before现在完成时还是过去时

现在完成时和一般过去时的区别

现在完成时和一般过去时都表示一个在过去完成的动作，但现在完成时强调的是与现在的关系，如对现在产生的结果或影响等，属于现在时范围，谈论的是现在的情况。而一般过去时只表示动作在过去某一时刻发生，不表示和现在的关系，现在情况可能已发生变化。 Who opened the door? (“谁开的门？”只强调过去开门这一动作，门现在可能已关上。) Who has opened the door? (“谁把门开了？”强调门现在依然还开着。)

◇ 现在完成时不能与明确的过去时间状语连用，如：three days ago, last year, yesterday, last

Sunday, in 2008等等。如句中有以上这些明确的过去时间状语，应用一般过去时。再有，

过去发生的一个动作，

如现在情况已经发生的变化，也应用一般过去时。

☆特别提醒：如果这些过去时间状语前有since，表示“自过去某一时间一直延续到现在”，应用现在完成时。

He finished reading the book the day before yesterday. I put my ruler in my pencil-box, but

现在完成时与一般过去时的区别 1

现在完成时与一般过去时的区别 1

现在完成时与一般过去时的区别

1. 一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作。说话的侧重点只在于陈述一件过去的事情，不强调对“现在”产生的影响。如：

He visited Guilin in 1998.他1998年参观过桂林。(只说明去桂林的时间)

2. 现在完成时表示动作发生在过去，对现在造成了影响或产生了结果。不与确定的过去时间状语连用。如：

Jill has bought a new computer.吉尔买了一台新电脑。（着重点是现在有了一台新电脑）

3. 两种时态的区分

现在完成时与一般过去时的区别 1

（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“助动词have /has +过去分词”。如：

（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。

看看以下的几

现在完成时和过去完成时的区别：总汇。特别好

现在完成时和过去完成时的区别

一、从结构上区别

现在完成时：主语+ have / has + 过去分词（肯定式）

主语+ have / has + not + 过去分词（否定式）

Have / Has + 主语+ 过去分词（疑问式）

过去完成时：主语+ had + 过去分词（肯定式）

主语+had + not + 过去分词（否定式）

Had + 主语+ 过去分词（疑问式）

(二)从时间状语区别

现在完成时: 常用的时间状语包括“now, today, tonight, thi s week, this year, already, yet, just, recently…etc”。

过去完成时: 常用的时间状语包括“by, at, before等构成的短语”。

注意：当表示一段时间，现在完成时和过去完成时都可以用for 或since引导的状语。

例如：Have you had your lunch yet? 你吃午饭了吗？

Yes, I have . I’ve just had it. 是的，我刚吃完。

I have had a clock now. 我现在有一个闹钟了。

Have you already posted the p

一、 单项选择。

1、Both his parents look sad . Maybe they _________what's happened to him.（呼和浩特）

A. knew B. have known C. must know D.will know 2、He has _______ been to Shanghai, has he ? A. already B.never C.ever D. still 3、Have you met Mr Li ______？

A. just B. ago C.before D. a moment ago

4、The famous writer _____ one new book in the past two year.

A. is writing B.was writing C.wrote D.has written 5、—Our country ______ a lot so far. —Yes. I hope it will be even ______. A. has changed ; well B. changed ; good

C. has changed

练习题

1.Where are the boy students? They _____ to the school factory.

A. have been B. have gone C. went

A. Have?copied?have B. Have?copied?did C. Did ?copy?had 8. “Why ______ she _______ angry ?” “Because he _____ at her just now .”

2.Is your father in? No, he ___ _ to Shenzhen. Has he ever been A. did?get?shouted B. has?got?shouted there before ?

Yes, he ___ there several times

A. has been, has gone B. has gone, has been C. has gone, has gone.

3.He asked me if I___ __ t

一般过去时和现在完成时练习题

1. A. 用already或yet

1) Have they taken down the old pictures ___ ___? No, they haven’t____ ___.

2) Most of us have finished our compositions _____ .

3) He said he hadn’t visited the exhibition _____ ___.

B.用since或for

1) We have learned five lessons __ __ _ the beginning of this term.

2) Mrs Liao has been in hospital __ _ ___last week.

3) I have stayed at my aunt’s ___ __two weeks.

C. 用have gone或have been

1) Where are the boy students? They _____ to the school factory.

2) Is your father in? No, he ___ _ to Shenzhen. _____

新概念一册过去时与现在完成时练习3

一 动词

Buy---_______ _______ Lose---_______ _______ Find---_______ _______ Make---_______ _______ Get---_______ _______ Meet---_______ _______ Have---_______ _______ Send---_______ _______ Hear---_______ _______ Sweep---_______ _______ Leave---_______ _______ Tell ---_______ _______ 二．过去时与现在完成时

1.He ___ ____(find) his pen a minute ago. 2.They ___ ___(leave) this morning. 3.He____ ___(lose)his umbrella yesterday.

4.I___ ___already__ ____(sweep)the floor . 5.___ _

新概念一册过去时与现在完成时练习3

一 动词

Buy---_______ _______ Lose---_______ _______ Find---_______ _______ Make---_______ _______ Get---_______ _______ Meet---_______ _______ Have---_______ _______ Send---_______ _______ Hear---_______ _______ Sweep---_______ _______ Leave---_______ _______ Tell ---_______ _______ 二．过去时与现在完成时

1.He ___ ____(find) his pen a minute ago. 2.They ___ ___(leave) this morning. 3.He____ ___(lose)his umbrella yesterday.

4.I___ ___already__ ____(sweep)the floor . 5.___ _

现在完成时教学设计

备课人：黄红兵

预习导航：

主语+ have/ has + 过去分词（pp）

否定形式haven’t ( have not ）+过去分词

hasn’t ( has not ) +过去分词

疑问句把助动词have / has 放在句首

现在完成时的结构

注：主语若是第三人称单数助动词用has

1、规则变化（过去分词与过去时变化规则一样）

(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

(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

过去分词预习检测：一、

1、My father has finished his work.(改为否定句)

My father---------------- his wor

I、辨析

A. 用already或yet填空

1)- Have they taken down the old pictures _____

-No, not ______.

2) Most of us have ________ finished our compositions.

3) He has n’t visited the exhibition _______.

4) I have finished my homework ______.

5)I haven’t finis hed my homework ____.

B.用since或for填空

1) We have learned five lessons _______ the beginning of this term.

2) Mrs. Liao has been in hospital _______last week.

3) I have stayed at my aunt’s _______two weeks.

C. 用have gone to或have been to填空

1) -Where are the boy students

-They _____ to the school lib