句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题It ___ten years since we last ____in Beijing.A.was met B.has been metC.was met D .is met 老师讲的有点搞不懂 个人觉得B 也对啊 亟待解决老师讲

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句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题It ___ten years since we last ____in Beijing.A.was met B.has been metC.was met D .is met 老师讲的有点搞不懂 个人觉得B 也对啊 亟待解决老师讲
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句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题It ___ten years since we last ____in Beijing.A.was met B.has been metC.was met D .is met 老师讲的有点搞不懂 个人觉得B 也对啊 亟待解决老师讲
句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题
It ___ten years since we last ____in Beijing.A.was met B.has been metC.was met D .is met 老师讲的有点搞不懂 个人觉得B 也对啊 亟待解决
老师讲的是 met 非延续性动词 应该用一般现在时 所以是is那个句型 是么

句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题It ___ten years since we last ____in Beijing.A.was met B.has been metC.was met D .is met 老师讲的有点搞不懂 个人觉得B 也对啊 亟待解决老师讲
你好,关于你问的问题回答如下
（1）It is +时间段+since 从句 （是规范说法）

（2）It has been +时间段+since 从句 （口语说法）

(3) 他们表达意思都是相同, 都表示：自从.起,自从.以来,已经有多长时间了

（4）若since引导的状语从句的谓语动词是终止性的过去时,则从句表示的时间是“从动作开始的那一时刻起”.
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.

We have been missing them since they left here
自从他们离开这里,我们就一直很想念他们.

（5）若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时,则从句表示的时间是“从那持续动作或状态结束时算起”.如：

I haven’t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,这句应译为“我醒后还未听到任何声音”.

John is now with his parents in New York, it is already three years since he was a teacher约翰现在和父母一起住在纽约,他不当教师已经三年了.


How long is it since you lived in Shanghai?你离开（没住在）上海多久了?

It is half a month since he was a League member.他退团（不当团员）半个月了.

It’s been quite some time since I was last in London我离开伦敦已很长时间了.比较：He has written to me frequently since I was ill.自从我病愈以来,他屡次给我写信.（从句谓语为状态动词）
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希望满意并采纳,谢谢!‍‍

It is + 一段时间+since.cl It is + 一段时间+for.cl It is + 一段时间+before.cl 以及相关句型的差别? 单选 it is 30 years ____we last met.句型it is ……since 和it is~before 这两个句型怎么区分 it is…… since……句型中is 可用was ,has been替代吗? It was years since i had seen her.此处为什么是had seen ,可否用saw代替.句型不是It+is/was+时段+since+过去时? since和before的区别!It is thirty years since we last met.这句话用before怎么说?since和before的区别到底是什么?这种It is句型什么是用since?什么时候用before? It is 一段时间 since.这句型中is可以换成was或其他什么时态吗?有什么区别. It is/has been…since… It was/will be…before… 这两个句It is/has been…since…It was/will be…before…这两个句型怎么用?要用什么时态? It -------- five years since he left his motherland.这种句型的题,什么时候用It was,什么时候用It is啊?具体一点,举个例子啊..... It's ten years since we last met in Beijing?句型中is能否用has been来替换 it is/was ...that...句型的意思,用法最好再带上it is/was ...that/since/before/when...的用法,谢了! It is five years since he smoked 关于it is ...since的问题我知道it is...since时,since后加动词过去时时,is可以改成has been.那么如果it was...since的时候since后面的动词用什么呢?是had been吗?还是这个句型不对?那另一个是什么句子呢?我 it is ...since it was...before 一定是过去式吗? It is/was +段时间 +连词（since/before）+一般现在时,一般过去It is/was +段时间 +连词（since/before）+一般现在时,一般过去时,或完成时.请哪位懂的讲一下,关于连词的固定句型 英语It is的所有句型是什么 It is + adj + that 是什么句型? it is 句型后面应该跟什么? It is句型同义句转换