Question

请问have been这个时态一般怎么用 ？

这个时态的题目 尤其是句型转换和按适当形式填空做不来！5`谁帮帮我！

Answer 1

have been:

(+-ing动词)：现在完成进行式

例句与用法:
1. The old currency will have been phased out by 1990.
旧币分阶段至1990年将全部禁止流通.

2. More than200 films on agriculture have been released.
一共发行了200多部关于农业的影片。

3. She is said to have been an actress about twenty years ago.
据说她在20年以前曾是一位女演员。

4. The three children have been sponging on their grandparent for over ten years.
10多年来这3个孩子一直靠他们的姥爷、姥姥养活。

5. He is said to have been the richest man in Taiwan.
据说他以前是台湾最有钱的人。

6. Had he not saved me, I might have been drowned.
我可能溺死了，若非他救了我。

7. Flowers soon faded when they have been cut.
花剪下后很快就会枯萎。

8. I have been away from Paris for two weeks.
我离开巴黎已经两星期了。

Answer 2

have been是指去过某地
have gone是指去了某地，但还没有回来

Answer 3

have been 表示状态..

Answer 4

助动词have的用法
1）have+been +过去分词，构成完成式被动语态，例如：
English has been taught in China for many years.(中国教英语已经多年。)

2)现在完成进行时构成：have / has been + 现在分词
用法:)下面详细举例：）~

用于表示动作从过去某一时间开始一直延续到现在或离现在不远的时间，动作是否继续下去，则需视起来而
定。如：
How long has it been raining? 雨下多久了？
She has been sitting there for more than 2 hours. 他已经在那坐了两个多小时了。
We’ve been seeing quite a lot of each other recently. 最近我们常常见面。
He has been telephoning me several times in two days. 这两天他打了好几次电话给我。
注意：使用现在完成进行时还有以下一些情况：
一般现在时 主要由动词原形表示，但第三人称单数后要加词尾s，另外be和have有特殊的人称形式
例：it all depends
he coves sports
i know it

现在进行时 由助动词be的人称形式加现在分词构成
例：i am working

一般将来时 由助动词shall will加动词原形构成
例：i shall go
you will go

一般过去时 由动词的过去式表示
例：i was glad to get your letter

现在完成时 由have的人称形式加过去分词构成
例： i have read it
he has read it

过去进行时 由be的过去式和现在分词构成，主要表示过去某个时刻正在进行的动作
例：the wind was no longer blowing．

过去完成时 由had加过去分词构成，主要表示过去某时前业已发生的动作或情况
例：they showed us the new machine tools they had turned out

一般过去将来时 由should would加动词原形构成，表示从过去某时看来将要发生的事情
例： he was sixty－eight，in two years he would be seventy

现在完成进行时 有have（has）been 加现在分词构成
例： how long has it been raining？

过去完成进行时 由had been加现在分词够成
例 ：it had been raining for two days the fields were all under water．