你好。已经订正好了。
1 你的句子是时间状语从句，连接词是since.
--------- it is +时间段+ since +句子（谓语动词必须是一般过去时）
2 你的句子是由I l last met you three months ago 变过来的。
典型的现在完成时句型，完成时态+since开始的时间状语，意思“从那时起已经...”
中译：从我上次见到你后已经3个月了
since引导的时间状语从句，从句用一般过去时，主句用现在完成时
It was three months since I met you last time.各位大侠们,帮忙啦...
1 你的句子是时间状语从句，连接词是since.--- it is +时间段+ since +句子（谓语动词必须是一般过去时）2 你的句子是由I l last met you three months ago 变过来的。
假设你是某中学新老师李红,请给你的朋友张华写一封信,告诉他你第一天上...
Dear Zhang Hua,It’s three months since I heard from you last time. Now I want to tell you an impressive story happened on my first lesson.On hearing the bell, students ran into the classroom as quickly as they can. But a boy, Li Ming, whose father died a month ago, ...
It's almost 3 years ___ we met last time . A. until B. before...
1.楼主理解的是对的。一般前面用现在完成时。所以楼主的句子写成;It has been ...也完全正确。但是系动词是很灵活的，有时候就不遵循语法。如：明年我二十岁：i am 20 years old next year.也是能见到的。2.since后根据实际情况可以是时间点，也可以是一般过去时的句子。如：从去年起：since l...
It’s many years since I saw you last time and I ___ you at all...
翻译为：距离我上次看到你已经过去很多年了。我一点都认不出你了。也就是说，现在的说话时已经认出了，也就是刚刚没有认出。D 过去式，表明之前没有认出来，C是现在完成式，表示到现在都还没认出来，所以【D】谢谢，不懂可追问~~~
It's 3 years since I saw him last time.能不能换成it was...
不能 可以这么说,since是完成时的标志,所以,此处只能用 It has been =It's
It's 3 years since I saw him last time. 中的is能否换成has been...
It is +一段时间+since…的句型与It has been +一段时间+since…意思相同。前者是规范说法，后者是口语说法。应注意的是，在这种结构中，since引导的从句绝对不能用否定式的谓语动词来表示否定意义，下面两句都错了：It is a long time since he didn’t study English.It’s two months since ...
It's almost 3 years ___ we met last time . A. until B. before...
It is three years since he has smoked. 两句均意为：他吸烟已有3年了。注意：在这种结构中， since引导的从句绝对不能用否定式的谓语动词来表示否定意义， 试比较：他好久没学汉语了。误：It is a long time since be didn’t study Chinese.正：It’s a long time since he studied Chinese...
It’s ten years ___ we met each other last time. A.before B.since...
after引导的词组所表示的时间是纯系过去，并不延续到说话时，因此要和一般过去时连用。例如：He went home after school.after 也不行 since引导的词组所表示的时间一直延续到说话时为止，因而要与现在完成时连用。例如：He has been there twice since 1982.I have done nothing since six o”clock....
"It's many years since i saw you last.I didn't
这里是对过去情况的虚拟：从句用had+过去分词；主句用would\/could\/may\/might have +过去分词。填空处是从句，用hadn't callded.翻译：---自从上次见你，已经过去很多年了。开始我都没认出你呢。---如果那人没有喊你的名字，我也认不出啊。如果我的回答对您有帮助，请点击下面的“选为满意答案”...
-It’s many years since I saw you last, I ___ you at all.-I woul...
A 考查时态及虚拟语气。前一句，句中过去式，表明之前没有认出来。第二空考查与过去事实相反的虚拟语气，故用had + v-ed。故选A。
