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真纠结的英语词组的区别!be in 和 be ; have been in 和 have been;the last w

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真纠结的英语词组的区别!be in 和 be ; have been in 和 have been;the last week 和 last week……
1.be in 和 be (have been in 和 have been)的区别
例:They have been in China for two years.
They have benn Chian for two years.
2.the last week 和 last week 还有 a week before 的区别
例:I've been like this ever since ()
A.last week B.for a week(我知道肯定错) C.a week before(这个也肯定错)
D.the last week (希望把这整句翻译一下)
3.When 这个疑问词提问的是一段时间还是一点时间?
4.改写句子 I got to sleep two hours ago.
I (have) (been) (asleep) since ( ) ( ) (括号里是我填的,后面两个空我觉得似乎少了一个空)
真心恳切地请会的人耐心给我解答,财富值不会少的 万分感谢!
真纠结的英语词组的区别!be in 和 be ; have been in 和 have been;the last w
1.be in 和 be (have been in 和 have been)的区别
例:They have been in China for two years.
They have been China for two years.(错句)
have been in,have been to,have gone to
这三个短语都有“到某地去”的意思,但涵义和用法各不相同.
Have been in强调“过去曾去过”之意,表示经验;have been to的意思是“过去到过而现在已返回”,它强调“最近的经历”;have gone to表示“动作的完成”,强调人已离开说话的地方.
通过下列句子的对比,可以分清它们各自不同的涵义:
They have been in New York.(1)
They have been to New York.(2)
They have gone to New York.(3)
(1)句的意思是“他们曾去过纽约”,此语强调过去的经历,但没有说明现在是否已回来.言外之意,他们到过纽约,他们知道纽约在何处,该城市有多大,人口有多少等等.
(2)句的意思是“他们曾到过纽约,现在已回来了”.此语强调的是往返的经历.
(3)句的意思是“他们已到纽约去了”,此语的言外之意是“也许他们已经到达,也许现在还在途中”,它强调“去”的动作已经完成,所以人已不在说话的地点.
2.the last week 和 last week 还有 a week before 的区别
例:I've been like this ever since (last week)
从上周以来,我就是现在这个样子.
The last week 最后一周
Last week 上周
3.When 这个疑问词提问的是一段时间还是一点时间?
既是一段时间,又是一点时间.要看语境.
When are they to arrive?
When did the Roman Empire exist?
4.改写句子 I got to sleep two hours ago.
两小时以前我睡着了.
I (slept) (two) (hours) since (I) (could).