作业帮It's four years since Mike ____ to Tibet.A.has been B.is com
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It's four years since Mike ____ to Tibet.A.has been B.is coming C.will come D.came
为什么不是A呢
为什么不是A呢
句型：
It is +一段时间+since...意思是“自.发生以来已经一段时间了”.后边用一般过去时
如：
it is three years since he died.(自)他去世以来已经三年了.
而你的A属于另外一种
即：since 引导的从句,主句用现在完成时,从句用一般过去时!从句就是since后边的句子.
如：
He has studied very hard since he came to our school.
自从他来到我们学校,他学习就非常努力.
注意这个和：He has been a teacher since 1999.仔细观察哦,这个是简单句
It is +一段时间+since...意思是“自.发生以来已经一段时间了”.后边用一般过去时
如：
it is three years since he died.(自)他去世以来已经三年了.
而你的A属于另外一种
即：since 引导的从句,主句用现在完成时,从句用一般过去时!从句就是since后边的句子.
如：
He has studied very hard since he came to our school.
自从他来到我们学校,他学习就非常努力.
注意这个和：He has been a teacher since 1999.仔细观察哦,这个是简单句
It's four years since Mike ____ to Tibet.A.has been B.is com
It's five years since Mike____to Tibet.A.came B.has been C.w
He ____ Hong Kong since ten years ago.A.has been to B.has go
分析一下它的含义?It is has been four years since he lived here．
1.it ____ 5 years since we knew each other.A is B had been C
-How long has Eliza been a nurse?-_A.Since 2004,B.Four years
英语单选题Its fours years since Mike ---------- to Tibet.
It is a week since he has been to BeiJing.
It ____ ever since 1924. A.has been broadcast B.has been bro
翻译 It's five years since he smoked It has been 2 years since
it is 3 years since Tom has been abroad
It ____ five years since he has left for Beijing.A.was B.has