it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗?

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it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗?

it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗?
it __ ten years since he __here
A.is;left B.has been;had left
为什么是A啊,有since不是应用完成时吗?

it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗?
it is.since是一个固定的句型,是it has been.since的变形
B错在主句如果用现在完成时it has been,从句的谓语动词应该用一般过去或者现在完成时,而不用过去完成时;主句如果用过去完成时,从句才用一般过去时或过去完成时.

A
完成时中since后的从句必须是过去时!
前面那个空填is 或has been均可。

She has left her hometown for ten years改同义句 Ten years __ __ __ she __ her hometowm. 英文单选题the city looks __ it used to __ ten years ago.A.what,do B.as,like C.what,like It took them ten years ------- the bridge 一条横线一个字母 you can ride on it.__ __ __ __ __you write with it.__ __ __ __ __ __very nice to look at.__ __ __ __ __ __ __ __ __ you see the film here.__ __ __ __ __ __say or write down numbers.__ __ __ __ __ ten times ten.__ __ __ __ __ it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗? __ ten years since I left my hometown .A.There are B.It is C.They are 选什么为什么?老师说选B厄 why ---Remember the first time we met ten years ago? ---Sure. __ it happened only yesterday.A even if B as though C unless D since It is ten years since his father died..同意句his grandpa ------- -------- ------- -------ten years ago 改为同义句:the boy is only ten years oldHe is only a __ __ . How long __ you __(be) a policeman?For ten years They left Fuzhou five years ago.同义句转换 :It __ five years __ they ___ Fuzhou.It __ __ five years __ they __ Fuzhou. 句型转换.1.He died ten years ago.=He_____ _____ ______for ten years.=It ______ten years ______ he died.2.The film began half an hour ago.=The film ______ ______ on ______ half an hour ago.3.Mr Chen left our school two years ago.=Mr Chen ______ __ It's several hundred years old.(同义句替换) It __ __ several hundred years ago. It was ten years since I left my hometown.改错 It is ten years since he ____(join) the army It()ten years since they settled down here填空 it's been ten years 为什么不加for he could use computers well when he was ten years old同义句he __ __ __ use computers well ___ ___ ___ ___ ten