in...yeas 是现在完成时态的标志吗

RT:

不好意思 问这么原始的问题    

携隐的SC笔记是这样总结的－－－－－－－－

“完成时态:since; within/during/over/in+the past/last/recent+时间短语(注意in the last year用完成时,last year用过去时,不要混淆!)”

所以我做题一直以此为准

但是今天作PREP语法笔记138题 解释中说: in the previous thirty yeas 应该用一般过去时态 而且正确选项也排除了"in the previous thirty years“ 这一项

我就云彩了

请问应该以哪个为准呢？

你给的那个准则我是从未见过

A:使用has increased in the previous thirty years

B: 使用has increased over the previous thirty years

A时态确实有误因为表示早先的30年前应使用过去式

但我记得一位牛人表示原句意时态是不能变更的原则下

B使用over the previous thirty years有从过去到现在的含义

再加上原句意时态除非必要否则不变更的原则下,B确实是正确答案…….

ok, i get it, thanks a lot for u guys~

What on "xie yin"'s note refered, is not an absollute rule, but an practical one.

今天我Test 到类似题想到你上次提到的in the last year可否使用完成式原则

我的笔记本上也写了in the last year时态上除了一般过去式v,也可使用现在完成式(不好意思,老人家记性欠佳-.-!!)

我觉得除了时态这条规则除外应该还要考虑其它考点如你提的那道一条考点之一:While前后平行对称……原题:According to……., while the surface temperature of ….has risen over the last century……., the surface temperature……. has increased over the previous thirty years

下面找到的都是单纯使用完成式下没有像类似你找到的题目两个选项都存在下…….亦或就如我表示原句意A时态是不能变更的原则下?

还是句意真正重点??当然还有许多考点的可能….etc

目前只求当时的考运…^^

我在longman找到一个例句

→Interest in golf has grown rapidly in the last ten years.

在SC大全里出现类似用法

【SC大全】Despite the recent election of a woman to the office of prime minister, the status of women in Pakistan is little changed from how it was in the last century.
(A) is little changed from how it was
(B) is a little change from how it was
(C) has changed little
(D) has changed little from how it has been
(E) is little changed from the way it was

(c)

【SC大全】In the last few years, the number of convicted criminals given community service sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have risen dramatically.
(A)sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have
(B)sentences, performing specific jobs that benefit the public while being allowed to remain unconfined, have
(C)sentences, performing specific jobs beneficial to the public while they are allowed to remain unconfined, have
(D)sentences which allow them to remain unconfined in their performing of specific jobs beneficial to the public has
(E) sentences allowing them to remain unconfined while performing specific jobs that benefit the public has
            

(e)

那么,Prep里面的解释也是绝对化了的

in...years 可以使用现在完成时态也可以使用一般过去时

但是哪个时态更门当户对就未知

让我想起了GWD里面的did for years做正确答案的题

结论：一切皆有可能