it's...since的用法比如since后跟结束性动词是什么意识,跟延续性动词是什么意思

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it's...since的用法比如since后跟结束性动词是什么意识,跟延续性动词是什么意思
it's...since的用法
比如since后跟结束性动词是什么意识,跟延续性动词是什么意思

it's...since的用法比如since后跟结束性动词是什么意识,跟延续性动词是什么意思
1 就像这个句子：I saw him two weeks ago
== It is two weeks SINCE i saw him
since後面的saw是瞬间动词
== I haven't seen him for two weeks (这里的not seen成了延续动词)
2 He got to Shanghai two days ago (got是瞬间动词)
== He has been in Shanghai FOR two days.(been是延续动词)

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1、如果since 跟的是下时间段，则用延续性动词！
如 I have stayed in that country since 1995. 时间段（1995到现在）要求：谓v.用现在完成时，而且须是延续性动词。
如 They have lived in that house since two years ago.时间段（两年前到现在我一直都住在在那个房子里面）要求：谓v.用现在完成时，而且须是延续性动词。
2、如果since 后面要求跟的是时间点则用终止性动词
如 I have loved her since I met her last time. / Lily has stayed at home since she left school. since引导的从句是过去的一个时间点，故用过去时态，而从句主体表达的是一个时间段（即从从我们上次见面到现在）故用延续性动词，故要求：主句的谓v.用现在完成时，而且须是延续性动词；从句的谓v.用一般过去时，而且须是终止性动词。

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it's...since的用法比如since后跟结束性动词是什么意识,跟延续性动词是什么意思 it is+时间段+since的用法当主句有last该怎么办,和时间段+since的用法一样么?这里有三道题It's a long time since we___(meet)last year.It's a long time since we___(meet)last,isn't it?More than 15 years ___(pass)sin It's years since I enjoyed myself so much.其中since是什么用法? it has been since.用法 it's +时间+since/that/when/before句型用法的差别它们分别有什么条件吗? since后加现在完成时和一般过去时的区别比如It's three years since he has worked there.和It's three years since he worked there.有什么区别 It looks as if从句和“It's 3 years since 从句”两句的的IT的含义和用法?请问下面这两个IT的含义和用法?1 It's 3 years since 从句；2 It look as if从句.如果是形式主语,也不对啊,SINCE和AS IF引导的都不是 It's nothing的用法~ It's taken.的用法 since的用法 since的用法 since 的用法 since的用法是什么? since的各种用法介词 since 的用法? 请问下面这两个IT的含义和用法?1 It's 3 years since 从句；2 It look as if从句.如果是形式主语,也不对啊,SINCE和AS IF引导的都不是主语从句, i think it's been a long time since i've heard anyone is good since在这里是什么用法? It's的用法比如It's up to you.由你决定为什么没有决定这词It's 可以代替哪些词啊