現(xiàn)在完成時

一、知識梳理

要點(diǎn)一：

現(xiàn)在完成時用來表示之前已發(fā)生或完成的動作或狀態(tài)，但它的影響現(xiàn)在還存在;也可表示持續(xù)到現(xiàn)在的動作或狀態(tài)。

1.動作在過去發(fā)生并持續(xù)到現(xiàn)在。I have lived in Jiangyinfor 15 years./since15 yearsago.

2.動作在過去發(fā)生并對現(xiàn)在產(chǎn)生影響。I have seen this film before.

3.某個動作從過去到現(xiàn)在已經(jīng)發(fā)生了多次。

He has read this book three times. I have been to Beijing four times.

要點(diǎn)二：

1、

規(guī)則變化的過去分詞與過去式的變化一樣，在動詞詞尾加ed;

不規(guī)則變化的過去分詞見不規(guī)則動詞表，需要同學(xué)記憶。

現(xiàn)以see the film為例將現(xiàn)在完成時的肯定句，否定句和疑問句列表如下：

have

肯定句：I/You/We/Theyseen the film. He/She /Itseen the film.

have

否定句：I/You/We/Theynot/ haven’t seen the film.

has

He/ She/Itnot/hasn’t seen the film.

Have

疑問句：I/you/they seen the film? Yes, you/ we/I/they have. No, you/ we/I/they.

Has

he/she/it seen the film? Yes, he/ she/ it has. No, he/ she/ it.

2、

①一般直接在詞尾加上ed。look—looked

②以e結(jié)尾的動詞，直接加d。move—moved③以y結(jié)尾，y前面是輔音字母的動詞，變y為i，再加ed。carry—carried④部分動詞需雙寫尾字母，加ed。stop—stopped

⑤不規(guī)則變化

AAB

原形	過去式	過去分詞	中文
beat	beat	beaten	打敗

ABC

原形	過去式	過去分詞	中文
be	was / were	been	是，在…
begin	began	begun	開始
blow	blew	blown	吹
break	broke	broken	破裂、折斷

ABB

原形	過去式	過去分詞	中文
understand	understood	understood	理解、明白
bring	brought	brought	帶來
build	built	built	建造
burn	burned/burnt	burned/burnt	燃燒

要點(diǎn)三：

用法：現(xiàn)在完成時既涉及過去，又聯(lián)系

用法1：

常與just(剛剛)，already(已經(jīng))，never(從來沒有)，ever(曾經(jīng))，before(以前)，yet(仍然)，once(一次)，twice(兩次)，many times(很多次)，how many times(多少次)，so far(迄今為止)，during the past(last)three years(最近三年來)等連用。

※副詞的位置：

just

①just常用于肯定句中，放在have / has后，He hascome .

never

②never表示否定,放在have / has后, He hasvisited the Great Wall.

ever

③ever用于疑問句中,句型為: Have / Has+主語++過去分詞?“…曾經(jīng)……過嗎?”用于詢問某人過去的經(jīng)歷。Have youbeen to the farm?

before

④before用于句末，The woman has never heard of that.

yet

⑤yet用于句末或not之后.(用于否定句和疑問句)Has the train arrived? No, not

already

⑥already用于肯定句, have / has之后或句末.We havefinished it.

So far,

⑦so far用于句首或句末.we have visited the moon.

用法

for 19 years

①for+表示一段時間的詞語I have taught English。

since 1986

②since+表示過去時間點(diǎn)的詞語He has been at this school.

since I was born.

③since+表示過去的時間狀語從句I have lived here

since 20 years ago.

④since+一段時間+ago.I have known him

用法3：

twice

I have been to Beijing.我去過北京兩次。

twice

He has watched the film.這部電影他已經(jīng)看過兩遍了。

要點(diǎn)四：

現(xiàn)在完成時態(tài)中

(for，since，how long, all one’s life)

用的動詞必須是表示延續(xù)的情況或動作的動詞，即延續(xù)性動詞

。

如：be，have，know，live，work，study，learn，teach，keep，speak，talk，draw，wait，wear，walk，sleep，drive，write，do，clean等。

have been

Ia teacher.has he lived here?

要點(diǎn)五：

語連用

。

如this morning，today，this week，these days

this year.

He has been to Beijing three times

this morning.

He has written two letters(說話時間在上午)

this morning.

He wrote two letters(說話時間在下午或晚上)

要點(diǎn)六：

英語中還有一些動詞的意義決定它們所表示的動作不能延續(xù)

常見的有：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。這些動詞可用于現(xiàn)在完成時，說明某個動作的結(jié)果還存在，但不能和表示一段時間的狀語(how long，for，since)連用。

for two hours

He has come back.(√)He has come back.(×)

※但在否定句中，非延續(xù)性動詞也可用表示一段時間的狀語來修飾(因?yàn)榉浅掷m(xù)性動詞的這種否定形式構(gòu)成一種狀態(tài)，而這一狀態(tài)是可以持續(xù)的)，如

I haven’t heard from my father for a long time.

We haven’t seen him since 1999.

【注意】：當(dāng)終止性動詞(非延續(xù)性動詞)與表示一段時間的狀語(how long，since，for，all

one’s life)相矛盾時,改正錯句的方法有如下幾種:

用副詞

(1)

two weeks ago.

He has come back for two weeks.(錯)改為:He came back(正)

ten days ago

I have lost my bike for ten days.(錯)改為:I lost my bike.(正)

用

(2)。

He has joined the League(社團(tuán))for 3 years.(錯)It is 3 years since he joined the League.

I have bought the book for 5 days.(錯)It is 5 days since I bought the book.(正)

He has died for 20 years.(錯)It is 20 years since he died.(正)

用

(3)

He has left home for 20 years.改為:Twenty years has passed since he left home.

He has lost his pen for 2 days.改為:Two days has passed since he lost his pen.

用系表結(jié)構(gòu)來改寫

(4)

has been dead

He has died for 20 years.改為: Hefor 20 years.

has been open

The factory has opened since 1999.改為:The factorysince 1999.

been away

How long has he left?改為:How long has he?

用相應(yīng)的延續(xù)性動詞替代非延續(xù)性動詞。

(5)

has had

He has bought the book for two weeks.改為:Hethe book for two weeks.

常見的相應(yīng)轉(zhuǎn)換形式如下:

keep

borrow / lend→,

have

buy/catch→,

be over

finish /stop/end→,

be on

begin / start→,

be open

open→,

be closed

close→,

be dead

die→,

be away

leave→,

be up

get up→,

be asleep

fall asleep→,

be ill

fall ill→,

Married→be married

know

get to know→,

be lost

lose→,

be

become→,

study,

begin to study→

be in / be

join→,

have a letter

receive / get a letter→,

have a cold

catch / get a cold→,

be in the army /be a soldier

join →,

be back

return / come back / get back→,

be in school / be a student

go to school→,

be in /at / be here /be there

arrive /come / go / move / reach /get to→,

I havekeptthis bookfor three days.

He hashadthis carfor two years.

The film hasbeen over/onfor half an hour.

The doghas been deadfor 3 days.

My parentshas been marriedfor 15 years.

他參軍已有三年.He has joined the army for three years.(錯)改為:

has been in

Hethe army for three years / since three years ago.

has been a soldier

Hefor 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.

要點(diǎn)七：

現(xiàn)在完成時中應(yīng)注意的幾個問題

have/has gone to；have/has been to；have/has been in的區(qū)別

have/has gone to：已經(jīng)去了，還沒有返回;強(qiáng)調(diào)“去了”，現(xiàn)在人不在說話的現(xiàn)場

have/has been to：曾經(jīng)去過某地，現(xiàn)在已經(jīng)回來了，后面可接表示“次數(shù)”的狀語;

have/has been in：表示某人“已在某地停留一段時間，現(xiàn)仍在那里”，其后常帶表示一段時間的狀語。

①He has been to the USA three times.他到美國去過三次。(過去“到美國”，現(xiàn)在已“不在美國”)

②--Where's your mother? --你媽媽在哪?

--She has gone to thehospital. --她去醫(yī)院了。

③She has been to Shanghai only once.

④--How many times has he been there? --He's been there many times.

⑤They have been at the bus stop for half an hour.他們在車站呆了半小時。(現(xiàn)在仍然在車站)

⑥We have been in Xi'an for two weeks.我們在西安呆了兩個多星期。(現(xiàn)仍在西安)

⑦How long have they been in China?他們在中國呆了多長時間了?(仍在中國)

要點(diǎn)八：

如何通過與一般過去時做比較,進(jìn)一步掌握現(xiàn)在完成時?

一般過去時和現(xiàn)在完成時的動作都發(fā)生在過去,但意義卻不同.

(1)一般過去時只表示過去的動作或狀態(tài),和現(xiàn)在不發(fā)生關(guān)系。

現(xiàn)在完成時表示過去發(fā)生的某一動作對現(xiàn)在造成的影響,強(qiáng)調(diào)的是現(xiàn)在。

learned

如:Iten English songs(說明過去學(xué)過,現(xiàn)在是否記得,不是本句的內(nèi)容)

have learnt

Iten English songs.(learn發(fā)生在過去,但強(qiáng)調(diào)我現(xiàn)在懂英語歌曲)

cleaned

Ithe blackboard halfan hour ago.(只說明“擦”和其發(fā)生的時間)

have cleaned

Ithe blackboard.(說明現(xiàn)在黑板是干凈的)

has written

The teachersome new words on the blackboard(黑板上現(xiàn)在有單詞)

wrote

The teachersome new words on the blackboard(黑板上現(xiàn)在沒有單詞)

(2)一般過去時可以和表示過去的時間狀語連用,如:yesterday, last year, three days ago, just now,等。現(xiàn)在完成時不能和表示過去的時間狀語連用,其時間狀語可以是since…,for… , just, ever, never, before, already, yet , so far, all one’s life等

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