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it since
itissince
用法
答:
Itis
/hasbeen+一段时间+
since
+一般过去时态如:ItisfiveyearssinceIlefthere.我离开这里有五年了.Itwas+一段时间+since+过去完成时 这是固定用法.当since表示"自从"时,不管它是用作介词、连词还是副词,它通常都要与现在完成时(since前)连用。如:Ivewornglassessincemychildhood.我从小就戴眼镜。since...
it is
/
since
的区别
答:
首先我们来看下
it is
、
since
和before的大致意思:it is:词性为短语,it is是由it和is组成的短语,it代表无生命的物体或不明确的主语,is是be动词的第三人称单数形式。since:词性为介词,since是一个基本介词,表示从某个特定时间开始,引导一个时间点、时间段或事件 before:词性为介词,before是一个...
it is
+一段时间+
since
和it is+一段时间+ before有何区别?
答:
1、
it is
+ 一段时间 +
since
表示从这个时间开始到现在...自从...以来,用法上
It
+ ( 现在完成时 ) + 一段时间+ since + ( 一般过去时 )。2、it is + 一段时间 + before表示在这个时间之前,或者大约在这个时间上就会发生某事。用法上It + ( 一般将来时 ) + 一段时间+ before +( 一...
it is
+ 一段时间 +
since
和 it is + 一段时间 + before的区别_百度...
答:
since
是自从的意思 一段时间 +since表示从这个时间开始到现在---自从~以来,用法上It + ( 现在完成时 ) + 一段时间+ since + ( 一般过去时 )例句:1.
It is
/ has been four days since I caught a cold.我感冒已四天了.2.It is / has been two weeks since we met last.自从我们上...
it is
since
句型
答:
It is
since
表示过去某个时间开始,一直持续到现在的一段时间。例如:“It is since last year that I started learning French.”(自从去年开始,我就开始学习法语。)这句话强调从去年到现在一直在进行法语学习。It is since 表示某个时间点或事件是导致当前情况或状态的原因。例如:“It is ...
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...
答:
is 其中要求
since
引导的从句必须采用一般过去时,而主句是一般现在时或现在完成时
it
was其中since引导的从句必须采用若主句是一般过去式,从句也是一般过去式时:① 若主句是肯定句,翻译成“过了多长时间之后才……”例:
It
was long before they found their son.过了很久他们才找到他们的儿子。② 若...
it is
一段时间
since
从句?
答:
通常
since
时间状语用现在完成时比较多,但
It is
three years since I came here. 是一种习惯上表示现状(我来这里已经三年了)
since
的用法
答:
How long ___ we have the mid-term examinations?a.is
it
since
b. has it been since c.will it be since d. is it when 解析:B。has it been since since的用法主要有两点:一是表示“自从……以来”,二是表示“既然”之意。但如果只了解词的含义,而不了解其用法,在使用时就会造成...
it
's...
since
的用法
答:
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. (...
It
’s……
since
…… 用的时态主句从句的分开讲
答:
I have been here
since
1989.2) since +一段时间+ ago I have been here since five months ago.3) since +从句 Great changes have taken place since you left.Considerable time has elapsed since we have been here.4)
It is
+一段时间+ since从句 It is two years since I became ...
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