时态问题1!!!!! 请语法高手回答一个时态是否一致的问题!!!1

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被动语态要用be +过去分词。
1,have been doing sth.是从过去的一个时间开始,到目前为止,一直在做某事
如题中:We have been cleaning the classroom.“我们一直在清扫教室”(到说话这时还在清扫)
2,某事已经“被做”,要用 sth, have been done.
如:
The classroom has been cleaned."教室已经打扫了"
3,have是完成时的标志。
这里是现在完成时的用法,共3页:
http://www.jsqjzx.net/Article_Show2.asp?ArticleID=1355&ArticlePage=1

怎样区别现在完成时和现在完成进行时

现在让我们来比较一下现在完成时和现在完成进行时。在比较这两个时态时,关键在于对现在完成进行时的基本概念是否理解,因为对于现在完成时我们已经有了一个基本的理解了。
现在完成进行时是一兼有现在完成时和现在进行时二者基本特点的时态。由于它有现在完成时的特点,所以它可以表示某一动作对现在产生的结果或影响。由于它有现在进行时的特点,所以它也可以表示某一动作的延续性、临时性、重复性、生动性乃至感情色彩。
现在就现在完成进行时的这些特点和现在完成时作一简单的比较:

(1)现在完成进行时和现在完成时皆可表示动作对现在产生的结果,但前者所表示的结果是直接的,而后者所表示的则是最后的结果。如:
We have been cleaning the classroom.(a)
We have cleaned the classroom.(b)
(a)句可译为“我们打扫教室来着。”其直接结果可能是:我们身上都是灰。(b)句可以译为“我们把教室打扫过了。”其结果是:现在教室很清洁,可以用了。又,(a)句表示教室刚刚打扫过,(b)句则可能表示教室是昨天打扫的。
Be careful! John has been painting the door.(a)
John has painted the door.(b)
(a)句表示约翰刚刚把门油漆过,现在油漆还未干,所以你要小心。(b)句则无此含义,油漆可能已干了。

(2)现在完成进行时有时有延续性,现在完成时往往没有。如:
They have been widening the road.(a)
They have widened the road.(b)
(a)句的意思是他们在加宽马路,但尚未完工。(b)句的意思则是已完工了。有时现在完成时有延续性(如一些属于持续体的动词),但无临时性质。如:

Mr. Smith has been living in London since 1978.(a)
Mr. Smith has lived in London since 1979.(b)
(a)句有“史密斯先生在伦敦久居”的含义,(b)句则没有。

(3)但现在完成进行时并不总是具有临时的性质,如:
My moth! er has been teaching English for twenty years.(a)
My mother has taught English for twenty years.(b)
(a)句在此并无临时性质,但较口语化。(b)句则较为正式。又,(a)句表示动作现在仍在继续.并将延续下去,(b)句的动作是否延续下去,须由上下文决定,但在一般情况下都是延续下去的。

(4)现在完成进行时往往表示动作在重复,现在完成时则常常不带重复性。如:
Have you been meeting her lately?(a)
Have you met her lately?(b)
(a)句有“经常相会”之意,(b)句则没有。(b)句如与often,every day等时间状语连用,当然也表示动作在重复。

(5)现在完成进行时比较生动,有时含有明显的感情色彩,而现在完成时往往只说明一个事实,一种影响或结果,平铺直叙,没有什么感情色彩可言。如:
What have you been doing?(a)
What have you done?(b)
(a)句表示惊异。(b)句只是一个问题。

Have you been waiting long?(a)
Have you waited long?(b)
(a)句较(b)句生动。又,(a)句比较口语化。

I have been wanting to meet you for long.(a)
I have long wanted to meet you.(b)
(a)句比(b)句更亲切,更有礼貌。

Recently Mary has been doing her work regularly.(a)
Recently Mary has done her work regularly.(b)
(a)句显然是在表扬玛丽。(b)只说明一个事实。

下面还有一例,颇为有趣:
Who's been eating my apples?(a)
Who's eaten my apples?(b)
(a)句有强烈的感情色彩,表示愤怒不满,(b)句只是希望回答的一个问题。又,(a)句兼有进行时态,所以有“苹果未被全部吃光”的意思,(b)句是完成时态,说明“苹果一个不剩了”。

(1)have been cleaning是现在完成进行时态,
侧重动作过程,强调动作一直在持续,含有“一直在……”的意思。
We have heen cleaning the classroom. 我们一直在打扫教室。(打扫的工作可能还没结束)

(2)have cleaned是现在完成时态,
表示动作已经结束,着重动作造成的结果,有“已经……”的意思;

We have cleaned the classroom.我们已经打扫完教室了。(现在的结果:教室是干净的)

We have heen cleaning the classroom. 现在完成进行时
We have cleaned the classroom. 现在完成时
We have cleaning the classroom. 此句错误
We clean the classroom 一般现在时

就用你的这几个句子浅谈一下,希望有参考价值:
We have heen cleaning the classroom.
翻译:我们已经在打扫教室了。
这是现在完成进行时态,been表示动作/状态的延续。这种时态并不多用。
have been 更多的用在被动的现在完成时里面,主语经常是事物,如:
The problem has been solved.
**************
We have cleaned the classroom.
翻译:我们已经打扫玩教室了。
现在完成时态,这是非常常见及常用的时态,特征:have+过去分词。
*********************
We have cleaning the classroom. 病句,要么是我见识太少。
******************
We clean the classroom .语法上并没有错,一般现在时,表示反复发生的事情。可以译为“我们(经常)清扫教室。但是感觉这句子需加些修饰才更实用。

英语中及物动词有两种语态,即主动语态和被动语态。主动语态表示主语是动作的执行者被动语态表示主语是动作的承受者。被动语态由“助动词be+及物动词的过去分词”构成。助动词be有人称、时态和数的变化。

1. 一般现在时的被动语态构成:is / am / are + 及物动词的过去分词

Our classroom is cleaned everyday.

I am asked to study hard.

Knives are used for cutting things.

2. 一般过去时的被动语态构成:was / were + 及物动词的过去分词

A new shop was built last year.

Dinosaur eggs were laid long long ago.

3. 现在完成时的被动语态构成:has / have + been + 及物动词的过去分词

This book has been translated into many languages.

Many man-made satellites have been sent up into space by many countries.

4. 一般将来时的被动语态构成:will+ be + 及物动词的过去分词

A new hospital will be built in our city.

Many more trees will be planted next year.

5. 含有情态动词的被动语态构成:情态动词+ be + 及物动词的过去分词

Young trees must be watered often.

Your mistakes should be corrected right now.

The door may be locked inside.

Your homework can be handed in tomorrow.

6. 现在进行时的被动语态构成:am / is / are + being + 及物动词的过去分词

Uncle Wang is mending my bike now.→

My bike is being repaired by Tom now.

They are planting trees over there. →

Trees are being planted over there by them.

7. 不定式的被动语态:to + be + 及物动词的过去分词

There are two books to be read. →

There are twenty more trees to be planted.

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