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……

题目

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）
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答案

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...