现在完成时讲解_初中英语现在完成时的讲解 _生活经验

现在完成时详细讲解超酷的现在完成时语法讲解

现在完成时讲解超酷的现在完成时语法讲解

求英语语法现在完成时讲解，例子，习题（附答案）现在完成时
现在完成时是英文时态的一种
现在完成时的用法
have(has)+过去分词(done)
1.现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在.
I have lost my wallet.(含义是:现在我没有钱花了.)
Jane has laid the table.(含义是:已可以吃饭了.)
Michael has been ill.(含义是:现在仍然很虚弱)
He has returned from abroad. (含义是:现在已在此地)
2. 现在完成时可以用来表示发生在过去某一时刻的,持续到现在的情况,常与for,since连用.
Mary has been ill for three days.
I have lived here since 1998.
3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, lately等:
He has already obtained a scholarship.
I haven't seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet
4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, on several occasion等:
Have you ever been to Beijing
I have never heard Bunny say anything against her.
I have used this pen only three times. It is still good.
George has met that gentleman on several occasions.
5. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, up to present, so far等:
Peter has written six papers so far.
Man has now learned to release energy from the nucleus of the atom.
There has bee too much rain in San Francisco this year.
The friendly relations and cooperation between our two countries have been enhanced in the past few years.
Up to the present everything has been successful.
6. 现在完成时表示现在之前业已完成的动作,虽然其效果或影响仍然存在但已不再继续,但是有一些现在完成时的句子,在后面加上for+一段时间,则现在完成时的动作就表示延续性.
Thomas has studied Russian. (现在不再学俄语)
Thomas has studied Russian for three years. (=Thomas began to study Russian three years ago, and is still studying it now.(同第2点用法第一个例句)
7. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作.
We have had four texts this semester.
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现在完成时的“完成用法”和“未完成用法”
1.现在完成时的"完成用法"
现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束，但该动作对现在产生了影响，与现在情况具有因果关系。
例如：He has turned off the light.他已把灯关了。(动作结束于过去，但说明的是现在的情况--灯现在不亮了。)
现在完成时"完成用法"的特点是动作不延续，因此，该时态只能与表示不定的过去时间状语(如：already ， yet ， before ， recently等)、频度时间状语(如：never ， ever，once等)、包括现在时刻在内的时间状语(如：this morning ／ month ／year... ， today等)连用。
例如： Have you found your pen yet？你已找到你的钢笔了吗？
2.现在完成时的"未完成用法"
现在完成时的"未完成用法"指的是动作开始于过去某一时刻，一直延续到现在，或可能还要继续下去。
例如：He has lived here since 1978.自从1978年以来，他一直住在这儿。(动作起始于1978年，一直住到现在，可能还要继续住下去。)
I have been in the army for more than 5 years.我在部队已经呆了五年多了。(动作开始于5年前，一直延续至今，有可能还要继续下去。)
此种用法的句中常需一个表示一段时间的状语(由since或for引导)，或表示与现在时刻相连的时间状语(如：up to now，so far)等。
例如：I have heard nothing from him up to now.到目前为止我没有他的任何消息。
注意：(1)现在完成时的未完成用法只适用于延续性动词，不可用于终止性动词，即瞬间完成或延续时间很短的动词。如：come，go，arrive，leave，join，become，die等。
(2)现在完成时常见两种句型：
①主语＋have / has been＋for短语
②It is＋一段时间＋ since从句
例如：He has been in the League for three years.或It is three years since he joined the League. 他入团已三年了
一.have/has been doing sth.
1.现在完成进行时
当后面接有一段时间的词时,或是加表示时间的词时,可以用现在完成时.如果这件事现在还在持续或还在做,则可用
现在完成进行时.
如:I have been skating for 4 hours.
I have finished my homework.
2.现在完成时的被动语态.
后接动词的过去分词.
如:The building has been built for 5 years.
二.一般现在时:用动词原形
一般过去时:用动词的过去式
一般将来时:will/shall+do
is/am/are going to do
过去将来时:could/would do
现在完成时:have/has done
过去完成时:had done
将来完成时:shall have done
过去将来完成时:would/could have done
现在进行时:is/am/are doing
过去进行时:was/were doing
将来进行时:will/shall be doing
过去将来进行时:would/could be doing
现在完成进行时:have/has been doing
过去完成进行时:had been doing
将来完成进行时:shall have been doing
过去将来完成进行时:would have been doing
现在完成时和一般过去时的区别讲解
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一般过去时和现在完成时的比较语法是语言的规律，是语言的骨骼，是触摸语言的本质，它向人们提供词形变化及组词成句的规则。我们在语言交际中无时不受语法规则的支配。在英语学习过程中，同学们常常将一般过去时与现在完成时混淆在一起。现将二者的用法做一比较。一般过去时描述的是过去的动作或状态，是对过去发生过的事情进行纯描述。常见的用于一般过去时态中的典型时间状语有lastweek，yesterday，threedaysago，in2007，inthosedays等。例如：Lindasuddenlyfellillyesterday.琳达昨天突然病了。Theygotmarriedlastyear.他们是去年结婚的。若未出现时间状语，那么我们就须了解它的暗含内容是什么。如：Iwasastudent.此句暗含Iamnotastudentnow.HeworkedinLanzhou.言外之意则是HeisnotworkinginLanzhounow.一般过去时的本质特征就是会使人产生一种距离感。请看例句：A1：Iamateacher.我是老师。A2：Iwasateacher.我曾经当过老师。（现在的身份已不再是老师。）很显然，这组句子在时间上（现在还是过去）使人产生了一种距离感。请看第二组例句：B1：CanIuseyourMP3？我可以借用你的MP3吗？B2：CouldIuseyourMP3？我可以借用你的MP3吗？当我们请求朋友、熟人的允许时，常用CanI… ，显得更直接，更随意；而当我们请求不太熟悉的人或长辈、上级的允许时，常用CouldI…，使语气听起来更委婉、客气。那么自然地这组句子体现出情感上的亲疏，即交谈双方在情感上产生了一种距离感。再看下例：C：I
急求现在完成时的讲解，练习（附答案）?。。。。?/h3>Grammar 现在完成时
现在完成时用来表示之前已发生或完成的动作或状态，但它的影响现在还存在；也可表示持续到现在的动作或状态。其构成： have (has) +过去分词。规则变化的过去分词与过去式的变化一样，在动词词尾加ed; 不规则变化的过去分词见不规则动词表，需要同学记忆。
现以see the film为例将现在完成时的肯定句，否定句和疑问句列表如下：
肯定句：I/You/We/They have seen the film.He/She /It has seen the film.
否定句：I/You/We/They have not/ haven’t seen the film.
He/ She/It has not/hasn’t seen the film.
疑问句：Have I/you/they seen the film? Yes, you/ we/I/they have. No, you/ we/I/they haven’t.
Has he/she/it seen the film? Yes, he/ she/ it has. No, he/ she/ it hasn’t.
二、用法：现在完成时既涉及过去，又联系现在。用法一：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。常与just（刚刚），already（已经），never（从来没有），ever（曾经），before（以前），yet（仍然），once（一次）， twice（两次），many times（很多次），how many times（多少次）， so far（迄今为止），during the past（last）three years（最近三年来）等连用。
※副词的位置：①just常用于肯定句中，放在have / has后，He has just come .
②never表示否定, 放在have / has后, He has never visited the Great Wall.
③ever用于疑问句中,句型为: Have / Has＋主语＋ever ＋过去分词？“…曾经……过吗？”用于询问某人过去的经历。Have you ever been to the farm？
④before用于句末，The woman has never heard of that before.
⑤yet 用于句末或not 之后.Has the train arrived yet? No, not yet.
⑥already用于肯定句, have / has 之后或句末.We have already finished it.
⑦so far用于句首或句末. So far, we have visited the moon.
用法二：表示过去已经开始，一直延续到现在的动作或状态。时间状语有：
①for＋表示一段时间的词语I have taught English for 19 years 。
②since＋表示过去时间点的词语He has been at this school since 1986.
③since＋表示过去的时间状语从句I have lived here since I was born.
④since＋一段时间＋ago. I have known him since 20 years ago.
三、现在完成时态中可以和表示一段时间状语（for，since，how long, all one’s life）连用的动词必须是表示延续的情况或动作的动词，即延续性动词。如：be，have ， know，live ， work，study，learn ， teach，keep，speak，talk，draw，wait，wear ， walk，sleep，drive，write ， do，clean等。
I have been a teacher for nearly 20 years. How long has he lived here?
四、延续性动词的现在完成时可和包括“现在”在内的（到说话时仍未结束）表示一段时间的状语连用。如this morning，today，this week，these days
He has been to Beijing three times this year. He has written two letters this morning.（说话时间在上午）He wrote two letters this morning.（说话时间在下午或晚上）
五、英语中还有一些动词的意义决定它们所表示的动作不能延续,只是一瞬间
就结束的动作,这类动词叫做“非延续性动词” ，常见的有：come，go，arrive ， reach，see，hear ， close，open，leave，begin，start，lose，buy，fall ， join ， die，get up，become ， borrow，lend，find ， finish，receive等。这些动词可用于现在完成时，说明某个动作的结果还存在，但不能和表示一段时间的状语（how long，for，since）连用。He has come back.（√）He has come back for two hours.（×）
※但在否定句中，非延续性动词也可用表示一段时间的状语来修饰，如
I haven’t heard from my father for a long time. We haven’t seen him since 1999.
六、当终止性动词（非延续性动词）与表示一段时间的状语（how long，since，for，all one’s life）相矛盾时,改正错句的方法有如下几种:
（1）用副词ago把现在完成时的句子改为一般过去时.
He has come back for two weeks.（错）改为:He came back two weeks ago.（正）
I have lost my bike for ten days. （错）改为:I lost my bike ten days ago. （正）
（2）用“It is / has been＋时间＋since＋一般过去时态”句型来改写。
He has joined the League for 3 years. （错）It is 3 years since he joined the League.
I have bought the book for 5 days. （错）It is 5 days since I bought the book. （正）
He has died for 20 years. （错）It is 20 years since he died. （正）
（3）用“时间＋has passed＋since＋一般过去时态”句型来改写。
He has left home for 20 years. 改为:Twenty years has passed since he left home.
He has lost his pen for 2 days. 改为:Two days has passed since he lost his pen.
（4）用系表结构来改写.
He has died for 20 years. 改为: He has been dead for 20 years.
The factory has opened since 1999. 改为:The factory has been open since 1999.
How long has he left? 改为:How long has he been away?
（5）用相应的延续性动词替代非延续性动词。
He has bought the book for two weeks. 改为:He has had the book for two weeks.
常见的相应转换形式如下:
borrow / lend→keep, buy→have, finish / end→be over, arrive /come / go / move / reach /get to→be in /at / be here /be there, begin / start→be on , open→be open , close→be closed, die→be dead , leave→be away（from）,go to school→be in school / be a student, get up→be up, fall asleep→be asleep , fall ill→be ill, get to know→know, lose→be lost, become→be, return / come back / get back→be back, join→be in / be a…member, join the army→be in the army /be a soldier, receive / get a letter→have a letter , catch / get a cold→have a cold, begin to study→study,
他参军已有三年.He has joined the army for three years.（错）改为:
He has been in the army for three years / since three years ago.
He has been a soldier for three years / since three years ago.
He joined the army three years ago.
It is three years since he joined the army.
Three years has passed since he joined the army.
（1）He came to our village two years ago.=Heour village since two years ago.
（2）He left home three days ago=Hehome for 3 days.
（3）I bought the watch 2 weeks ago=Ithe watch since 2 weeks ago.
（4）It is 5 days since I borrowed the book=Ithe book for 5 days.
（5）The film has begun= The filmfor half an hour.
（6）I got to know him 10 years ago=Ihim for 10 years.
（7）There is a factory=Therea factory for 20 years.
（8）Our school opened in 1960=Our schoolsince 1960.
七、现在完成时中应注意的几个问题
1. have been to 和have gone to的区别
have been to 强调“去过” ，现已不在那里，如：
He has been to the USA three times.
他到美国去过三次。（过去“到美国”，现在已“不在美国”）
have gone to主要强调的是“去了”，现在人不在说话的现?。?如：
--Where's your mother? --你妈妈在哪？
--She has gone to the hospital. --她去医院了。
2. have been to 和have been in的区别
have been to强调人“已回到原地”，后面可接表示“次数”的状语。
eg. ① She has been to Shanghai only once.
②--How many times has he been there? --He's been there many times.
have been in表示某人“已在某地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。
eg. ①They have been at the bus stop for half an hour.他们在车站呆了半小时。（现在仍然在车站）
②We have been in Xi'an for two weeks.
我们在西安呆了两个多星期。（现仍在西安）
③How long have they been in China?
他们在中国呆了多长时间了？（仍在中国）
八、如何通过与一般过去时做比较,进一步掌握现在完成时?
一般过去时和现在完成时的动作都发生在过去,但意义却不同.
（1）一般过去时只表示过去的动作或状态,和现在不发生关系。
现在完成时表示过去发生的某一动作对现在造成的影响,强调的是现在。
如:I learned ten English songs（说明过去学过,现在是否记得,不是本句的内容）
I have learnt ten English songs.（learn发生在过去,但强调我现在懂英语歌曲）
I cleaned the blackboard half an hour ago.（只说明“擦”和其发生的时间）
I have cleaned the blackboard.（说明现在黑板是干净的）
The teacher has written some new words on the blackboard（黑板上现在有单词）
The teacher wrote some new words on the blackboard（黑板上现在没有单词）
（2）一般过去时可以和表示过去的时间状语连用,如:yesterday, last year, three days ago, just now, 等。现在完成时不能和表示过去的时间状语连用,其时间状语可以是since…,for… , just, ever, never, before, already, yet , so far, all one’s life等
八、规则动词的过去分词和它的过去式相同,即在原形后加－ed（－d）。已学近80个不规则动词的过去分词约有半数也和它的过去式相同,分类如下,利于记忆:
1)原形中的元音字母有变化:
get-got-got,sit –sat-sat win-won-won spit- spat- spatshine –shone- shone
find- found- found hold-held-held meet- met-metstand- stood-stood
understand-understood-understood feed- fed-fedhang-hung-hung
2)原形中的辅音字母有变化:
make-made-madespill-spilt-spilthave/ has-had-had build-built-built
send-sent-sentlend- lent- lentspend-spent-spent
3)在原形后加t或d:
spoil-spoilt-spoilt learn-learnt-learnt mean-meant-meanthear-heard-heard
pay-paid-paidsay-said-said lose-lost-lost lay-laid-laid
4)原形中的元音字母和辅音字母都有变化:
feel-felt-feltsmell-smelt-smeltspell-spelt –spelt keep-kept-kept
sleep-slept-sleptsweep-swept-swept leave-left-left sell-sold-sold
tell-told-told catch-caught-caught teach-taught-taught buy-bought-bought
bring-brought-brought think-thought-thoughtwear-wore-worn
5)与原形相同:
hit-hit-hit hurt-hurt-hurtlet-let-letput-put-putread-read-read
set-set-set shut-shut shut cost-cost-costcut-cut-cut
还有些不规则动词的过去分词与过去式不相同,为便于记忆,也分类如下:
1)原形中的元音字母有变化:
ring-rang-rungsing-sang-sungdrink-drank-drunk swim-swam-swum
begin-began-begun sink-sank-sunk
2) 在原形上加－en:
eat-ate-eaten fall-fell-fallen ride-rode-ridden write-wrote- written
be-was/were-been rise-rose-risen forget-forgot-forgotten
3)在原形上加－n:
see-saw-seengive-gave-given drive-drove-driven take-took-taken
mistake-mistook-mistaken draw-drew-drawn blow-blew-blown
grow-grew-grown know-knew-known show-showed-shown throw-threw-thrown
4)在过去式上加－n:
steal-stole-stolen break-broken–broken choose-chose-chosen speak-spoke-spokenwake-woke-woken
6)与原行相同:come-came-come run-ran-run become-became-become
7)原形、过去式和过去分词都不相同的:
do-did-done go-went-gone fly-flew-flown lie-lay-lain
个别动词有两个过去式和过去分词,一个为规则变化,另一个为不规则变化:
learn-learned-learnedshined-shinedsmell – smelled-smelled
learnt-learntshine shone-shonesmelt-smelt
wake -waked-wakedspelled-spelled
woke-wokenspell -spelt –spelt
【典型例题】
1. — Oh, Mrs. King, your necklace looks nice. Is it new?
— No, I ____ it for two years.
A. hadB. have hadC. boughtD. have bought
2. His grandfather _____ for over two years.
A. has diedB. has been deadC. has deadD. died
3.Uncle Li can speak English very well because he _____ England for 5 years.
A. has gone toB. has been toC. has come toD. has been in
4. — Where is Mr. Zhang? — He _____ London.
A. has been toB. has beenC. has goneD. has gone to
5. — _____ to the United States? — No, never, but I went to Canada a few years ago.
A. Have you beenB. Have you goneC. Did you goD. Will you go
6. I haven’t seen you _____ last Friday.
A. forB. sinceC. fromD. on
7. — John, you ____ the computer game for two hours. It’s bad for your eyes. Stop, please!
— OK, Mum.
A. playedB. have playedC. were playingD. play
8.I won’t go to the concert because I _____ my ticket.
A. lostB. don’t loseC. have lostD. will lost
Exercise: Fill in the blanks with the right verb tense:
1. It（rain）for a week.
2. I don’t know this woman. I（meet, never）her.
3.－Let’s go to the cinema.－No, I（see, already）the film.
4. We（finish, not）our homework yet. Will you wait a minute?
5. John（come, not）yet. He will be back in a minute.
6. Mr. Green often goes to America. In fact, he（be）there ten times.
7. －Where’s John? －Hejust（go）to the teachers’ office.
8. She（study）English since she was ten. She（begin）to study English when she was ten.
9. Jim isn’t here. He（go）to the library. He（go）there an hour ago.
10. He（travel, never）on a train in her life.
11. I（buy）the bike two weeks ago. I（have）this bike since the beginning of this month. I（have）it for two weeks.
12. Great changes（take place）in those villages in the last ten years, Great changes（take place, also）in my home－town in the last ten years.
13. How many timesyou（phone）me these days?you（phone）me this morning?
14. Tom can’t get into the room because he（lost）the key to the door.
15. I（look）for the dictionary, but I（find not）it yet.
16. －the new programmes（start）yet?－No, they（plan,still）
18. We（live）in Shanghai from 1989 to 1999. We（live）for 10 years.
19. They can’t go with us. They（finish, not）the work yet.
20. You（change, not ）your mind, haven’t you?
21.We must pay for the library book if we（lost）it.
22. He has already finished his homework.（改为否定句）
Hefinished his homework.
23.－ I hear your father（be）to Japan once.－Yes. He（go）there last year.
24. －Whenyou（buy）the book?－I（have）it for two weeks.
25. Such a thing（happen, never）in the village before.
现在完成时态1have / has +done,请注意与一般过去式的区别
I have already worked out this math problem? (改为否定句)
Iworked out the math problem.
He has already finished the book.(改一般疑问句并做肯定否定回答)
hethe book? Yes, he. No, he.
I have a book.. (改一般疑问句并做肯定和否定回答)
youa book?Yes, I. No, I.
I have got a book. (改一般疑问句并做肯定和否定回答)
youa book?Yes, I. No, I.
He has got a book. (改一般疑问句并做肯定和否定回答)
hea book? yes, he.No, he.
You have done your homework,you ?(改为反意疑问句)
He has never been abroad,he? (改为反意疑问句)
We have got little milk,we? (改为反意疑问句)
Jim has got a pen. Lucy has got a pen too.(改为同义句)Jim has got a pen,Lucy.
I think younever(hear) such a thing.
you(know) where your sister has(go)?
I think you(be) all right soon.
If you(lose) a book, you(pay ) for it.
I(tell) you about the accident as soon as I(finish) the work.
you( read) the book yet?
Tomjust(find) his cat.
He(not see) the film yet. So hesee) it this evening.
I(have) my lunch already.
You(find) your lost book? Yes, I(find) it hours ago.
You needn’t tell him about it. Ialreadyhim about it.(tell)
--Have you ever(be) to Tibet? --Yes, I.--whenyouthere?(go) --Three weeks ago.
--Jim,you(write) a letter to your aunt? --yes,I.
I(write) it just now.
Have you(return) the ladder yet? No, not.I(return) it soon.
I(有) the book Harry Potter.
So far, I(not get) a letter from him.
Until now, shealready(write) three books.
In the past few years, we(build) a lot of buildings.
In two or three years, the city(become) the most beautiful one in China.
This is the first time I(visit) the Great Wall.
Wealready(know)each other before.
We(get)to know each other three years ago.
Theyjust(get) in touch with each other.
They(get) in touch with each other just now.
I am sorry. I(forget) your name.
I am sorry I(forget) to bring you photos.
--How many timesyou everto Shanghai?
---Ieverthere three times.(去过)
--Where is Jim?--Heto the teachers’ office(去了)
33. --youto the hospial yet? .(去过)
--yes, I(go)to see Doctor Li this morning and he(give)me some medicine.
--you(take) it.? -- yes, Iit just a moment ago.(take)
She has worked in the school for three years. (改为同义句)
She hasthe schoolthree years..
I borrowed the book three days.(39和40为同义句)
I(借) the book for three days
She(learn) English for three years.
She(learn) Englishthree years.(用since)
She(learn) English since2002.
Last year he often(run) for two hours a day. Until now hefor two years.(run)
He(live) here since he(move) here.
Our maths teacher(talk) to a boy when I(enter) the room
The Greens(be) to the Great Wall twice.
I(give) the message to her as soon as he(come) back.
There(be) no books on the shelf a moment ago.
Look, the Greens(have) supper. But wejust(eat) it.
In one or two years, she(become) a doctor.
He died two years ago.(改为同义句) Hefor two years.
I bought the pen three hours ago.(改为同义句)
I(有)the pen for three hours.
I joined the army three years ago. (改为同义句)
Ia member of the armythree years.
Ithe army for three years.
Itthree yearshethe army.
知识讲解现在完成时和过去完成时有什么区别（北现在完成时
构成：have /has +done/been done
用法：1动作发生在过去对现在的影响
eg:The possibility has been dismissed that he has liver failure.
2 动作开始于过去，一直持续到现在
eg:How long have you lived here?
3在时间条件壮语从句中，用现在完成时替代将来完成时
eg:When you have finished the magazine,please lend it to me.
常用时间状语：1表示到现在为止：already ,yet ,just ,ever, never ,before ,since ,so far, until now ,by now ,up to now.
2表示最近：recentl,lately in the past/last few years
3包含现在在内的时间状语：this morning/afternoon,all theyear ,all day
过去完成时
构成：had + done/been done
1. 由时间状语来判定
与过去完成时连用的时间状语有：
（ 1 ） by + 过去的时间点。如：I had finished reading the novel by nine o'clock last night.
（ 2 ） by the end of + 过去的时间点。如：We had learned over two thousand English words by the end of last term.
（ 3 ） before + 过去的时间点。如：They had planted six hundred trees before last Wednesday
2. 由“过去的过去”来判定。过去完成时表示“过去的过去”，是指过去某一动作之前已经发生或完成的动作，即动作有先后关系，动作在前的用过去完成时，在后的用一般过去时。这种用法常出现在：
（ 1 ）宾语从句中当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如：She said that she had seen the film before.
（ 2 ）状语从句中在时间、条件、原因、方式等状语从句中，主、从句的动作发生有先后关系，动作在前的，要用过去完成时，动作在后的要用一般过去时。如：After he had finished his homework, he went to bed.注意： before, after 引导的时间状语从句中，由于 before 和 after 本身已表达了动作的先后关系，若主、从句表示的动作紧密相连，则主、从句都用一般过去时。如：After he closed the door, he left the classroom.
（3）表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示"原本… ，未能…"We had hoped that you would come, but you didn't.
过去完成时与现在完成时的区别
现在完成时表示的动作发生在过去，以现在的时间为基点，但侧重对现在产生的结果或造成的影响，与现在有关，其结构为“助动词 have (has) + 过去分词”；过去完成时则是一个相对的时态，以过去时间为基点，它所表示的动作不仅发生在过去，更强调“过去的过去”，只有和过去某时或某动作相比较时，才用到它。比较：I have learned 1000 English words so far.到目前为止我已经学会了 1000 个英语单词。I had learned 1000 English words till then.到那时为止我已经学会了 1000 个英语单词。— I'm sorry to keep you waiting. 对不起，让你久等了。— Oh, not at all. I have been here only a few minutes.没什么，我只等了几分钟。（“等”的动作从过去某一时间点持续到现在）
初中英语现在完成时的讲解现在完成时结构：
have+过去分词
He has been to Beijing.
这句话中be to表示去过…… 的意思，所以have+过去分词，be→been
现在完成时被动语态结构：
have+been+过去分词
而被动语态结构：be+过去分词,完成时中be 变成了been
He has been taught English for five years
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那和其他时态的区别呢？这是初二的英语，在此之前他们学了现在进行时，过去进行时，过去将来时，现在完成进行时，在此基础上，我应该怎么讲呢？

补充
【现在完成时讲解_初中英语现在完成时的讲解】现在进行时：be动词+动词ing形式，如：i am speaking 我正在说话
过去进行时：be动词的过去式+动词ing形式，如：i was speaking at that moment 那一刻我正在说话
过去将来时：would+be/动词，如，i would be there if i knew 如果我知道我将去那
现在完成进行时：have+been+动词ing，如：i have been waiting here all the time我一直在这等着

要哦亲偶一个字一个字打上去的嘿嘿