什么时态:Job hunting has always been a headache for college graduates.为什么用been,等.

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什么时态:Job hunting has always been a headache for college graduates.为什么用been,等.

什么时态:Job hunting has always been a headache for college graduates.为什么用been,等.
什么时态:Job hunting has always been a headache for college graduates.
为什么用been,等.

什么时态:Job hunting has always been a headache for college graduates.为什么用been,等.
这句话的翻译:找工作对大学毕业生来说一直是个很头疼的问题.
have been doing 表示动作从过去就已经发生,到现在还在进行,翻译为“一直”
have been +名词 表明这个名词以前就有,并且现在也有,即表示从过去到现在一直存在的事物.
ps:现在完成进行时
一、现在完成进行时的谓语动词构成 have/has been working
二、现在完成进行时的功能
(一)表示从过去某时开始一直持续到现在的动作,并且还将持续下去.
I have been learning English since ten years ago.
自从十年前以来我一直在学英语.(动作还将继续下去)
(二)表示在说话时刻之前刚刚结束的动作.
We have been waiting for you for half an hour.
我们已经等你半个钟头了.(动作不再继续下去)
(三)表示一个从过去开始延续到现在,可以包括现在在内的一个阶段内,重复发生的行动.
She has been playing tennis since she was eight.
注意:
(一)表示状态的动词不能用于现在完成进行时.
I have known him for years.
我认识他已经好几年了.
(二)有些现在完成进行时的句子等同于现在完成时的句子.
I have been working here for five years.
I have worked here for five years.
我在这里已经工作两年了.
(三)大多数现在完成进行时的句子不等同于现在完成时的句子.
I have been writing a book.(动作还将继续下去)
我一直在写一本书.
I have written a book.(动作已经完成)
我已经写了一本书.
现在完成进行时与现在完成时的区别
(一) 现在完成时分“已完成”和“未完成”两种用法:
1.“已完成”指的是动作发生在过去,强调其对现在产生的影响.
I have seen this film.
我看过这部电影.(意思说我已经知道了电影的内容.)
注意:
“已完成”这种用法一般不带时间状语,但可以和already,yet,before,ever,just,no等副词连用.
I have never said he is rich.我从来不说他有钱.
2.“未完成”指的是动作从过去开始,且一直继续到现在.因此不能用表示瞬间性的或称短暂性的动
词.“未完成”的现在完成时常与since结构或“for+一段时间”的状语连用.
I have lived here since I was born.
我一出生就住在这里.
注意:
“未完成”这种用法还常与until now,so far,in/during the past/ last...等连用.
In the past ten years,many new schools have been built up in our city.
过去十年中我市已兴建了许多新学校.
(二)现在完成进行时与现在完成时的“未完成”用法类似.它强调动作的延续,常常译做“一直在……”.其基本用法有三个:
1.现在完成进行时表示从过去开始、现在仍在继续的动作.其时间状语除了since结构和for结构外,
还有all this time,this week,this month,all night,all the morning,recently等状语.
I’ve been waiting for an hour and he still hasn’t turned up.
我等了一个小时,可他还没来.
2.现在完成进行时还用来表示从过去开始、现在刚刚结束的动作.
I’m sorry I’m late.Have you been waiting long?
真对不起,我迟到了.你等了很久了吧?
3.现在完成进行时还可以用来表示反复的、连续的动作.
She has been telephoned her husband,but there is no answer.
她一直在给她丈夫打电话,但没有人接.
4.现在完成时强调动作行为的结果、影响,而现在完成进行时只强调动作行为本身.
Tom’s hands are very dirty.He has been repairing the car.
The car is going again now.Tom has repaired it.

这个是现在完成时,基本结构:主语+have/has+动词的过去分词。
有两种情况要用到这种时态:
1.过去发生并且已经完成的动作对现在造成影响或后果;
2.过去某一时间开始并一直持续到现在的动作或状态。
本句子的意思是“找工作一直是大学毕业生的头痛”
很显然,本句子是属于第二种情况,由某个时间开始,就是大学生开始多起来,变得不值钱的时候,他们就变得难以找工作...

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这个是现在完成时,基本结构:主语+have/has+动词的过去分词。
有两种情况要用到这种时态:
1.过去发生并且已经完成的动作对现在造成影响或后果;
2.过去某一时间开始并一直持续到现在的动作或状态。
本句子的意思是“找工作一直是大学毕业生的头痛”
很显然,本句子是属于第二种情况,由某个时间开始,就是大学生开始多起来,变得不值钱的时候,他们就变得难以找工作,而且一直到现在也是这样。

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因为有 has
has +过去分词

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