现在完成时的用法
编辑： admin 2018-06-09
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概括：这道题是仇战娜同学的课后英语练习题，主要是关于现在完成时的用法，指导老师为魏老师。现在完成时是"过去的动作或状态持续到现在并且已经完成"。在英语时态中，"时"指动作发生的时间，"态"指动作的样子和状态。 它的构成是:主语+have或has +动词的过去分词。(have/has done).
题目：现在完成时的用法
解：现在完成时是由助动词“have(has)+过去分词”构成的,其规则动词的过去分词构成与过去式相同,不规则动词的过去分词则需要加强记忆.现将其主要用法小结如下:
1.表示过去发生的某一动作对现在造成的影响或结果.例如:
I have just cleaned my clothes. 我刚洗过衣服.
("洗衣服"是发生在过去的动作,对现在造成的结果是"衣服干净了")
2.表示过去已经开始,持续到现在的动作或状态,也可以表示实质可能继续下去的动作或状态.这时往往与表示一段的时间状语连用.例如:
I have been here for just over two years. ?我到这里才两年多.
He has worked here since 1989. ?从1989年, 他就在这里工作.
3.现在完成时属于现在时态范围,因此,不能和表示过去的时间状语连用.
如:yesterday, last night, two weeks ago等, 但可以和never, ever, already, yet, just, for…, since …等连用. 例如:
Have you finished your work yet? 你已经完成你的工作了吗?
I have never heard that before. ?过去,我从未听说过那件事.
4.be的现在完成时态.
1) 表示一种状态,表示从过去已经开始持续到现在,要与表示一段的时间状语连用. 例如:
There has been a factory near No. 14 Middle School for several years.
十四中学附近有家工厂,已经有几年了.
2) 表示某人刚从某地回来.例如:
Where have you been? I have been to the library.? 你到哪里去了? 我到图书馆去了.
3)后加地点,表示某人曾经到过某地. 例如:
Have you ever been to West Hill Farm? ?你曾经到过西山农场吗?
但是"have(has) gone to+地点"则表示已去了某地,不在说话者所在的地方.例如:
Where is Kate She has gone to Beijing with her father.? 凯特在哪里 她和她父亲一起去北京了.
5.瞬间动词的现在完成时.
瞬间动词也叫短暂性动词或终止性动词.这种动词是指它们动作很短暂,开始也就意味着结束,它们不能表示延续的意义.这些词可以用于现在完成时,但只能表示过去的事对现在的结果或影响,而不能表示延续性的事情,就是说不能跟表示一段的时间状语连用,但可以用其它方式来表示（可在中文中却不管是否延续,都可以用同一个词来说,比如说“已经买了”和“买了两周了”,都用了“买”,英语就不行了）.象这样的词有:buy, sell, begin, start, leave, come, go, borrow, lend, return, die, join等. 例如:
火车离开半小时了.
误:The train has left for half an hour.
正:The train has been away for half an hour.
正:The train left half an hour ago.
正:It has been half an hour since the train left.
正:It is half an hour since the train left.
但是,其完成时的否定式可与表示一段的时间状语连用,表示一种状态.例如:
I haven't received a letter from my father for two months.
我已两个月没有收到我爸爸的信了.
He hasn't come here for a week.
他一个星期没有来这里了.
现在完成时要点剖析
一、现在完成时与一般过去时的用法比较
现在完成时表示过去的动作一直延续到现在甚至会继续下去或表示过去的动作对现在造成的影响;一般过去时表示动作发生的时间在过去.试比较:
The plane has arrived . 飞机已经来了.(说明现在的情况:飞机在这儿)
The plane arrived a quarter ago. 飞机是一刻钟以前来的.(强调动作发生的时间在过去)
I have taught here for fifteen years. 我在这儿已经教了十五年.(表示十五年前的动作一直延续到现在,还可能会继续.)
二、短暂性动词与时间段的关系
短暂性动词在肯定句,疑问句中不能与时间段连用,这些动词是:become, begin, buy, borrow, arrive, come, die, fall, finish, get to know, go, join, leave, marry等.为了表述这种意思,我们常用相应的延续性动词have,keep等或短语"be+名词(形容词,位置副词,介词短语)"来代替短暂性动词, 如:become →be, begin→have 或 be on, borrow→keep, buy→have, come(go, arrive, get) →be here/there/in…,die→be dead, fall asleep(ill) →be asleep(ill), finish→be over, get to know→know, join→be in …(be a member of … ),
leave→ be away (from…), marry →be married等;也可以仍用原短暂性动词,用句型"It is … since从句(从句中用一般过去时)"或用"一般过去时+ …ago"这一结构来表述延续性的动作或状态. 如:
他入党五年了.
He has been in the Party for five years.
He has been a Party member for five years.
It is five years since he joined the Party.
He joined the Party five years ago .
电影开始五分钟了.
The film has been on for five minutes.
It is five minutes since the film began
The film began five minutes ago.
但在否定句中,短暂性动词可以与时间段连用.如:
I haven't bought the bike for a year. 我买这辆自行车还不到一年.
She hasn't come here for an hour.
她来这儿还没有一个小时.
三、have been in 与have been to 的用法比较
1."have been +in+地点名词"或"have been + 位置副词"的意思是"在某地呆过久",如:Mr. Green has been in China for many years. 格林先生在中国呆过好多年.
I have been here since I began to work. ?我工作以来一直呆在这儿.
2."have been + to +地点名词"意思是"曾经到 过某地(多少次)". 如:
Miss Brown has been to Japan twice. ?布朗小姐到日本去过两次.
Have you ever been here before ?你以前到过这吗
四、just, lately, recently是完成时的时间状语,just now 有a moment ago 之意,是一般过去时的时间状语.如:
The train has just arrived. ?火车刚到.
Did you see Joan just now? 你刚才看到琼了吗?
Have you heard from your family lately/recently? 你最近收到家人的来信了吗
五,in the past few years 意思是"过去几年来",可作现在完成时的时间状语;in the past意思是"在过去",常作一般过去时的时间状语. 如:
Great changes have taken place in my hometown in the past few years.
过去几年来,我的家乡发生了很大的变化.
Where did you work in the past? 你过去在哪里工作
六、even since then与from then on (after that)都有"打那以后"之意,前者是完成时的时间状语,后者常用作一般过去时的时间状语,如:
She's lived here ever since then. ?打那以后,她一直住在这.
I didn't hear of Jim from then on/after that. ?打那以后,我就没有吉姆的消息.
七、before泛指"以前"时,可用于现在完成时中;ago表示"现在的一段时间以前",是一般过去时的时间状语.如:
I've never been to Japan before. ?我以前没去过日本.
She went to Japan a year ago. ?她一年前去了日本.
八、ever和never也是现在完成时常见的时间状语.前者意思是"曾经",多见于疑问句或否定句中;后者意思是"从来没有",表示全部否定.如:
"Have you ever seen the film " "No. I have never seen it."
"你曾经看过这部影片吗 " "没有, 从来没看过."
Nobody in our class has ever been there. ?我们班没有人去过那.
九、so far(到目前为止), these days(这些天) 也是现在完成时常见的时间状语.如:
So far, no man has travelled farther than the moon. 到目前为止, 还没有人到月球以外旅行.
举一反三
例1： 【现在完成时的用法和题目】[英语练习题]
思路提示：
顾名思义,就是现在已经完成了的动作：His homework all have been finished=He has finished his whole homework.
既然是现在才完成,则一定是从过去就开始进行的,因此也常用来表示过去就已经完成的事,但与现在存在某种关系时：He has ever lived in China.(注意他现在已经不在中国住了)；但是注意这种用法,即该动作从过去开始,到现在可能仍在继续：He has worked as a teacher for a long time.可能现在已跳槽了,也可能还在当老师.这也是与过去一般时的本质区别哦.
最后,注意 be 在此时态下的不同用法,可为实义动词即 have been ,也可为表被动的助动词即 Have been done ,要小心区分啥.It's known he has been punished for something.It's known he has been well there,
例2： 【现在完成时的定义和用法】
思路提示：
现在完成时
例3： 【英语中现在完成时的用法,】[英语练习题]
思路提示：
现在完成时（Present perfect）过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在的动作或状态.
句型
基本结构：主语+have/has+动词的过去分词(p.p) e.g done ①肯定句：主语+have/has+动词的过去分词(p.p)+宾语. ②否定句：主语+have/has+not+动词的过去分词(p.p)+宾语. ③一般疑问句：Have/Has+主语+动词的过去分词(p.p)+宾语. ④特殊疑问句：特殊疑问词或词组+一般疑问句（have/has+主语+过去分词+其他） 定义： （1） 强调动作是过去发生的 （2） 强调对现在的影响或结果,此用法容易和一般过去时混淆.两者的区别是：一般过去时有动作发生的时间点,即过去某一时间发生某一动作；现在完成时则没有,即不强调是那个时间点发生的动作,而强调过去的动作对现在造成的影响和结果. （3） 在过去不确定的时间里发生的动作,但是结果对现在有影响. 但过去分词一定要选择准确.
编辑本段过去分词
AAA式的过去分词： 现在完成时
注：图中不全.尚包括let-let-let, read-read-read等.
编辑本段规则动词
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： 现在完成时态-中小学教育资料
(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--dropped
编辑本段不规则动词
2 、不规则动词： AAA型 原型 过去式 过去分词 burst burst burst cast cast cast cost cost cost cut cut cut hit hit hit hurt hurt hurt put put put set set set shut shut shut spread spread spread let let let read read read led led led AAB型 beat beat beaten ABA型 become became become run ran run come came come 特殊情况 read read read (read原形发音为/ri:d/,过去式和过去分词发音为/red/) ABB型 bring brought brought buy bought bought build built built burn burnt burnt catch caught caught dig dug dug feel felt felt fight fought fought find found found feed fed fed get got got hang hung hung hear heard heard hold held held keep kept kept lay laid laid lead led led lose lost lost leave left left lend lent lent make made made mean meant meant meet met met pay paid paid sell sold sold shoot shot shot say said said sit sat sat stand stood stood shine shone shone sweep swept swept sleep slept slept teach taught taught tell told told think thought thought win won won ABC型 begin began begun blow blew blown break broke broken choose chose chosen draw drew drawn drive drove driven drink drank drunk fly flew flown forgive forgave forgiven forget forgot forgotten freeze froze frozen give gave given grow grew grown know knew known ride rode ridden rise rose risen ring rang rung shake shook shaken sing sang sung sink sank sunk swim swam swum throw threw thrown write wrote written take took taken wear wore worn see saw seen 用法 （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,也就是说,动作发生在过去,而对现在造成的影响和结果. I have spent all of my money.(现在我没有钱花了.) Jane has laid the table.(现在桌子已经摆好了.) Michael has been ill.(现在仍然很虚弱) He has returned from abroad. (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 为…时间 ②since+过去一个时间点（译为：自从……以来） ③since+时段+ago ④since+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. ●注：瞬间动词（buy,die,join,lose……）不能直接与for since 连用.要改变动词 come/arrive/reach/get to-----be in go out----be out finish----be over open----be open die----be dead Buy---have Fall ill---be ill Come back---be back Put on ---be on/wear Worry---be worried Catch a cold---have a cold ……………… ★1.have代替buy My brother has had(不能用has bought) this bike for almost four years. ★2、用keep或have代替borrow I have kept(不能用have borrowed) the book for quite a few days. ★3、用be替代become How long has your sister been a teacher? ★4、用have a cold代替catch a cold Tom has had a cold since the day before yesterday. ★5、用wear代替put on b)用“be＋形容词”代终止性动词 1、be＋married代marry 2、be＋ill代fall (get) ill 3、be＋dead代die 4、be＋asleep代fall (get) asleep 5、be＋awake代wake/wake up 6、be＋gone代lose,die,sell,leave 7、be＋open代open 8、be closed代close/shut 9、be＋missing(gone,lost)代lose c)用“be＋副词”代终止性动词 1“be＋on”代start,begin 2“be＋up”代get up 3“be＋back(to)”代return to,come back to,go back to 4“be here (there)”代come(arrive,reach,get) here或go (arrive,reach,get) there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 to 2.用be in the army 代替join the army 3.“be in/at +地点”代替move to
编辑本段常用瞬间动词变延续性动词表
： 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 back 3. have come/gone out →have been out 4. have become → have been 5. have closed / opened→ have been closed/opened 6. 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 on 14. have borrowed/bought →have kept/had 15. have lost → haven’t had 16. have put on →have worn 17. have caught /get a cold → have had a cold； 18. have got to know → have known 19. have/has gone to → have been in 20. 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 league member/the soldier…
编辑本段用法注意：
1.现在完成时不能单独与准确时间连用,(如表示过去的时间状语） 如yesterday(morning、afternoon),last(morning、afternoon)等,除非与for,since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 ,如already（肯定）, yet（否定,疑问）, just, before, recently,still, lately,never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 ? 3. 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. 4. 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, 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 been 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. 5. 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. 6.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? 7.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. 8.一段时间+has passed+since从句 9. 现在完成时常和短语 "up to now /till now", "so far" (意思是从过去某一确定的时间一直延续到现在.) Up to/till now he's read many story books. 至今他已读过好多故事书. I've been to New York three times so far. 至今我已到纽约去过三次. 10 has gone (to),has been (to), has been (in) 的区别 gone:去了没回 been to :去过 been in：呆了很久 10.不能与when连用
编辑本段一般过去时和现在完成时
（ 1 ）、一般过去时的谓语动词用过去式,而现在完成时的谓语基本构成是“主语+ have/ has + 动词（V.）的过去分词”. 过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作；现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响. (2) 、一般过去时通常与表示过去的时间状语连用.如： yesterday, last week , two years ago ,just now ,in 2002 等；而现在完成时则常与 just ,already ,ever ,never 等副词和 these days ,this week ,since ., for . 等表示一段时间的状语连用. 试比较以下几组句子,有什么区别： ① A:Have you seen the film ? B:Did you see the film ? 分析：你看过这部电影吗?（ A ）句强调的是被问者对剧情是否了解；（ B ）句强调的是看这部电影的动作是否发生过,并不强调是否知道其内容. ② A:How has he done it ? B:How did he do it ? 分析：他是怎么做的这件事?（ A ）句强调的是他做这件事的方式对现在产生了某种影响；（ B ）句单纯的询问做这件事的方式. ③ A:He has lived in Beijing for 8 years . B:He lived in Beijing for 8 years . 分析：他在北京住了 8 年.（ A ）句讲的是到目前为止他在北京住了 8 年,可能还会继续在北京住下去.（ B ）句讲的是他在北京住过 8 年,现在已经不在北京了. （3）现在完成时强调过去发生的动作对现在的影响和结果,而一般过去时与现在没有联系,只是说明某个动作发生的时间是在过去. 比：I have washed the car. 我洗过了车.（看上去很漂亮） I washed the car a moment ago. 我刚才洗过车了. She has watered the flowers. 她已经浇了花.（不需要再浇了） She watered the flowers yesterday. 她昨天浇的花. I have written the letter but I haven't posted it yet. 信我已经写好了,但还没有寄出. I wrote the letter last week and I posted it three days ago. 我上周写的那封信,3天前寄出的. （4）现在完成时表示的动作或状态延续到现在并可能延续下去,而一般过去时则单纯表示过去某段时间内的经历. 比：It has rained for five hours. 雨已经下了5个小时了. It rained for five hours yesterday. 昨天下了5个小时的雨. He has waited for her for two hours. 他等她已经两个小时了. He waited for her two hours and then went home. 他等她等了两个小时,然后就回家了. I have reviewed two lessons this morning. 今天上午我已经复习了两课.（说话时还在上午） I reviewed two lessons this morning. 今天上午我复习了两课.（说话时已是下午或晚上）
编辑本段现在完成时与现在完成进行时相同点
1. 现在完成时和现在完成进行时都可以表示从过去某一时刻开始一直延续到现在的动作.如: I have worked in this school since 2001. I have been working here since 2001. 2. 现在完成时和现在完成进行时都可以表示一段时间内进行的动作.例如: Mr. Smith has taught English for 20 years. Mr. Smith has been teaching English for 20 years. 以上句子用现在完成时与现在完成进行时,含义上没有什么差别,两种时态可以互相换.但两种时态也存在有意义上和用法上的差别.
编辑本段现在完成时与现在完成进行时不同点
1. 从定义上来看,现在完成时表示的是已经完成的动作或者状态,常常与already"已经"或ever "曾经"连用,如: We have already learnt Module 3.我们已经学习了第三模块. She is the most beautiful girl I have ever seen.她是我见过的最漂亮的女孩. 而现在完成进行时则表示的是从过去某一时刻开始一直延续到现在,有可能还要进行下去的动作,一般不与already或ever等连用,如: We have been learning Module 4. 我们一直在学习第四模块.(不一定学完) 注意下面这组句子含义上的区别: I have read the novel. 我看过那本书了. (已看完) I have been reading the novel. (一直在看,不一定看完) 2. 相对于现在完成时表示一次性,现在完成进行时可以表示动作的重复.如: I have met him at the library. (我在图书馆见过他.) I have been meeting him at the library. (我经常在图书馆看见他.) 3. 现在完成时和现在完成进行时都可以表示刚刚结束的动作,但在含义上有区别.现在完成时强调的是动作的结果,而现在完成进行时强调的则是动作的过程.如: —You look so tired, what have you been doing 你看起来很累,做什么了 (强调动作) —We are very tired. We've been cleaning the house. 我们很累,我们刚才在打扫房子.(强调该动作所导致) —We've cleaned the house. You may come in now. 我们打扫过房子了,你可以进来了.(强调结果"房子干净") 4. 现在完成进行时态不能用来谈某个动作的具体次数或几件事情.这时,我们要用现在完成时态.如: I have been drinking five cups of coffee this afternoon.(×) I have drunk five cups of coffee this afternoon. 5. 现在完成时强调"事实";而现在完成进行时则强调"动作",并且常含有喜悦,愤怒,不满,厌恶等感情色彩.如: The lazy boy has lain in bed for a whole day. 这个懒孩子在床上躺了一天.(强调事实) The lazy boy has been lying in bed for a whole day. 这个懒孩子在床上躺了一天了.(强调动作,含有对小男孩厌恶的感情色彩) 6. 如果没有时间状语,现在完成进行时有延续性,现在完成时没有.如: I've been cleaning the house but I still haven't finished. I've cleaned the house, but I still haven't finished.(×)
编辑本段时间状语
现在完成时是一个与过去时间和现在时间都有关系的时态,因此,具有这样特征的时间状语都可以与现在完成时连用,具体情况有以下几种： 1. 与表示一段时间的状语连用,如“ for ＋时间段”,“ since ＋时间点”.例如： We have lived in this city for more than 40 years. 我们在这个城市里已经生活了 40 多年. We have lived in this city since 1958. 我们从 1958 年起就住在这个城市里. 从以上两个例句我们可以看出,与表示一段时间的状语连用时,谓语动词常为 stay, live, teach, learn, work, sleep, read, wait, keep 等具有延续性意义的动词. 2. 与笼统表示过去时间的状语连用,如 already, never, ever, just 等.含有这类时间状语的句子,其谓语动词表示句中的行为或动作发生在过去,但对现在有影响.例如： I've just found this library book. 我刚刚找到这本图书馆的书. have found 这一动作发生在过去,但影响到现在,即现在图书馆的书在我这儿. just 所表示的“刚才”是与现在有密切相关的过去时间. How beautifully she sis! I have never heard a better voice. 她唱得多美啊!我从来没听到过比这更优美的歌喉. never 表示广义的过去,而且一直到目前才截止. 3. 与表示包含过去和现在的一整段时间的状语连用,如 lately, recently, in the past few years, these few years, these days, up to now, so far 等.例如： How have you been recently ? 你近来状况如何? The famous writer has written a new book in the past two years. 那位著名的作家在过去的两年里写了一本新书. Have you seen her parents these days? 这些天你看见她的父母了吗? The Browns have visited a lot of places in China so far. 迄今为止,布朗一家已经参观了中国的许多地方. 注意：现在完成时不能与单纯表示过去时间的状语连用,如 yesterday, last week, in 2002, three days ago 等,因为它们与现在毫无关联.比如我们不能说： Han Mei has seen the film two days ago. 因为 two days ago 是单纯指过去的一个时间点,只说明“看”这一动作是在两天前发生的,与现在无关.但是,只要将它改为 since two days ago 就可以用在现在完成时的句子里了,因为它已经含有从过去到现在的时间段的意义了.
例4： 【谁能了解一下现在完成时的用法】[英语练习题]
思路提示：
一般形式:have done
例5： 现在完成时的一些用法..already,yet之类的词可不可以与since.for等连用?有些句子加了already和不加有什么区别吗?[英语练习题]
思路提示：
不能连用,already是已经的意思,更能体现现在完成时.
相关思考练习题：
题1：现在完成时用法
点拨：用法 （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 spent all of my money.(含义是:现在我没有钱花了.) Jane has laid the table.(含义是:现...
题2：举例说明现在完成时的用法
点拨：1 现在完成时有两层含义：1.表示过去发生的动作对现在造成的影响或结果2.表示过去的动作或状态持续到现在 现在完成时的构成： 主语+have/has +动词的过去分词.(have/has done, have/has been done) 2 现在完成时的基本句型： 基本结构：主语+hav...
题3：现在完成时标志词及用法
点拨：第一部分： 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，也可表示过去已经开始，一直延续到现在的动作或状态。学习现在完成时，先从结构和句式开始： 构成：主语 + have / has + 过去分词 + 其他(当主语是第三人称单数时用h...
题4：现在完成时的含义和用法。
点拨：现在完成时表示过去开始，但持续到现在的动作，或过去发生的动作，对现在留下后果或影响。常和for+一段时间，already, ever, never, just, yet, in the past few years/ over the last thirty years, so far, up to now, since 1980等状语连用。...
题5：现在完成时中for和since的区别和用法
点拨：since 和 for 都可以用在现在完成时的句子里，表示“多久（how long）”。 since 用在表示从过去某个时刻到现在，如 since six o’clock（从六点钟起），since last year（从去年开始），since I went away（自从我离开起）等； for用在表示一直延...