it+was+since

@门顾4248:什么时候用It was+一段时间 +since,什么时候用It is +一段时间+since? - 作业帮
雷钞18980279158…… [答案] It_has been ten years since I met her.

@门顾4248:是否有It was +一段时间+since -
雷钞18980279158…… 有的 比如 It was three years since I got here. 从我到这儿有三年时间了

@门顾4248:it was +since -
雷钞18980279158…… it is (has been)+一段时间+since从句 since从句要用过去式“自......有多长时间了” it is three years since he died.(自)他去世以来已经三年了

@门顾4248:有没有it was +时间 since ... -
雷钞18980279158…… 有那样的句型. 比如: It was three years since he had left.自从他离开,已经三年了. since用过去完成时,主句用一般过去时,这样完全可以啊.这句话是在述说过去的事情,用it was一点没错啊!

@门顾4248:有没有:It was + 一段时间 +since +主语 +过去完成时态? -
雷钞18980279158…… 的确没有,since只能这么用 ① since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six).例如: I have been here since 2000. 2000起,我一直在这儿. ② since +一段时间+ ago.例如: I have been here since ...

@门顾4248:有没有it was +时间 since ...大家一定知道有It is +时间 since .请问有没有 it was +时间 since.如果有,请问it was 后面加什么?since后面加什么? - 作业帮
雷钞18980279158…… [答案] 有那样的句型. 比如: It was three years since he had left.自从他离开,已经三年了. since用过去完成时,主句用一般过去时,这样完全可以啊.这句话是在述说过去的事情,用it was一点没错啊!

@门顾4248:since的用法It has been three since i was a solider.和 It has been three years since I joined the army.有什么区别,哪个是现在还当兵, - 作业帮
雷钞18980279158…… [答案] Since 用法小结 一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用.例如: 1、He left the village in 1982 and I haven't seen him since then.1982年他离开这个村子,...

@门顾4248:1.it's +时间+since -
雷钞18980279158…… 因为它们各有自己的句型.如下 it has been/is +一段时间+ since且句子用一般过去时.it was/wasn't + 一段时间 +before 从句用一般过去时 it will be/won't be +一段时间 +before 从句用一般现在时表示将来 所以在选择用before还是用since只要记住...

@门顾4248:It be +一段时间 +since +从句.这个里面的be动词是根据什么来判断是is还是was? - 作业帮
雷钞18980279158…… [答案] It is/has been +一段时间+ since+一般过去时态如:It is five years since I left here.我离开这里有五年了. It was +一段时间+ since+过去完成时 这是固定用法.

@门顾4248:有没有it was....(time)..since的结构? -
雷钞18980279158…… 有没有it was....(time)..since的结构?没有.因为since指的是“自从(过去某个时间)以来”,与现在有联系,所以主句不可能说It was...

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