人教版初中教育英语现在完成时讲解
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人教版英语英语现在完成时知识点(大全)含答案解析一、初中英语现在完成时1.—I'm sorry for being late.—Never mind. The meeting ______for only 5 minutes. This way, please.A. has begunB. has endedC. has been on【答案】 C【解析】【分析】句意:——对不起,我迟到了。
——没关系.会议只开了5分钟,请这边走。
for+段时间,通常用于现在完成时态,结构是have/has+动词的过去分词,begin和end都是短暂性动词,不能用于现在完成时态中表示动作或状态的延续,因此A,B不正确.has been on"在进行,开着(的状态)",故选C【点评】现在完成时表示延续性的状态。
2.—What great progress Huawei ________ in recent years!—No wonder it is widely known in all parts of the world.A. is makingB. has madeC. makesD. made【答案】 B【解析】【分析】句意:——华为近几年取得了多大的进步啊!——难怪它在世界的每个角落都出名。
根据时间状语in recent years,近几年,可知动作从过去持续到现在,时态为现在完成时have/has+过去分词,故选B。
【点评】考查现在完成时。
注意掌握现在完成时的结构have/has+过去分词。
3.So far, the AIIB(亚投行)_____ 57 countries to be the founding members.A. attractedB. has attractedC. will attract【答案】 B【解析】【分析】句意:到目前为止,亚投行吸引了57个国家成为发起国。
现在完成时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have(has)表明事情发生于现在。
它和主语的人称、数要保持一致。
过去分词在句子中做谓语,说明句子的含义。
2.用法(1)动作发生在过去某个不确定的时间,但对现在有某种影响和结果。
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)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。
如:I have been to Beijing twice.我去过北京二次。
3.现在完成时的时间状语(1)现在完成时属于现在时范围,故不能和过去的时间状语连用。
如:yesterday,last Sunday,in1990,three years ago等。
但是,在强调动作产生的后果和影响时,可以和一些表示不确定的时间状语连用。
a. 用副词already和yet。
already一般用于肯定句中,yet一般用于否定句和疑问句中。
如:We have already finished our homework.我们已完成作业了。
They haven't finished their homework yet.他们还没有完成作业。
b.用ever 和never。
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。
现在完成时(I)第八单元语法知识等词连用.常用于肯定句或疑问句(均表示:已经).(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137页)1.肯定句:主语+have/has+过去分词+其他+时间.eg: I have already lost the key.我已经弄丢了钥匙.(我现在没有钥匙)Hehas everread that book .他曾经看过这本书. (了解书的内容)Theyhave just cleaned their hands.他们刚刚洗过手了. (手是干净的) 2.否定句:主语+haven’t/ hasn’t+过去分词+其他+时间.eg: I haven’tlost the key yet.Hehasn’t ever read that book .Theyhaven’t just cleanedtheir hands.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.eg:Have you already lost the key? Yes, I have. No, I haven’t.Has he ever read the book? Yes, he has. No, he hasn’t.Have they just cleaned their hands? Yes, they have. No, they haven’t.4.特殊疑问句:特殊疑问词+have/has+主语+过去分词+其他+时间?eg: What have you alreadydone?(done是do/does的过去分词)What has he ever done?What have they just done?定义:(2)现在完成时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解释:一直在学,持续了五年,并且还可能持续学下去.He has lived in Beijing since he was born . (自从他出生以后就居住在北京)解释:从出生后就一直住在北京,持续到现在,还有可能一直住下去)Have you stayed here since3 o’clock?(自从3点后你就一直呆在这儿吗?)例题:选用for和since填空:1.We haven’t seen each other ___ a long time.2.His father has been in the factory ____ 10 years ago.3.The film has been on ____ 20 minutes.4.Mr. Green has worked here _____ he came to China.5.His grandparents have been dead _____ several years.6. It’s five years ______ we met last time.7.I have already had dinner. (否定)I _______ _______ dinner _______.8. Mum has cooked the dinner.Mum _______ ________ the dinner.9. Susan has learned English at school. Susan________________English at school.10.I have already had dinner. (提问)_______ _______ ________ _________ _______?11. He has just finished his homework. _______ _______ _______ ________ ________?12. Susan has learned English at school. _______ _______ ________ ________ _______?过去的时间状语连用.eg: I have already seen the film. (现在完成时,已经看了这部电影,并且知道电影的内容)I saw the film last week. (一般过去式,因为后面有表示过去的时间状语last week)He has lived here since 1993. (现在完成时,后面有since引导的时间状语从句)He lived here in 1993. (一般过去时,1993年住在这儿,现在没住在这儿了)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.肯定回答:Yes, 主语+ have/has. 否定回答:主语+haven’t/ hasn’t.eg: Have you been to Australia? Yes, I have. No. I haven’t.Have they been toBeijing? Yes, they have. No, they haven’t.Has he been toSouth Africa? Yes, he has. No, he hasn’t.(4)特殊疑问句:特殊疑问词+have/has+ 主语+ been?eg:Where have you been?Where have they been?Where has he 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:eg: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. He left five minutes ago.4.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.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。
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。