great way to do sth一个做某事的好办法2.watch sb to do sth观看或人做了某事4.XXX do XXX勉励或人做某事5. have problem (in）doing sth做某事很费力6.as...as..和...一样7.the best time to do sth做某事的最好工夫8.choose to do sth选择做某事9.tell sb to do XXX告诉某人做某事语法点现在完成时区分：have been to和have gone toUnit10 I’v had this bike for three years短语归纳1.h0w long多长，多长时间3.welcome to ...欢迎到....4.XXX察看5.at first起初6. no longer不再；不复7..as for ...至于....8..to XXX说实在的9.search for寻找11.according to依据；按照12.in one’XXX...看13.in order to为了用法归结3.have been in+地点在某处待了多久5.hope to do XXX希望做某事7.one of+the +描述词最初级+可数名词复数+V单数最....的...之一是....ed to do XXX过去常常做某事9.need to do sth需求做某事语法点目前完成时1.since和for指导状语的辨别2.延续性动词和瞬间动词瞬间动词转为为延续动词表borrow-XXX-havecatch a cold-have a coldput on-wearget to know-knowget to sleep-XXXgo out-XXX-be(in)die-be XXX-be overfall ill-be illjoin-be in/be a member offall XXX XXX响应的介词close-be close。

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。